A Survey of Learned Indexes for the Multi-dimensional Space.

Walid G. Aref Purdue University, West Lafayette, USA http://www.cs.purdue.edu/people/faculty/aref/ https://scholar.google.com/citations?user=vX45evgAAAAJ https://dl.acm.org/profile/81100086855 https://orcid.org/0000-0001-8169-7775 https://www.wikidata.org/entity/Q130827628

Abdullah Al-Mamun 0003 Hao Wu Qiyang He Jianguo Wang 0001 Walid G. Aref A Survey of Learned Indexes for the Multi-dimensional Space. 96:1-96:37 2026 March 58 ACM Comput. Surv. 4 https://doi.org/10.1145/3768575 db/journals/csur/csur58.html#AlMamunWHWA26 streams/journals/csur

Yeasir Rayhan Walid G. Aref Gen-DBA: Generative Database Agents (Towards a Move 37 for Databases). 2026 January abs/2601.16409 CoRR https://doi.org/10.48550/arXiv.2601.16409 db/journals/corr/corr2601.html#abs-2601-16409 streams/journals/corr

Udesh Kumarasinghe Tyler Liu Chunwei Liu Walid G. Aref iPDB - Optimizing SQL Queries with ML and LLM Predicates. 2026 January abs/2601.16432 CoRR https://doi.org/10.48550/arXiv.2601.16432 db/journals/corr/corr2601.html#abs-2601-16432 streams/journals/corr

Gautam Choudhary Libin Zhou Yeasir Rayhan Walid G. Aref An Empirical Survey and Benchmark of Learned Distance Indexes for Road Networks. 2026 February abs/2602.04068 CoRR https://doi.org/10.48550/arXiv.2602.04068 db/journals/corr/corr2602.html#abs-2602-04068 streams/journals/corr

Yeasir Rayhan Walid G. Aref Virtual-Memory Assisted Buffer Management In Tiered Memory. 2026 March abs/2603.03271 CoRR https://doi.org/10.48550/arXiv.2603.03271 db/journals/corr/corr2603.html#abs-2603-03271 streams/journals/corr

Lu Xing Walid G. Aref Towards a B+-tree with Fluctuation-Free Performance. 2026 March abs/2603.04785 CoRR https://doi.org/10.48550/arXiv.2603.04785 db/journals/corr/corr2603.html#abs-2603-04785 streams/journals/corr

Lu Xing Venkata Sai Pavan Kumar Vadrevu Walid G. Aref The Ubiquitous Skiplist: A Survey of What Cannot be Skipped About the Skiplist and its Applications in Data Systems. 297:1-297:37 2025 November 57 ACM Comput. Surv. 11 https://doi.org/10.1145/3736754 db/journals/csur/csur57.html#XingVA25 streams/journals/csur

Libin Zhou Lu Xing Yeasir Rayhan Walid G. Aref GTX: A Write-Optimized Latch-free Graph Data System with Transactional Support. 168:1-168:27 2025 June 3 Proc. ACM Manag. Data 3 https://doi.org/10.1145/3725305 db/journals/pacmmod/pacmmod3.html#ZhouXRA25 streams/journals/pacmmod

Ruihong Wang Jianguo Wang 0001 Walid G. Aref Cache Coherence Over Disaggregated Memory. 2978-2991 2025 May 18 Proc. VLDB Endow. 9 https://www.vldb.org/pvldb/vol18/p2978-wang.pdf https://doi.org/10.14778/3746405.3746422 db/journals/pvldb/pvldb18.html#WangWA25 streams/journals/pvldb

Walid G. Aref Special Issue on the Best Papers from the 2022 ACM SIGSPATIAL Conference. 14:1-14:2 2025 December 11 ACM Trans. Spatial Algorithms Syst. 4 https://doi.org/10.1145/3756851 db/journals/tsas/tsas11.html#Aref25 streams/journals/tsas

Jaewoo Shin 0001 Libin Zhou Jianguo Wang 0001 Walid G. Aref An update-intensive LSM-based R-tree index. 7 2025 January 34 VLDB J. 1 https://doi.org/10.1007/s00778-024-00876-7 db/journals/vldb/vldb34.html#ShinZWA25 streams/journals/vldb

Abdullah Al-Mamun 0003 Ch. Md. Rakin Haider Walid G. Aref Query Processing Tradeoffs over an ML-Enhanced R-tree. 174-184 2025 GeoAI@SIGSPATIAL https://doi.org/10.1145/3764912.3770834 conf/geoai/2025 db/conf/geoai/geoai2025.html#0003HA25 Muhammad Aamir Cheema Muhammad Ali Babar 0001 Mohammed Eunus Ali Mohammad Goudarzi Walid G. Aref A Future in Motion: Reimagining Public Transport with Diverse Autonomous Vehicles. 769-773 2025 SIGSPATIAL/GIS https://doi.org/10.1145/3748636.3760458 conf/gis/2025 db/conf/gis/gis2025.html#Cheema0AGA25 El Kindi Rezig Walid G. Aref Lory: Location-aware Data Discovery from Data Lakes. 795-798 2025 SIGSPATIAL/GIS https://doi.org/10.1145/3748636.3760464 conf/gis/2025 db/conf/gis/gis2025.html#RezigA25 Abdullah Al-Mamun 0003 Jianguo Wang 0001 Walid G. Aref Learned Indexes From the One-dimensional to the Multi-dimensional Spaces: Challenges, Techniques, and Opportunities. 788-796 2025 SIGMOD Conference Companion https://doi.org/10.1145/3722212.3725639 conf/sigmod/2025c db/conf/sigmod/sigmod2025c.html#00030A25 Lu Xing Ruihong Wang Walid G. Aref An Adaptive Index for Oscillating Write-Heavy and Read-Heavy Workloads. 3:1-3:12 2025 SSDBM https://doi.org/10.1145/3733723.3733732 conf/ssdbm/2025 db/conf/ssdbm/ssdbm2025.html#XingWA25

Abdullah Al-Mamun 0003 Ch. Md. Rakin Haider Jianguo Wang 0001 Walid G. Aref Tradeoffs in Processing Queries and Supporting Updates over an ML-Enhanced R-tree. 2025 February abs/2502.09937 CoRR https://doi.org/10.48550/arXiv.2502.09937 db/journals/corr/corr2502.html#abs-2502-09937 streams/journals/corr

Yeasir Rayhan Walid G. Aref Revisiting Page Migration for Main-Memory Database Systems. 2025 March abs/2503.17685 CoRR https://doi.org/10.48550/arXiv.2503.17685 db/journals/corr/corr2503.html#abs-2503-17685 streams/journals/corr

Yeasir Rayhan Walid G. Aref Exploring Next Token Prediction For Optimizing Databases. 2025 March abs/2503.19619 CoRR https://doi.org/10.48550/arXiv.2503.19619 db/journals/corr/corr2503.html#abs-2503-19619 streams/journals/corr

Jiangneng Li Yuang Liu Zheng Wang 0046 Gao Cong Cheng Long 0001 Walid G. Aref Han Mao Kiah Bin Cui 0001 BMTree: Designing, Learning, and Updating Piecewise Space-Filling Curves for Multi-Dimensional Data Indexing. 2025 May abs/2505.01697 CoRR https://doi.org/10.48550/arXiv.2505.01697 db/journals/corr/corr2505.html#abs-2505-01697 streams/journals/corr

Walid G. Aref Leila De Floriani Mohamed F. Mokbel Cyrus Shahabi Introduction to the Special Issue on Vision Papers. 9 2024 June 10 ACM Trans. Spatial Algorithms Syst. 2 https://doi.org/10.1145/3674145 https://www.wikidata.org/entity/Q130827630 db/journals/tsas/tsas10.html#ArefFMS24 streams/journals/tsas

Mohamed F. Mokbel Mahmoud Attia Sakr Li Xiong 0001 Andreas Züfle Jussara M. Almeida Taylor Anderson 0001 Walid G. Aref Gennady L. Andrienko Natalia V. Andrienko Yang Cao 0011 Sanjay Chawla Reynold Cheng Panos K. Chrysanthis Xiqi Fei Gabriel Ghinita Anita Graser Dimitrios Gunopulos Christian S. Jensen Joon-Seok Kim 0001 Kyoung-Sook Kim 0001 Peer Kröger John Krumm Johannes Lauer Amr Magdy 0001 Mario A. Nascimento Siva Ravada Matthias Renz Dimitris Sacharidis Flora D. Salim Mohamed Sarwat Maxime Schoemans Cyrus Shahabi Bettina Speckmann Egemen Tanin Xu Teng Yannis Theodoridis Kristian Torp Goce Trajcevski Marc J. van Kreveld Carola Wenk Martin Werner 0001 Raymond Chi-Wing Wong Song Wu Jianqiu Xu Moustafa Youssef 0001 Demetris Zeinalipour Mengxuan Zhang 0001 Esteban Zimányi Mobility Data Science: Perspectives and Challenges. 10 2024 June 10 ACM Trans. Spatial Algorithms Syst. 2 https://doi.org/10.1145/3652158 https://www.wikidata.org/entity/Q125986390 db/journals/tsas/tsas10.html#MokbelSXZAAAAACCCCFGGGJ24 streams/journals/tsas

Ruihong Wang Chuqing Gao Jianguo Wang 0001 Prishita Kadam M. Tamer Özsu Walid G. Aref Optimizing LSM-based indexes for disaggregated memory. 1813-1836 2024 November 33 VLDB J. 6 https://doi.org/10.1007/s00778-024-00863-y db/journals/vldb/vldb33.html#WangGWKOA24 streams/journals/vldb

Maxime Schoemans Walid G. Aref Esteban Zimányi Mahmoud Attia Sakr Multi-Entry Generalized Search Trees for Indexing Trajectories. 421-431 2024 SIGSPATIAL/GIS https://doi.org/10.1145/3678717.3691320 conf/gis/2024 db/conf/gis/gis2024.html#SchoemansAZS24 Walid G. Aref On Native Location-Optimized Data Systems. 5675-5676 2024 ICDE https://doi.org/10.1109/ICDE60146.2024.00469 conf/icde/2024 db/conf/icde/icde2024.html#Aref24

Venkata Sai Pavan Kumar Vadrevu Lu Xing Walid G. Aref What Cannot be Skipped About the Skiplist: A Survey of Skiplists and Their Applications in Big Data Systems. 2024 abs/2403.04582 CoRR https://doi.org/10.48550/arXiv.2403.04582 db/journals/corr/corr2403.html#abs-2403-04582

Abdullah Al-Mamun 0003 Hao Wu Qiyang He Jianguo Wang 0001 Walid G. Aref A Survey of Learned Indexes for the Multi-dimensional Space. 2024 abs/2403.06456 CoRR https://doi.org/10.48550/arXiv.2403.06456 db/journals/corr/corr2403.html#abs-2403-06456

Libin Zhou Yeasir Rayhan Lu Xing Walid G. Aref GTX: A Write-Optimized Latch-free Graph Data System with Transactional Support. 2024 abs/2405.01418 CoRR https://doi.org/10.48550/arXiv.2405.01418 db/journals/corr/corr2405.html#abs-2405-01418

Libin Zhou Walid G. Aref GTX: A Transactional Graph Data System For HTAP Workloads. 2024 abs/2405.01448 CoRR https://doi.org/10.48550/arXiv.2405.01448 db/journals/corr/corr2405.html#abs-2405-01448

Maxime Schoemans Walid G. Aref Esteban Zimányi Mahmoud Attia Sakr Multi-Entry Generalized Search Trees for Indexing Trajectories. 2024 abs/2406.05327 CoRR https://doi.org/10.48550/arXiv.2406.05327 db/journals/corr/corr2406.html#abs-2406-05327

Lu Xing Walid G. Aref The AHA-Tree: An Adaptive Index for HTAP Workloads. 2024 abs/2406.08746 CoRR https://doi.org/10.48550/arXiv.2406.08746 db/journals/corr/corr2406.html#abs-2406-08746

Lu Xing Walid G. Aref Investigation of Adaptive Hotspot-Aware Indexes for Oscillating Write-Heavy and Read-Heavy Workloads - An Experimental Study. 2024 abs/2406.09372 CoRR https://doi.org/10.48550/arXiv.2406.09372 db/journals/corr/corr2406.html#abs-2406-09372

Ruihong Wang Jianguo Wang 0001 Walid G. Aref SELCC: Coherent Caching over Compute-Limited Disaggregated Memory. 2024 abs/2409.02088 CoRR https://doi.org/10.48550/arXiv.2409.02088 db/journals/corr/corr2409.html#abs-2409-02088 streams/journals/corr

Yeasir Rayhan Walid G. Aref P-MOSS: Learned Scheduling For Indexes Over NUMA Servers Using Low-Level Hardware Statistics. 2024 abs/2411.02933 CoRR https://doi.org/10.48550/arXiv.2411.02933 db/journals/corr/corr2411.html#abs-2411-02933 streams/journals/corr

Walid G. Aref Editorial: Special Issue on the Best Papers from the 2020 ACM SIGSPATIAL Conference. 1:1-1:2 2023 March 9 ACM Trans. Spatial Algorithms Syst. 1 https://doi.org/10.1145/3573198 db/journals/tsas/tsas9.html#Aref23

Walid G. Aref Editorial: Special Issue on the Best Papers from the 2021 ACM SIGSPATIAL Conference. 23:1-23:2 2023 December 9 ACM Trans. Spatial Algorithms Syst. 4 https://doi.org/10.1145/3632619 db/journals/tsas/tsas9.html#Aref23a

Zhida Chen Gao Cong Walid G. Aref STAR: A Cache-based Stream Warehouse System for Spatial Data. 28:1-28:27 2023 December 9 ACM Trans. Spatial Algorithms Syst. 4 https://doi.org/10.1145/3605944 https://www.wikidata.org/entity/Q131127270 db/journals/tsas/tsas9.html#ChenCA23

Yeasir Rayhan Walid G. Aref SIMD-ified R-tree Query Processing and Optimization. 37:1-37:10 2023 SIGSPATIAL/GIS https://doi.org/10.1145/3589132.3625610 conf/gis/2023 db/conf/gis/gis2023.html#RayhanA23 Ruihong Wang Jianguo Wang 0001 Prishita Kadam M. Tamer Özsu Walid G. Aref dLSM: An LSM-Based Index for Memory Disaggregation. 2835-2849 2023 ICDE https://doi.org/10.1109/ICDE55515.2023.00217 conf/icde/2023 db/conf/icde/icde2023.html#Wang0KOA23

Venkata Sai Pavan Kumar Vadrevu Lu Xing Walid G. Aref Tutorial: The Ubiquitous Skiplist, its Variants, and Applications in Modern Big Data Systems. 2023 abs/2304.09983 CoRR https://doi.org/10.48550/arXiv.2304.09983 db/journals/corr/corr2304.html#abs-2304-09983

Jaewoo Shin 0001 Jianguo Wang 0001 Walid G. Aref An Update-intensive LSM-based R-tree Index. 2023 abs/2305.01087 CoRR https://doi.org/10.48550/arXiv.2305.01087 db/journals/corr/corr2305.html#abs-2305-01087

Mohamed F. Mokbel Mahmoud Attia Sakr Li Xiong 0001 Andreas Züfle Jussara M. Almeida Taylor Anderson 0001 Walid G. Aref Gennady L. Andrienko Natalia V. Andrienko Yang Cao 0011 Sanjay Chawla Reynold Cheng Panos K. Chrysanthis Xiqi Fei Gabriel Ghinita Anita Graser Dimitrios Gunopulos Christian S. Jensen Joon-Seok Kim 0001 Kyoung-Sook Kim 0001 Peer Kröger John Krumm Johannes Lauer Amr Magdy 0001 Mario A. Nascimento Siva Ravada Matthias Renz Dimitris Sacharidis Cyrus Shahabi Flora D. Salim Mohamed Sarwat Maxime Schoemans Bettina Speckmann Egemen Tanin Xu Teng Yannis Theodoridis Kristian Torp Goce Trajcevski Marc J. van Kreveld Carola Wenk Martin Werner 0001 Raymond Chi-Wing Wong Song Wu Jianqiu Xu Moustafa Youssef 0001 Demetris Zeinalipour Mengxuan Zhang 0001 Esteban Zimányi Towards Mobility Data Science (Vision Paper). 2023 abs/2307.05717 CoRR https://doi.org/10.48550/arXiv.2307.05717 db/journals/corr/corr2307.html#abs-2307-05717

Yeasir Rayhan Walid G. Aref SIMD-ified R-tree Query Processing and Optimization. 2023 abs/2309.16913 CoRR https://doi.org/10.48550/arXiv.2309.16913 db/journals/corr/corr2309.html#abs-2309-16913

Ruihong Wang Jianguo Wang 0001 Stratos Idreos M. Tamer Özsu Walid G. Aref The Case for Distributed Shared-Memory Databases with RDMA-Enabled Memory Disaggregation. 15-22 2022 16 Proc. VLDB Endow. 1 https://www.vldb.org/pvldb/vol16/p15-wang.pdf https://doi.org/10.14778/3561261.3561263 https://www.wikidata.org/entity/Q130858838 db/journals/pvldb/pvldb16.html#Wang0IOA22

Anas Daghistani Mosab Khayat Muhamad Felemban Walid G. Aref Arif Ghafoor Guard: Attack-Resilient Adaptive Load Balancing in Distributed Streaming Systems. 4172-4186 2022 19 IEEE Trans. Dependable Secur. Comput. 6 https://doi.org/10.1109/TDSC.2021.3123071 db/journals/tdsc/tdsc19.html#DaghistaniKFAG22

Abdullah Al-Mamun 0003 Ch. Md. Rakin Haider Jianguo Wang 0001 Walid G. Aref The "AI + R" - tree: An Instance-optimized R - tree. 9-18 2022 MDM https://doi.org/10.1109/MDM55031.2022.00023 conf/mdm/2022 db/conf/mdm/mdm2022.html#Al-MamunHWA22

Walid G. Aref Yeasir Rayhan Libin Zhou Anas Daghistani ILX: Intelligent "Location+X" Data Systems (Vision Paper). 2022 abs/2206.09520 CoRR https://doi.org/10.48550/arXiv.2206.09520 db/journals/corr/corr2206.html#abs-2206-09520

Abdullah Al-Mamun 0003 Ch. Md. Rakin Haider Jianguo Wang 0001 Walid G. Aref The "AI+R"-tree: An Instance-optimized R-tree. 2022 abs/2207.00550 CoRR https://doi.org/10.48550/arXiv.2207.00550 db/journals/corr/corr2207.html#abs-2207-00550

Ruihong Wang Jianguo Wang 0001 Stratos Idreos M. Tamer Özsu Walid G. Aref The Case for Distributed Shared-Memory Databases with RDMA-Enabled Memory Disaggregation. 2022 abs/2207.03027 CoRR https://doi.org/10.48550/arXiv.2207.03027 db/journals/corr/corr2207.html#abs-2207-03027

Mohamed F. Mokbel Mahmoud Attia Sakr Li Xiong 0001 Andreas Züfle Jussara M. Almeida Taylor Anderson 0001 Walid G. Aref Gennady L. Andrienko Natalia V. Andrienko Yang Cao 0011 Sanjay Chawla Reynold Cheng Panos K. Chrysanthis Xiqi Fei Gabriel Ghinita Anita Graser Dimitrios Gunopulos Christian S. Jensen Joon-Seok Kim 0001 Kyoung-Sook Kim 0001 Peer Kröger John Krumm Johannes Lauer Amr Magdy 0001 Mario A. Nascimento Siva Ravada Matthias Renz Dimitris Sacharidis Cyrus Shahabi Flora D. Salim Mohamed Sarwat Maxime Schoemans Bettina Speckmann Egemen Tanin Yannis Theodoridis Kristian Torp Goce Trajcevski Marc J. van Kreveld Carola Wenk Martin Werner 0001 Raymond Chi-Wing Wong Song Wu Jianqiu Xu Moustafa Youssef 0001 Demetris Zeinalipour Mengxuan Zhang 0001 Esteban Zimányi Mobility Data Science (Dagstuhl Seminar 22021). 1-34 2022 12 Dagstuhl Reports 1 https://doi.org/10.4230/DagRep.12.1.1 db/journals/dagstuhl-reports/dagstuhl-reports12.html#MokbelSXZAAAAAC22

Sherif Sakr Angela Bonifati Hannes Voigt Alexandru Iosup Khaled Ammar Renzo Angles Walid G. Aref Marcelo Arenas Maciej Besta Peter A. Boncz Khuzaima Daudjee Emanuele Della Valle Stefania Dumbrava Olaf Hartig Bernhard Haslhofer Tim Hegeman Jan Hidders Katja Hose Adriana Iamnitchi Vasiliki Kalavri Hugo Kapp Wim Martens M. Tamer Özsu Eric Peukert Stefan Plantikow Mohamed Ragab 0001 Matei Ripeanu Semih Salihoglu Christian Schulz 0003 Petra Selmer Juan F. Sequeda Joshua Shinavier Gábor Szárnyas Riccardo Tommasini 0001 Antonino Tumeo Alexandru Uta Ana Lucia Varbanescu Hsiang-Yun Wu Nikolay Yakovets Da Yan 0001 Eiko Yoneki The future is big graphs: a community view on graph processing systems. 62-71 2021 64 Commun. ACM 9 https://doi.org/10.1145/3434642 https://www.wikidata.org/entity/Q126073573 db/journals/cacm/cacm64.html#SakrBVIAAAABBDV21

El Kindi Rezig Mourad Ouzzani Walid G. Aref Ahmed K. Elmagarmid Ahmed R. Mahmood Michael Stonebraker Horizon: Scalable Dependency-driven Data Cleaning. 2546-2554 2021 14 Proc. VLDB Endow. 11 http://www.vldb.org/pvldb/vol14/p2546-rezig.pdf https://doi.org/10.14778/3476249.3476301 db/journals/pvldb/pvldb14.html#RezigOAEMS21

Lu Xing Eric Lee Tong An Bo-Cheng Chu Ahmed Mahmood Ahmed M. Aly Jianguo Wang 0001 Walid G. Aref An Experimental Evaluation and Investigation of Waves of Misery in R-trees. 478-490 2021 15 Proc. VLDB Endow. 3 http://www.vldb.org/pvldb/vol15/p478-aref.pdf https://doi.org/10.14778/3494124.3494132 https://www.wikidata.org/entity/Q130903312 db/journals/pvldb/pvldb15.html#XingLACMAWA21

Anas Daghistani Walid G. Aref Arif Ghafoor Ahmed R. Mahmood SWARM: Adaptive Load Balancing in Distributed Streaming Systems for Big Spatial Data. 14:1-14:43 2021 7 ACM Trans. Spatial Algorithms Syst. 3 https://doi.org/10.1145/3460013 https://www.wikidata.org/entity/Q130859901 db/journals/tsas/tsas7.html#DaghistaniAGM21

Walid G. Aref Introduction to the Special Section on the Best Papers from the 2019 ACM SIGSPATIAL Conference. 16:1-16:2 2021 7 ACM Trans. Spatial Algorithms Syst. 4 https://doi.org/10.1145/3485049 db/journals/tsas/tsas7.html#Aref21

Zhida Chen Gao Cong Walid G. Aref STAR: A Cache-based Distributed Warehouse System for Spatial Data Streams. 606-615 2021 SIGSPATIAL/GIS https://doi.org/10.1145/3474717.3484265 https://www.wikidata.org/entity/Q131132739 conf/gis/2021 db/conf/gis/gis2021.html#ChenCA21 Jaewoo Shin 0001 Jianguo Wang 0001 Walid G. Aref The LSM RUM-Tree: A Log Structured Merge R-Tree for Update-intensive Spatial Workloads. 2285-2290 2021 ICDE https://doi.org/10.1109/ICDE51399.2021.00238 conf/icde/2021 db/conf/icde/icde2021.html#Shin0A21

Yongyang Yu Mingjie Tang Walid G. Aref Scalable Relational Query Processing on Big Matrix Data. 2021 abs/2110.01767 CoRR https://arxiv.org/abs/2110.01767 db/journals/corr/corr2110.html#abs-2110-01767

Lu Xing Eric Lee Tong An Bo-Cheng Chu Ahmed Mahmood Ahmed M. Aly Jianguo Wang 0001 Walid G. Aref An Experimental Evaluation and Investigation of Waves of Misery in R-trees. 2021 abs/2112.13174 CoRR https://arxiv.org/abs/2112.13174 db/journals/corr/corr2112.html#abs-2112-13174

Mingjie Tang Yongyang Yu Ahmed R. Mahmood Qutaibah M. Malluhi Mourad Ouzzani Walid G. Aref LocationSpark: In-memory Distributed Spatial Query Processing and Optimization. 30 2020 3 Frontiers Big Data https://doi.org/10.3389/fdata.2020.00030 https://www.wikidata.org/entity/Q112686203 db/journals/fdata/fdata3.html#TangYMMOA20

Abdulaziz Almaslukh Amr Magdy 0001 Ahmed M. Aly Mohamed F. Mokbel Sameh Elnikety Yuxiong He Suman Nath Walid G. Aref Local trend discovery on real-time microblogs with uncertain locations in tight memory environments. 301-337 2020 24 GeoInformatica 2 https://doi.org/10.1007/s10707-019-00380-z https://www.wikidata.org/entity/Q127292480 db/journals/geoinformatica/geoinformatica24.html#AlmaslukhMAMEHN20

Yue Chen Zhida Chen Gao Cong Ahmed R. Mahmood Walid G. Aref SSTD: A Distributed System on Streaming Spatio-Textual Data. 2284-2296 2020 13 Proc. VLDB Endow. 11 http://www.vldb.org/pvldb/vol13/p2284-chen.pdf db/journals/pvldb/pvldb13.html#ChenCCMA20

Abdullah Al-Mamun 0003 Hao Wu Walid G. Aref A Tutorial on Learned Multi-dimensional Indexes. 1-4 2020 SIGSPATIAL/GIS https://doi.org/10.1145/3397536.3426358 conf/gis/2020 db/conf/gis/gis2020.html#Al-MamunWA20 Anas Daghistani Walid G. Aref Arif Ghafoor TrioStat: Online Workload Estimation in Distributed Spatial Data Streaming Systems. 78-86 2020 SIGSPATIAL/GIS https://doi.org/10.1145/3397536.3422220 conf/gis/2020 db/conf/gis/gis2020.html#DaghistaniAG20 Guizhen Wang Jingjing Guo Mingjie Tang José Florencio de Queiroz Neto Calvin Yau Anas Daghistani Morteza Karimzadeh Walid G. Aref David S. Ebert STULL: Unbiased Online Sampling for Visual Exploration of Large Spatiotemporal Data. 72-83 2020 IEEE VAST@IEEE VIS https://doi.org/10.1109/VAST50239.2020.00012 conf/ieeevast/2020 db/conf/ieeevast/ieeevast2020.html#WangGTNYDKAE20 Ahmed S. Abdelhamid Walid G. Aref PartLy: learning data partitioning for distributed data stream processing. 6:1-6:4 2020 aiDM@SIGMOD https://doi.org/10.1145/3401071.3401660 conf/sigmod/2020aidm db/conf/sigmod/aidm2020.html#AbdelhamidA20 Ahmed S. Abdelhamid Ahmed R. Mahmood Anas Daghistani Walid G. Aref Prompt: Dynamic Data-Partitioning for Distributed Micro-batch Stream Processing Systems. 2455-2469 2020 SIGMOD Conference https://doi.org/10.1145/3318464.3389713 https://www.wikidata.org/entity/Q130884882 conf/sigmod/2020 db/conf/sigmod/sigmod2020.html#AbdelhamidMDA20 Zhida Chen Gao Cong Walid G. Aref STAR: A Distributed Stream Warehouse System for Spatial Data. 2761-2764 2020 SIGMOD Conference https://doi.org/10.1145/3318464.3384699 https://www.wikidata.org/entity/Q130880243 conf/sigmod/2020 db/conf/sigmod/sigmod2020.html#ChenCA20 Serkan Uzunbaz Walid G. Aref Shared Execution Techniques for Business Data Analytics over Big Data Streams. 25:1-25:4 2020 SSDBM https://doi.org/10.1145/3400903.3400932 conf/ssdbm/2020 db/conf/ssdbm/ssdbm2020.html#UzunbazA20

Anas Daghistani Walid G. Aref Arif Ghafoor Ahmed R. Mahmood SWARM: Adaptive Load Balancing in Distributed Streaming Systems for Big Spatial Data. 2020 abs/2002.11862 CoRR https://arxiv.org/abs/2002.11862 db/journals/corr/corr2002.html#abs-2002-11862

Guizhen Wang Jingjing Guo Mingjie Tang José Florencio de Queiroz Neto Calvin Yau Anas Daghistani Morteza Karimzadeh Walid G. Aref David S. Ebert STULL: Unbiased Online Sampling for Visual Exploration of Large Spatiotemporal Data. 2020 abs/2008.13028 CoRR https://arxiv.org/abs/2008.13028 db/journals/corr/corr2008.html#abs-2008-13028

Sherif Sakr Angela Bonifati Hannes Voigt Alexandru Iosup Khaled Ammar Renzo Angles Walid G. Aref Marcelo Arenas Maciej Besta Peter A. Boncz Khuzaima Daudjee Emanuele Della Valle Stefania Dumbrava Olaf Hartig Bernhard Haslhofer Tim Hegeman Jan Hidders Katja Hose Adriana Iamnitchi Vasiliki Kalavri Hugo Kapp Wim Martens M. Tamer Özsu Eric Peukert Stefan Plantikow Mohamed Ragab 0001 Matei Ripeanu Semih Salihoglu Christian Schulz 0003 Petra Selmer Juan F. Sequeda Joshua Shinavier Gábor Szárnyas Riccardo Tommasini 0001 Antonino Tumeo Alexandru Uta Ana Lucia Varbanescu Hsiang-Yun Wu Nikolay Yakovets Da Yan 0001 Eiko Yoneki The Future is Big Graphs! A Community View on Graph Processing Systems. 2020 abs/2012.06171 CoRR https://arxiv.org/abs/2012.06171 db/journals/corr/corr2012.html#abs-2012-06171

Ahmed R. Mahmood Walid G. Aref Scalable Processing of Spatial-Keyword Queries Morgan & Claypool Publishers 2019 Synthesis Lectures on Data Management 978-3-031-00739-2 978-3-031-01867-1 https://doi.org/10.2200/S00892ED1V01Y201901DTM056 https://doi.org/10.1007/978-3-031-01867-1 https://www.wikidata.org/entity/Q128428116

Ahmed R. Mahmood Sri Punni Walid G. Aref Spatio-temporal access methods: a survey (2010 - 2017). 1-36 2019 23 GeoInformatica 1 https://doi.org/10.1007/s10707-018-0329-2 https://www.wikidata.org/entity/Q129116633 db/journals/geoinformatica/geoinformatica23.html#MahmoodPA19

Muhammad Umer Arshad Muhamad Felemban Zahid Pervaiz Arif Ghafoor Walid G. Aref A Privacy Mechanism for Access Controlled Graph Data. 819-832 2019 16 IEEE Trans. Dependable Secur. Comput. 5 https://doi.org/10.1109/TDSC.2017.2714660 db/journals/tdsc/tdsc16.html#ArshadFPGA19

Walid G. Aref Introduction to the Special Issue on the Best Papers from the 2017 ACM SIGSPATIAL Conference. 1:1-1:2 2019 5 ACM Trans. Spatial Algorithms Syst. 1 https://doi.org/10.1145/3325134 https://www.wikidata.org/entity/Q127753086 db/journals/tsas/tsas5.html#Aref19

Walid G. Aref Editorial: Special Issue on the Best Papers from the 2018 ACM SIGSPATIAL Conference. 21:1-21:2 2019 5 ACM Trans. Spatial Algorithms Syst. 4 https://doi.org/10.1145/3368439 db/journals/tsas/tsas5.html#Aref19a

Jaewoo Shin 0001 Ahmed R. Mahmood Walid G. Aref An Investigation of Grid-enabled Tree Indexes for Spatial Query Processing. 169-178 2019 SIGSPATIAL/GIS https://doi.org/10.1145/3347146.3359384 conf/gis/2019 db/conf/gis/gis2019.html#ShinMA19 Amr Ebaid Saravanan Thirumuruganathan Walid G. Aref Ahmed K. Elmagarmid Mourad Ouzzani EXPLAINER: Entity Resolution Explanations. 2000-2003 2019 ICDE https://doi.org/10.1109/ICDE.2019.00224 conf/icde/2019 db/conf/icde/icde2019.html#EbaidTAEO19 Mingjie Tang Yongyang Yu Walid G. Aref Qutaibah M. Malluhi Mourad Ouzzani Efficient Parallel Skyline Query Processing for High-Dimensional Data. 2113-2114 2019 ICDE https://doi.org/10.1109/ICDE.2019.00251 conf/icde/2019 db/conf/icde/icde2019.html#TangYAMO19 El Kindi Rezig Mourad Ouzzani Ahmed K. Elmagarmid Walid G. Aref Michael Stonebraker Towards an End-to-End Human-Centric Data Cleaning Framework. 1:1-1:7 2019 HILDA@SIGMOD https://doi.org/10.1145/3328519.3329133 conf/sigmod/2019hilda db/conf/sigmod/hilda2019.html#RezigOEAS19 Walid G. Aref Michela Bertolotto Panagiotis Bouros Christian S. Jensen Ahmed R. Mahmood Kjetil Nørvåg Dimitris Sacharidis Mohamed Sarwat Proceedings of the 16th International Symposium on Spatial and Temporal Databases, SSTD 2019, Vienna, Austria, August 19-21, 2019. ACM SSTD 2019 978-1-4503-6280-1 https://doi.org/10.1145/3340964 db/conf/ssd/sstd2019.html Ahmed R. Mahmood Walid G. Aref Streaming Big Spatial Data. 2019 Encyclopedia of Big Data Technologies https://doi.org/10.1007/978-3-319-63962-8_70-1 reference/bdt/2019 db/reference/bdt/1.html#MahmoodA19

Mingjie Tang Yongyang Yu Walid G. Aref Ahmed R. Mahmood Qutaibah M. Malluhi Mourad Ouzzani LocationSpark: In-memory Distributed Spatial Query Processing and Optimization. 2019 abs/1907.03736 CoRR http://arxiv.org/abs/1907.03736 db/journals/corr/corr1907.html#abs-1907-03736

Khaleel Mershad 0001 Qutaibah M. Malluhi Mourad Ouzzani MingJie Tang Michael Gribskov Walid G. Aref AUDIT: approving and tracking updates with dependencies in collaborative databases. 81-119 2018 36 Distributed Parallel Databases 1 https://doi.org/10.1007/s10619-017-7208-y db/journals/dpd/dpd36.html#MershadMOTGA18

Khaleel Mershad 0001 Qutaibah M. Malluhi Mourad Ouzzani MingJie Tang Michael Gribskov Walid G. Aref Deo Prakash COACT: a query interface language for collaborative databases. 121-151 2018 36 Distributed Parallel Databases 1 https://doi.org/10.1007/s10619-017-7213-1 https://www.wikidata.org/entity/Q125941064 db/journals/dpd/dpd36.html#MershadMOTGAP18

MingJie Tang Yongyang Yu Walid G. Aref Qutaibah M. Malluhi Mourad Ouzzani Efficient Parallel Skyline Query Processing for High-Dimensional Data. 1838-1851 2018 30 IEEE Trans. Knowl. Data Eng. 10 https://doi.org/10.1109/TKDE.2018.2809598 http://doi.ieeecomputersociety.org/10.1109/TKDE.2018.2809598 db/journals/tkde/tkde30.html#TangYAMO18

Ahmed R. Mahmood Ahmed M. Aly Tatiana Kuznetsova Saleh M. Basalamah Walid G. Aref Disk-Based Indexing of Recent Trajectories. 7:1-7:27 2018 4 ACM Trans. Spatial Algorithms Syst. 3 https://doi.org/10.1145/3234941 https://www.wikidata.org/entity/Q129253645 db/journals/tsas/tsas4.html#MahmoodAKBA18

Romila Pradhan Walid G. Aref Sunil Prabhakar 0001 Leveraging Data Relationships to Resolve Conflicts from Disparate Data Sources. 99-115 2018 DEXA (2) https://doi.org/10.1007/978-3-319-98812-2_7 conf/dexa/2018-2 db/conf/dexa/dexa2018-2.html#PradhanAP18 Mohamed S. Hassan 0002 Tatiana Kuznetsova Hyun Chai Jeong Walid G. Aref Mohammad Sadoghi Extending In-Memory Relational Database Engines with Native Graph Support. 25-36 2018 EDBT https://doi.org/10.5441/002/edbt.2018.04 conf/edbt/2018 db/conf/edbt/edbt2018.html#HassanKJAS18 Ahmed R. Mahmood Anas Daghistani Ahmed M. Aly MingJie Tang Saleh M. Basalamah Sunil Prabhakar 0001 Walid G. Aref Adaptive processing of spatial-keyword data over a distributed streaming cluster. 219-228 2018 SIGSPATIAL/GIS https://doi.org/10.1145/3274895.3274932 https://www.wikidata.org/entity/Q130898094 conf/gis/2018 db/conf/gis/gis2018.html#MahmoodDATBPA18 Ahmed R. Mahmood Ahmed M. Aly Walid G. Aref FAST: Frequency-Aware Indexing for Spatio-Textual Data Streams. 305-316 2018 ICDE https://doi.org/10.1109/ICDE.2018.00036 https://doi.ieeecomputersociety.org/10.1109/ICDE.2018.00036 conf/icde/2018 db/conf/icde/icde2018.html#MahmoodAA18 Amgad Madkour Ahmed M. Aly Walid G. Aref WORQ: Workload-Driven RDF Query Processing. 583-599 2018 ISWC (1) https://doi.org/10.1007/978-3-030-00671-6_34 https://www.wikidata.org/entity/Q125456648 conf/semweb/2018-1 db/conf/semweb/iswc2018-1.html#MadkourAA18 Amgad Madkour Walid G. Aref Ahmed M. Aly SPARTI: Scalable RDF Data Management Using Query-Centric Semantic Partitioning. 1:1-1:6 2018 SBD@SIGMOD https://doi.org/10.1145/3208352.3208356 https://www.wikidata.org/entity/Q130923280 conf/sigmod/2018sbd db/conf/sigmod/sbd2018.html#MadkourAA18 Amgad Madkour Walid G. Aref Sunil Prabhakar 0001 Mohamed H. Ali Siarhei Bykau TrueWeb: A Proposal for Scalable Semantically-Guided Data Management and Truth Finding in Heterogeneous Web Sources. 5:1-5:6 2018 SBD@SIGMOD https://doi.org/10.1145/3208352.3208357 https://www.wikidata.org/entity/Q130925193 conf/sigmod/2018sbd db/conf/sigmod/sbd2018.html#MadkourAPAB18 Mohamed S. Hassan 0002 Tatiana Kuznetsova Hyun Chai Jeong Walid G. Aref Mohammad Sadoghi GRFusion: Graphs as First-Class Citizens in Main-Memory Relational Database Systems. 1789-1792 2018 SIGMOD Conference https://doi.org/10.1145/3183713.3193541 https://www.wikidata.org/entity/Q130882907 conf/sigmod/2018 db/conf/sigmod/sigmod2018.html#HassanKJAS18 Mohamed S. Hassan 0002 Bruno Ribeiro 0001 Walid G. Aref SBG-sketch: a self-balanced sketch for labeled-graph stream summarization. 3:1-3:12 2018 SSDBM https://doi.org/10.1145/3221269.3223030 conf/ssdbm/2018 db/conf/ssdbm/ssdbm2018.html#HassanRA18 Walid G. Aref Electronic Ink Indexing. 2018 Encyclopedia of Database Systems (2nd ed.) https://doi.org/10.1007/978-1-4614-8265-9_143 reference/db/2018 db/reference/db/e2.html#Aref18 Walid G. Aref Window-Based Query Processing. 2018 Encyclopedia of Database Systems (2nd ed.) https://doi.org/10.1007/978-1-4614-8265-9_468 reference/db/2018 db/reference/db/w2.html#Aref18a Ahmed R. Mahmood Walid G. Aref Saleh M. Basalamah Indexing with Crowds. 2018 Encyclopedia of Database Systems (2nd ed.) https://doi.org/10.1007/978-1-4614-8265-9_80656 reference/db/2018 db/reference/db/i2.html#MahmoodAB18 Mohamed F. Mokbel Walid G. Aref Indexing Historical Spatiotemporal Data. 2018 Encyclopedia of Database Systems (2nd ed.) https://doi.org/10.1007/978-1-4614-8265-9_198 reference/db/2018 db/reference/db/i2.html#MokbelA18 Mohamed F. Mokbel Walid G. Aref Space-Filling Curves. 2018 Encyclopedia of Database Systems (2nd ed.) https://doi.org/10.1007/978-1-4614-8265-9_349 reference/db/2018 db/reference/db/s2.html#MokbelA18a Mohamed F. Mokbel Walid G. Aref Space-Filling Curves for Query Processing. 2018 Encyclopedia of Database Systems (2nd ed.) https://doi.org/10.1007/978-1-4614-8265-9_350 reference/db/2018 db/reference/db/s2.html#MokbelA18b

Muhamad Felemban Yahya Javed Jason Kobes Thamir Qadah Arif Ghafoor Walid G. Aref Design and Evaluation of A Data Partitioning-Based Intrusion Management Architecture for Database Systems. 2018 abs/1810.02061 CoRR http://arxiv.org/abs/1810.02061 db/journals/corr/corr1810.html#abs-1810-02061

Yongyang Yu MingJie Tang Walid G. Aref Qutaibah M. Malluhi Mostafa M. Abbas Mourad Ouzzani In-Memory Distributed Matrix Computation Processing and Optimization. 1047-1058 2017 ICDE https://doi.org/10.1109/ICDE.2017.150 https://doi.ieeecomputersociety.org/10.1109/ICDE.2017.150 conf/icde/2017 db/conf/icde/icde2017.html#YuTAMAO17 Ahmed R. Mahmood Walid G. Aref Query Processing Techniques for Big Spatial-Keyword Data. 1777-1782 2017 SIGMOD Conference https://doi.org/10.1145/3035918.3054773 conf/sigmod/2017 db/conf/sigmod/sigmod2017.html#MahmoodA17 Xiaopeng Xiong Mohamed F. Mokbel Walid G. Aref Continuous Queries in Spatio-Temporal Databases. 340-345 2017 Encyclopedia of GIS https://doi.org/10.1007/978-3-319-17885-1_207 reference/gis/2017 db/reference/gis/gis2017.html#XiongMA17 Xiaopeng Xiong Mohamed F. Mokbel Walid G. Aref Spatiotemporal Database. 2150-2151 2017 Encyclopedia of GIS https://doi.org/10.1007/978-3-319-17885-1_1316 reference/gis/2017 db/reference/gis/gis2017.html#XiongMA17a

Amgad Madkour Walid G. Aref Faizan Ur Rehman Mohamed Abdur Rahman 0001 Saleh M. Basalamah A Survey of Shortest-Path Algorithms. 2017 abs/1705.02044 CoRR http://arxiv.org/abs/1705.02044 db/journals/corr/corr1705.html#MadkourARRB17

Ahmed R. Mahmood Walid G. Aref Ahmed M. Aly FAST: Frequency-Aware Spatio-Textual Indexing for In-Memory Continuous Filter Query Processing. 2017 abs/1709.02529 CoRR http://arxiv.org/abs/1709.02529 db/journals/corr/corr1709.html#abs-1709-02529

Ahmed R. Mahmood Anas Daghistani Ahmed M. Aly Walid G. Aref MingJie Tang Saleh M. Basalamah Sunil Prabhakar 0001 Adaptive Processing of Spatial-Keyword Data Over a Distributed Streaming Cluster. 2017 abs/1709.02533 CoRR http://arxiv.org/abs/1709.02533 db/journals/corr/corr1709.html#abs-1709-02533

Mohamed S. Hassan 0002 Tatiana Kuznetsova Hyun Chai Jeong Walid G. Aref Mohammad Sadoghi Empowering In-Memory Relational Database Engines with Native Graph Processing. 2017 abs/1709.06715 CoRR http://arxiv.org/abs/1709.06715 db/journals/corr/corr1709.html#abs-1709-06715

Mohamed S. Hassan 0002 Bruno Ribeiro 0001 Walid G. Aref SBG-Sketch: A Self-Balanced Sketch for Labeled-Graph Stream Summarization. 2017 abs/1709.06723 CoRR http://arxiv.org/abs/1709.06723 db/journals/corr/corr1709.html#abs-1709-06723

El Kindi Rezig Mourad Ouzzani Ahmed K. Elmagarmid Walid G. Aref Human-Centric Data Cleaning [Vision]. 2017 abs/1712.08971 CoRR http://arxiv.org/abs/1712.08971 db/journals/corr/corr1712.html#abs-1712-08971

El Kindi Rezig Mourad Ouzzani Walid G. Aref Ahmed K. Elmagarmid Ahmed R. Mahmood Pattern-Driven Data Cleaning. 2017 abs/1712.09437 CoRR http://arxiv.org/abs/1712.09437 db/journals/corr/corr1712.html#abs-1712-09437

Shashi Shekhar 0001 Steven K. Feiner Walid G. Aref Spatial computing. 72-81 2016 59 Commun. ACM 1 https://doi.org/10.1145/2756547 https://www.wikidata.org/entity/Q130905048 db/journals/cacm/cacm59.html#ShekharFA16

Wadha J. Al Marri Qutaibah M. Malluhi Mourad Ouzzani MingJie Tang Walid G. Aref The similarity-aware relational database set operators. 79-93 2016 59 Inf. Syst. https://doi.org/10.1016/j.is.2015.10.008 db/journals/is/is59.html#MarriMOTA16

MingJie Tang Yongyang Yu Qutaibah M. Malluhi Mourad Ouzzani Walid G. Aref LocationSpark: A Distributed In-Memory Data Management System for Big Spatial Data. 1565-1568 2016 9 Proc. VLDB Endow. 13 http://www.vldb.org/pvldb/vol9/p1565-tang.pdf https://doi.org/10.14778/3007263.3007310 https://www.wikidata.org/entity/Q130904313 db/journals/pvldb/pvldb9.html#TangYMOA16

Mohamed F. Mokbel Chi-Yin Chow Walid G. Aref Location Data Management: A Tale of Two Systems and the "Next Destination"! 1622 2016 9 Proc. VLDB Endow. 13 http://www.vldb.org/pvldb/vol9/p1622-mokbel.pdf https://doi.org/10.14778/3007263.3007327 db/journals/pvldb/pvldb9.html#MokbelCA16

MingJie Tang Ruby Y. Tahboub Walid G. Aref Mikhail J. Atallah Qutaibah M. Malluhi Mourad Ouzzani Yasin N. Silva Similarity Group-by Operators for Multi-Dimensional Relational Data. 510-523 2016 28 IEEE Trans. Knowl. Data Eng. 2 https://doi.org/10.1109/TKDE.2015.2480400 http://doi.ieeecomputersociety.org/10.1109/TKDE.2015.2480400 https://www.wikidata.org/entity/Q114983405 db/journals/tkde/tkde28.html#TangTAAMOS16

Amr Magdy 0001 Ahmed M. Aly Mohamed F. Mokbel Sameh Elnikety Yuxiong He Suman Nath Walid G. Aref GeoTrend: spatial trending queries on real-time microblogs. 7:1-7:10 2016 SIGSPATIAL/GIS https://doi.org/10.1145/2996913.2996986 conf/gis/2016 db/conf/gis/gis2016.html#0001AMEHNA16 Ahmed R. Mahmood Walid G. Aref Ahmed M. Aly MingJie Tang Atlas: on the expression of spatial-keyword group queries using extended relational constructs. 45:1-45:10 2016 SIGSPATIAL/GIS https://doi.org/10.1145/2996913.2996987 conf/gis/2016 db/conf/gis/gis2016.html#MahmoodAAT16 El Kindi Rezig Eduard C. Dragut Mourad Ouzzani Ahmed K. Elmagarmid Walid G. Aref ORLF: A flexible framework for online record linkage and fusion. 1378-1381 2016 ICDE https://doi.org/10.1109/ICDE.2016.7498349 https://doi.ieeecomputersociety.org/10.1109/ICDE.2016.7498349 conf/icde/2016 db/conf/icde/icde2016.html#RezigDOEA16 Ahmed S. Abdelhamid MingJie Tang Ahmed M. Aly Ahmed R. Mahmood Thamir Qadah Walid G. Aref Saleh M. Basalamah Cruncher: Distributed in-memory processing for location-based services. 1406-1409 2016 ICDE https://doi.org/10.1109/ICDE.2016.7498356 https://doi.ieeecomputersociety.org/10.1109/ICDE.2016.7498356 conf/icde/2016 db/conf/icde/icde2016.html#AbdelhamidTAMQA16 MingJie Tang Ruby Y. Tahboub Walid G. Aref Mikhail J. Atallah Qutaibah M. Malluhi Mourad Ouzzani Yasin N. Silva Similarity Group-By operators for multi-dimensional relational data. 1448-1449 2016 ICDE https://doi.org/10.1109/ICDE.2016.7498368 https://doi.ieeecomputersociety.org/10.1109/ICDE.2016.7498368 conf/icde/2016 db/conf/icde/icde2016.html#TangTAAMOS16 Mohamed S. Hassan 0002 Walid G. Aref Ahmed M. Aly Graph Indexing for Shortest-Path Finding over Dynamic Sub-Graphs. 1183-1197 2016 SIGMOD Conference https://doi.org/10.1145/2882903.2882933 conf/sigmod/2016 db/conf/sigmod/sigmod2016.html#HassanAA16 Ahmed M. Aly Hazem Elmeleegy Yan Qi 0002 Walid G. Aref Kangaroo: Workload-Aware Processing of Range Data and Range Queries in Hadoop. 397-406 2016 WSDM https://doi.org/10.1145/2835776.2835841 https://www.wikidata.org/entity/Q131113349 conf/wsdm/2016 db/conf/wsdm/wsdm2016.html#AlyE0A16

Shashi Shekhar 0001 Steven Feiner Walid G. Aref From GPS and virtual globes to spatial computing - 2020. 799-832 2015 19 GeoInformatica 4 https://doi.org/10.1007/s10707-015-0235-9 db/journals/geoinformatica/geoinformatica19.html#ShekharFA15

Yuta Otsuka Ai Muto Rikiya Takeuchi Chihiro Okada Motokazu Ishikawa Koichiro Nakamura Natsuko Yamamoto Hitomi Dose Kenji Nakahigashi Shigeki Tanishima Sivasundaram Suharnan Wataru Nomura Toru Nakayashiki Walid G. Aref Barry R. Bochner Tyrrell Conway Michael Gribskov Daisuke Kihara Kenneth E. Rudd Yukako Tohsato Barry L. Wanner Hirotada Mori GenoBase: comprehensive resource database of <i>Escherichia coli</i> K-12. 606-617 2015 43 Nucleic Acids Res. Database-Issue https://doi.org/10.1093/nar/gku1164 https://www.wikidata.org/entity/Q35254112 db/journals/nar/nar43.html#OtsukaMTOINYDNTSNNABCGKRTWM15

Ahmed M. Aly Ahmed S. Abdelhamid Ahmed R. Mahmood Walid G. Aref Mohamed S. Hassan 0002 Hazem Elmeleegy Mourad Ouzzani A Demonstration of AQWA: Adaptive Query-Workload-Aware Partitioning of Big Spatial Data. 1968-1971 2015 8 Proc. VLDB Endow. 12 http://www.vldb.org/pvldb/vol8/p1968-Aly.pdf https://doi.org/10.14778/2824032.2824113 https://www.wikidata.org/entity/Q131122065 db/journals/pvldb/pvldb8.html#AlyAMAHEO15

Ahmed R. Mahmood Ahmed M. Aly Thamir Qadah El Kindi Rezig Anas Daghistani Amgad Madkour Ahmed S. Abdelhamid Mohamed S. Hassan 0002 Walid G. Aref Saleh M. Basalamah Tornado: A Distributed Spatio-Textual Stream Processing System. 2020-2023 2015 8 Proc. VLDB Endow. 12 http://www.vldb.org/pvldb/vol8/p2020-mahmood.pdf https://doi.org/10.14778/2824032.2824126 https://www.wikidata.org/entity/Q130905187 db/journals/pvldb/pvldb8.html#MahmoodAQRDMAHA15

Ahmed M. Aly Ahmed R. Mahmood Mohamed S. Hassan 0002 Walid G. Aref Mourad Ouzzani Hazem Elmeleegy Thamir Qadah AQWA: Adaptive Query-Workload-Aware Partitioning of Big Spatial Data. 2062-2073 2015 8 Proc. VLDB Endow. 13 http://www.vldb.org/pvldb/vol8/p2062-Aly.pdf https://doi.org/10.14778/2831360.2831361 db/journals/pvldb/pvldb8.html#AlyMHAOEQ15

Zahid Pervaiz Arif Ghafoor Walid G. Aref Precision-Bounded Access Control Using Sliding-Window Query Views for Privacy-Preserving Data Streams. 1992-2004 2015 27 IEEE Trans. Knowl. Data Eng. 7 https://doi.org/10.1109/TKDE.2015.2391098 http://doi.ieeecomputersociety.org/10.1109/TKDE.2015.2391098 db/journals/tkde/tkde27.html#PervaizGA15

MingJie Tang Yongyang Yu Walid G. Aref Qutaibah M. Malluhi Mourad Ouzzani Efficient Processing of Hamming-Distance-Based Similarity-Search Queries Over MapReduce. 361-372 2015 EDBT https://doi.org/10.5441/002/edbt.2015.32 conf/edbt/2015 db/conf/edbt/edbt2015.html#TangYAMO15 Ahmed M. Aly Walid G. Aref Mourad Ouzzani Cost Estimation of Spatial k-Nearest-Neighbor Operators. 457-468 2015 EDBT https://doi.org/10.5441/002/edbt.2015.40 conf/edbt/2015 db/conf/edbt/edbt2015.html#AlyAO15 Walid G. Aref Sunil Prabhakar 0001 Jaewoo Shin 0001 Ruby Y. Tahboub Aya Abdelsalam Jalaleldeen W. Aref On map-centric programming environments: vision paper. 15:1-15:4 2015 SIGSPATIAL/GIS https://doi.org/10.1145/2820783.2820886 https://www.wikidata.org/entity/Q130904995 conf/gis/2015 db/conf/gis/gis2015.html#ArefPSTAA15 Ahmed M. Aly Walid G. Aref Mourad Ouzzani Spatial queries with k-nearest-neighbor and relational predicates. 28:1-28:10 2015 SIGSPATIAL/GIS https://doi.org/10.1145/2820783.2820815 https://www.wikidata.org/entity/Q130903149 conf/gis/2015 db/conf/gis/gis2015.html#AlyAO15 Amgad Madkour Walid G. Aref Mohamed F. Mokbel Saleh M. Basalamah Geo-tagging non-spatial concepts. 31-39 2015 MobiGIS https://doi.org/10.1145/2834126.2834138 https://www.wikidata.org/entity/Q130904658 conf/gis/2015mobigis db/conf/gis/mobigis2015.html#MadkourAMB15 Ruby Y. Tahboub Jaewoo Shin 0001 Aya Abdelsalam Jalaleldeen W. Aref Walid G. Aref Sunil Prabhakar 0001 LIMO: learning programming using interactive map activities. 98:1-98:4 2015 SIGSPATIAL/GIS https://doi.org/10.1145/2820783.2820796 https://www.wikidata.org/entity/Q130902879 conf/gis/2015 db/conf/gis/gis2015.html#TahboubSAAAP15 Khaleel Mershad 0001 Qutaibah M. Malluhi Mourad Ouzzani MingJie Tang Walid G. Aref Approving Updates in Collaborative Databases. 42-47 2015 IC2E https://doi.org/10.1109/IC2E.2015.31 conf/ic2e/2015 db/conf/ic2e/ic2e2015.html#MershadMOTA15

Zahid Pervaiz Walid G. Aref Arif Ghafoor Nagabhushana Prabhu Accuracy-Constrained Privacy-Preserving Access Control Mechanismfor Relational Data. 795-807 2014 26 IEEE Trans. Knowl. Data Eng. 4 https://doi.org/10.1109/TKDE.2013.71 http://doi.ieeecomputersociety.org/10.1109/TKDE.2013.71 db/journals/tkde/tkde26.html#PervaizAGP14

Mohamed Y. Eltabakh Walid G. Aref Ahmed K. Elmagarmid Mourad Ouzzani HandsOn DB: Managing Data Dependencies Involving Human Actions. 2193-2206 2014 26 IEEE Trans. Knowl. Data Eng. 9 https://doi.org/10.1109/TKDE.2013.117 http://doi.ieeecomputersociety.org/10.1109/TKDE.2013.117 db/journals/tkde/tkde26.html#EltabakhAEO14

Ahmed M. Aly Walid G. Aref Mourad Ouzzani Hosam M. Mahmoud JISC: Adaptive Stream Processing Using Just-In-Time State Completion. 73-84 2014 EDBT https://doi.org/10.5441/002/edbt.2014.08 conf/edbt/2014 db/conf/edbt/edbt2014.html#AlyAOM14 Ahmed R. Mahmood Walid G. Aref Ahmed M. Aly Saleh M. Basalamah Indexing recent trajectories of moving objects. 393-396 2014 SIGSPATIAL/GIS https://doi.org/10.1145/2666310.2666427 conf/gis/2014 db/conf/gis/gis2014.html#MahmoodAAB14 Wadha J. Al Marri Qutaibah M. Malluhi Mourad Ouzzani MingJie Tang Walid G. Aref The Similarity-Aware Relational Intersect Database Operator. 164-175 2014 SISAP https://doi.org/10.1007/978-3-319-11988-5_15 conf/sisap/2014 db/conf/sisap/sisap2014.html#MarriMOTA14

MingJie Tang Ruby Y. Tahboub Walid G. Aref Qutaibah M. Malluhi Mourad Ouzzani On Order-independent Semantics of the Similarity Group-By Relational Database Operator. 2014 abs/1412.4303 CoRR http://arxiv.org/abs/1412.4303 db/journals/corr/corr1412.html#TangTAMO14

MingJie Tang Ruby Y. Tahboub Walid G. Aref Mikhail J. Atallah Qutaibah M. Malluhi Mourad Ouzzani Yasin N. Silva Similarity Group-by Operators for Multi-dimensional Relational Data. 2014 abs/1412.4842 CoRR http://arxiv.org/abs/1412.4842 db/journals/corr/corr1412.html#TangTAAMOS14

Hicham G. Elmongui Mohamed F. Mokbel Walid G. Aref Continuous aggregate nearest neighbor queries. 63-95 2013 17 GeoInformatica 1 https://doi.org/10.1007/s10707-011-0149-0 db/journals/geoinformatica/geoinformatica17.html#ElmonguiMA13

Yasin N. Silva Walid G. Aref Per-Åke Larson Spencer Pearson Mohamed H. Ali Similarity queries: their conceptual evaluation, transformations, and processing. 395-420 2013 22 VLDB J. 3 https://doi.org/10.1007/s00778-012-0296-4 db/journals/vldb/vldb22.html#SilvaALPA13

Amgad Madkour Walid G. Aref Saleh M. Basalamah Knowledge cubes - A proposal for scalable and semantically-guided management of Big Data. 1-7 2013 IEEE BigData https://doi.org/10.1109/BigData.2013.6691800 https://doi.ieeecomputersociety.org/10.1109/BigData.2013.6691800 https://www.wikidata.org/entity/Q57186353 conf/bigdataconf/2013 db/conf/bigdataconf/bigdataconf2013.html#MadkourAB13 Ahmed R. Mahmood Walid G. Aref Eduard C. Dragut Saleh M. Basalamah The Palm-tree Index: Indexing with the crowd. 26-31 2013 DBCrowd https://ceur-ws.org/Vol-1025/research4.pdf conf/dbcrowd/2013 db/conf/dbcrowd/dbcrowd2013.html#MahmoodADB13

Ahmed M. Aly Walid G. Aref Mourad Ouzzani Spatial Queries with Two kNN Predicates. 1100-1111 2012 5 Proc. VLDB Endow. 11 http://vldb.org/pvldb/vol5/p1100_ahmedmaly_vldb2012.pdf https://doi.org/10.14778/2350229.2350231 db/journals/pvldb/pvldb5.html#AlyAO12

Abdulrahman Almutairi Muhammad I. Sarfraz Saleh M. Basalamah Walid G. Aref Arif Ghafoor A Distributed Access Control Architecture for Cloud Computing. 36-44 2012 29 IEEE Softw. 2 https://doi.org/10.1109/MS.2011.153 http://doi.ieeecomputersociety.org/10.1109/MS.2011.153 db/journals/software/software29.html#AlmutairiSBAG12

Fei-Yue Wang 0001 Lee Stogner Walid G. Aref Jaime Lloret Mauri Yacine Ghamri-Doudane Azer Bestavros Yu Yuan David George Dorrell Mehrdad Ehsani Gianfranco Rizzo V. Setty Pendakur Message from the Program Chairs. xiii-xiv 2012 ICCVE https://doi.ieeecomputersociety.org/10.1109/ICCVE.2012.6 conf/iccve/2012 db/conf/iccve/iccve2012.html#WangSAMGBYDERP12 Ahmed M. Aly Asmaa Sallam Bala M. Gnanasekaran Long-Van Nguyen-Dinh Walid G. Aref Mourad Ouzzani Arif Ghafoor M3: Stream Processing on Main-Memory MapReduce. 1253-1256 2012 ICDE https://doi.org/10.1109/ICDE.2012.120 https://doi.ieeecomputersociety.org/10.1109/ICDE.2012.120 conf/icde/2012 db/conf/icde/icde2012.html#AlySGNAOG12

Ahmed M. Aly Walid G. Aref Mourad Ouzzani Spatial Queries with Two kNN Predicates http://arxiv.org/abs/1208.0074 2012 CoRR abs/1208.0074 db/journals/corr/corr1208.html#abs-1208-0074

Mohamed F. Mokbel Walid G. Aref Irregularity in high-dimensional space-filling curves. 217-238 2011 29 Distributed Parallel Databases 3 https://doi.org/10.1007/s10619-010-7070-7 db/journals/dpd/dpd29.html#MokbelA11

Long-Van Nguyen-Dinh Walid G. Aref Mohamed F. Mokbel Spatio-Temporal Access Methods: Part 2 (2003 - 2010). 46-55 2010 33 IEEE Data Eng. Bull. 2 http://sites.computer.org/debull/A10june/Aref.pdf db/journals/debu/debu33.html#Nguyen-DinhAM10

Thanaa M. Ghanem Ahmed K. Elmagarmid Per-Åke Larson Walid G. Aref Supporting views in data stream management systems. 2010 35 ACM Trans. Database Syst. 1 https://doi.org/10.1145/1670243.1670244 db/journals/tods/tods35.html#GhanemELA10 1:1-1:47

Mohamed Y. Eltabakh Walid G. Aref Ahmed K. Elmagarmid A database server for next-generation scientific data management. 313-316 2010 ICDE Workshops https://doi.org/10.1109/ICDEW.2010.5452723 https://doi.ieeecomputersociety.org/10.1109/ICDEW.2010.5452723 conf/icde/2010w db/conf/icde/icdew2010.html#EltabakhAE10 Mohamed Y. Eltabakh Walid G. Aref Ahmed K. Elmagarmid Yasin N. Silva Mourad Ouzzani Supporting real-world activities in database management systems. 808-811 2010 ICDE https://doi.org/10.1109/ICDE.2010.5447842 https://doi.ieeecomputersociety.org/10.1109/ICDE.2010.5447842 conf/icde/2010 db/conf/icde/icde2010.html#EltabakhAESO10 Yasin N. Silva Walid G. Aref Mohamed H. Ali The similarity join database operator. 892-903 2010 ICDE https://doi.org/10.1109/ICDE.2010.5447873 https://doi.ieeecomputersociety.org/10.1109/ICDE.2010.5447873 conf/icde/2010 db/conf/icde/icde2010.html#SilvaAA10 Yasin N. Silva Ahmed M. Aly Walid G. Aref Per-Åke Larson SimDB: a similarity-aware database system. 1243-1246 2010 SIGMOD Conference https://doi.org/10.1145/1807167.1807330 conf/sigmod/2010 db/conf/sigmod/sigmod2010.html#SilvaAAL10

Hazem Elmeleegy Ahmed K. Elmagarmid Emmanuel Cecchet Walid G. Aref Willy Zwaenepoel Online Piece-wise Linear Approximation of Numerical Streams with Precision Guarantees. 145-156 2009 2 Proc. VLDB Endow. 1 http://www.vldb.org/pvldb/vol2/vldb09-573.pdf https://doi.org/10.14778/1687627.1687645 https://www.wikidata.org/entity/Q130960865 db/journals/pvldb/pvldb2.html#ElmeleegyECAZ09

Chi-Yin Chow Mohamed F. Mokbel Walid G. Aref Casper*: Query processing for location services without compromising privacy. 2009 34 ACM Trans. Database Syst. 4 https://doi.org/10.1145/1620585.1620591 https://www.wikidata.org/entity/Q64038999 db/journals/tods/tods34.html#ChowMA09 24:1-24:48

Yasin N. Silva Xiaopeng Xiong Walid G. Aref The RUM-tree: supporting frequent updates in R-trees using memos. 719-738 2009 18 VLDB J. 3 https://doi.org/10.1007/s00778-008-0120-3 db/journals/vldb/vldb18.html#SilvaXA09

Shazia Sadiq Ke Deng Xiaofang Zhou 0001 Xiaochun Yang 0001 Walid G. Aref Alex Delis Qing Liu 0001 Kai Xu 0003 Workshop Organizers' Message. 95-96 2009 DASFAA Workshops https://doi.org/10.1007/978-3-642-04205-8_9 conf/dasfaa/2009w db/conf/dasfaa/dasfaa2009w.html#SadiqDZYADLX09 Mohamed Y. Eltabakh Walid G. Aref Ahmed K. Elmagarmid Mourad Ouzzani Yasin N. Silva Supporting annotations on relations. 379-390 2009 EDBT https://doi.org/10.1145/1516360.1516405 conf/edbt/2009 db/conf/edbt/edbt2009.html#EltabakhAEOS09 Yasin N. Silva Muhammad Umer Arshad Walid G. Aref Exploiting similarity-aware grouping in decision support systems. 1144-1147 2009 EDBT https://doi.org/10.1145/1516360.1516499 conf/edbt/2009 db/conf/edbt/edbt2009.html#SilvaAA09 Walid G. Aref Hicham G. Elmongui Mourad Ouzzani Location-aware privacy and more: a systems approach using context-aware database management systems. 42-52 2009 SPRINGL https://doi.org/10.1145/1667502.1667513 conf/gis/2009springl db/conf/gis/springl2009.html#ArefEO09 Ashish Bindra Ankur Teredesai Mohamed H. Ali Walid G. Aref Multi-dimensional phenomenon-aware stream query processing. 476-479 2009 GIS https://doi.org/10.1145/1653771.1653848 conf/gis/2009 db/conf/gis/gis2009.html#BindraTAA09 Yasin N. Silva Walid G. Aref Mohamed H. Ali Similarity Group-By. 904-915 2009 ICDE https://doi.org/10.1109/ICDE.2009.113 https://doi.ieeecomputersociety.org/10.1109/ICDE.2009.113 conf/icde/2009 db/conf/icde/icde2009.html#SilvaAA09 Hicham G. Elmongui Walid G. Aref Mohamed F. Mokbel Chameleon: Context-Awareness inside DBMSs. 1335-1338 2009 ICDE https://doi.org/10.1109/ICDE.2009.234 https://doi.ieeecomputersociety.org/10.1109/ICDE.2009.234 conf/icde/2009 db/conf/icde/icde2009.html#ElmonguiAM09 Jalaja Padma Yasin N. Silva Muhammad Umer Arshad Walid G. Aref Hippocratic PostgreSQL. 1555-1558 2009 ICDE https://doi.org/10.1109/ICDE.2009.126 https://doi.ieeecomputersociety.org/10.1109/ICDE.2009.126 conf/icde/2009 db/conf/icde/icde2009.html#PadmaSAA09 Yasin N. Silva Walid G. Aref Similarity-aware Query Processing and Optimization. 2009 VLDB PhD Workshop http://www.vldb.org/pvldb/2/vldb09-1068.pdf conf/vldb/2009phd db/conf/vldb/vldb2009phd.html#SilvaA09 Divyakant Agrawal Walid G. Aref Chang-Tien Lu Mohamed F. Mokbel Peter Scheuermann Cyrus Shahabi Ouri Wolfson 17th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems, ACM-GIS 2009, November 4-6, 2009, Seattle, Washington, USA, Proceedings 978-1-60558-649-6 GIS ACM 2009 db/conf/gis/gis2009.html Walid G. Aref Electronic Ink Indexing. 972-978 2009 Encyclopedia of Database Systems https://doi.org/10.1007/978-0-387-39940-9_143 reference/db/2009 db/reference/db/e.html#Aref09 Mohamed F. Mokbel Walid G. Aref Indexing Historical Spatio-Temporal Data. 1448-1451 2009 Encyclopedia of Database Systems https://doi.org/10.1007/978-0-387-39940-9_198 reference/db/2009 db/reference/db/i.html#MokbelA09 Mohamed F. Mokbel Walid G. Aref Space-Filling Curves. 2674-2675 2009 Encyclopedia of Database Systems https://doi.org/10.1007/978-0-387-39940-9_349 reference/db/2009 db/reference/db/s.html#MokbelA09a Mohamed F. Mokbel Walid G. Aref Space-Filling Curves for Query Processing. 2675-2680 2009 Encyclopedia of Database Systems https://doi.org/10.1007/978-0-387-39940-9_350 reference/db/2009 db/reference/db/s.html#MokbelA09b Walid G. Aref Window-based Query Processing. 3533-3538 2009 Encyclopedia of Database Systems https://doi.org/10.1007/978-0-387-39940-9_468 reference/db/2009 db/reference/db/w.html#Aref09a

Moustafa A. Hammad Walid G. Aref Ahmed K. Elmagarmid Query processing of multi-way stream window joins. 2008 17 3 469-488 VLDB J. https://doi.org/10.1007/s00778-006-0017-y db/journals/vldb/vldb17.html#HammadAE08

Mohamed F. Mokbel Walid G. Aref SOLE: scalable on-line execution of continuous queries on spatio-temporal data streams. 2008 17 5 971-995 VLDB J. https://doi.org/10.1007/s00778-007-0046-1 db/journals/vldb/vldb17.html#MokbelA08

Mohamed Y. Eltabakh Wing-Kai Hon Rahul Shah 0001 Walid G. Aref Jeffrey Scott Vitter The SBC-tree: an index for run-length compressed sequences. 523-534 2008 EDBT https://doi.org/10.1145/1353343.1353407 conf/edbt/2008 db/conf/edbt/edbt2008.html#EltabakhHSAV08 Mohamed Y. Eltabakh Mourad Ouzzani Walid G. Aref Ahmed K. Elmagarmid Yasin Laura-Silva Muhammad Umer Arshad David E. Salt Ivan Baxter Managing Biological Data using BDBMS. 1600-1603 2008 ICDE https://doi.org/10.1109/ICDE.2008.4497631 https://doi.ieeecomputersociety.org/10.1109/ICDE.2008.4497631 conf/icde/2008 db/conf/icde/icde2008.html#EltabakhOAELASB08 Walid G. Aref Mourad Ouzzani Data management challenges for computational transportation. 2008 MobiQuitous https://doi.org/10.4108/ICST.MOBIQUITOUS2008.4014 https://dl.acm.org/citation.cfm?id=1594983 conf/mobiquitous/2008 db/conf/mobiquitous/mobiquitous2008.html#ArefO08 Walid G. Aref Mohamed F. Mokbel Markus Schneider 0001 16th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems, ACM-GIS 2008, November 5-7, 2008, Irvine, California, USA, Proceedings 978-1-60558-323-5 GIS ACM 2008 db/conf/gis/gis2008.html Xiaopeng Xiong Mohamed F. Mokbel Walid G. Aref Continuous Queries in Spatio-temporal Databases. 161-165 2008 Encyclopedia of GIS https://doi.org/10.1007/978-0-387-35973-1_207 reference/gis/2008 db/reference/gis/gis2008.html#XiongMA08 Mohamed F. Mokbel Walid G. Aref Space-Filling Curves. 1068-1072 2008 Encyclopedia of GIS https://doi.org/10.1007/978-0-387-35973-1_1233 reference/gis/2008 db/reference/gis/gis2008.html#MokbelA08 Xiaopeng Xiong Mohamed F. Mokbel Walid G. Aref Spatio-temporal Database. 1114-1115 2008 Encyclopedia of GIS https://doi.org/10.1007/978-0-387-35973-1_1316 reference/gis/2008 db/reference/gis/gis2008.html#XiongMA08a

Susanne E. Hambrusch Chuan-Ming Liu Walid G. Aref Sunil Prabhakar 0001 Efficient query execution on broadcasted index tree structures. 511-529 2007 60 Data Knowl. Eng. 3 https://doi.org/10.1016/j.datak.2006.03.011 db/journals/dke/dke60.html#HambruschLAP07

Thanaa M. Ghanem Moustafa A. Hammad Mohamed F. Mokbel Walid G. Aref Ahmed K. Elmagarmid Incremental Evaluation of Sliding-Window Queries over Data Streams. 57-72 2007 19 IEEE Trans. Knowl. Data Eng. 1 https://doi.org/10.1109/TKDE.2007.250585 http://doi.ieeecomputersociety.org/10.1109/TKDE.2007.250585 db/journals/tkde/tkde19.html#GhanemHMAE07

Mohamed Y. Eltabakh Mourad Ouzzani Walid G. Aref bdbms - A Database Management System for Biological Data. 196-206 2007 conf/cidr/2007 CIDR http://cidrdb.org/cidr2007/papers/cidr07p22.pdf db/conf/cidr/cidr2007.html#ArefEO07 Walid G. Aref Pipelined spatial join processing for quadtree-based indexes. 49 2007 conf/gis/2007 GIS https://doi.org/10.1145/1341012.1341073 db/conf/gis/gis2007.html#Aref07 Yasin Laura-Silva Walid G. Aref Realizing Privacy-Preserving Features in Hippocratic Databases. 198-206 2007 conf/icde/2007w ICDE Workshops https://doi.org/10.1109/ICDEW.2007.4400992 https://doi.ieeecomputersociety.org/10.1109/ICDEW.2007.4400992 db/conf/icde/icdew2007.html#Laura-SilvaA07 Mohamed F. Mokbel Chi-Yin Chow Walid G. Aref The New Casper: A Privacy-Aware Location-Based Database Server. 1499-1500 2007 conf/icde/2007 ICDE https://doi.org/10.1109/ICDE.2007.369052 https://doi.ieeecomputersociety.org/10.1109/ICDE.2007.369052 db/conf/icde/icde2007.html#MokbelCA07 M. H. Ali Mohamed F. Mokbel Walid G. Aref Phenomenon-Aware Stream Query Processing. 8-15 2007 conf/mdm/2007 MDM https://doi.org/10.1109/MDM.2007.11 https://doi.ieeecomputersociety.org/10.1109/MDM.2007.11 db/conf/mdm/mdm2007.html#AliMA07 Xiaopeng Xiong Hicham G. Elmongui Xiaoyong Chai Walid G. Aref Place: A Distributed Spatio-Temporal Data Stream Management System for Moving Objects. 44-51 2007 conf/mdm/2007 MDM https://doi.org/10.1109/MDM.2007.16 https://doi.ieeecomputersociety.org/10.1109/MDM.2007.16 db/conf/mdm/mdm2007.html#XiongECA07 Mohamed F. Mokbel Walid G. Aref Location-Aware Query Processing and Optimization. 229 2007 conf/mdm/2007 MDM https://doi.org/10.1109/MDM.2007.46 https://doi.ieeecomputersociety.org/10.1109/MDM.2007.46 db/conf/mdm/mdm2007.html#MokbelA07 Mohamed Y. Eltabakh Mourad Ouzzani Walid G. Aref Duplicate Elimination in Space-partitioning Tree Indexes. 18 2007 conf/ssdbm/2007 SSDBM https://doi.org/10.1109/SSDBM.2007.10 https://doi.ieeecomputersociety.org/10.1109/SSDBM.2007.10 db/conf/ssdbm/ssdbm2007.html#EltabakhOA07

Thanaa M. Ghanem Walid G. Aref Ahmed K. Elmagarmid Exploiting predicate-window semantics over data streams. 3-8 2006 35 SIGMOD Rec. 1 https://doi.org/10.1145/1121995.1121996 db/journals/sigmod/sigmod35.html#GhanemAE06

Ihab F. Ilyas Walid G. Aref Ahmed K. Elmagarmid Hicham G. Elmongui Rahul Shah 0001 Jeffrey Scott Vitter Adaptive rank-aware query optimization in relational databases. 1257-1304 2006 31 ACM Trans. Database Syst. 4 https://doi.org/10.1145/1189769.1189772 db/journals/tods/tods31.html#IlyasAEESV06

Xiaopeng Xiong Walid G. Aref R-trees with Update Memos. 22 2006 conf/icde/2006 ICDE https://doi.org/10.1109/ICDE.2006.125 https://doi.ieeecomputersociety.org/10.1109/ICDE.2006.125 db/conf/icde/icde2006.html#XiongA06 Mohamed Y. Eltabakh Ramy Eltarras Walid G. Aref Space-Partitioning Trees in PostgreSQL: Realization and Performance. 100 2006 conf/icde/2006 ICDE https://doi.org/10.1109/ICDE.2006.146 https://doi.ieeecomputersociety.org/10.1109/ICDE.2006.146 db/conf/icde/icde2006.html#EltabakhEA06 Mohamed G. Elfeky Walid G. Aref Ahmed K. Elmagarmid STAGGER: Periodicity Mining of Data Streams Using Expanding Sliding Windows. 188-199 2006 conf/icdm/2006 ICDM https://doi.org/10.1109/ICDM.2006.153 https://doi.ieeecomputersociety.org/10.1109/ICDM.2006.153 db/conf/icdm/icdm2006.html#ElfekyAE06 Xiaopeng Xiong Mohamed F. Mokbel Walid G. Aref LUGrid: Update-tolerant Grid-based Indexing for Moving Objects. 13 2006 conf/mdm/2006 MDM https://doi.org/10.1109/MDM.2006.102 https://doi.ieeecomputersociety.org/10.1109/MDM.2006.102 db/conf/mdm/mdm2006.html#XiongMA06 Hicham G. Elmongui Mourad Ouzzani Walid G. Aref Challenges in spatiotemporal stream query optimization. 27-34 2006 conf/mobide/2006 MobiDE https://doi.org/10.1145/1140104.1140111 db/conf/mobide/mobide2006.html#ElmonguiOA06 Mohamed H. Ali Walid G. Aref Ibrahim Kamel Scalability Management in Sensor-Network PhenomenaBases. 91-100 2006 conf/ssdbm/2006 SSDBM https://doi.org/10.1109/SSDBM.2006.46 https://doi.ieeecomputersociety.org/10.1109/SSDBM.2006.46 db/conf/ssdbm/ssdbm2006.html#AliAK06 Mohamed Y. Eltabakh Walid G. Aref Mourad Ouzzani Mohamed H. Ali Discovering Consensus Patterns in Biological Databases. 170-184 2006 conf/vdmb/2006 VDMB https://doi.org/10.1007/11960669_15 db/conf/vdmb/vdmb2006.html#EltabakhAOA06 Mohamed F. Mokbel Chi-Yin Chow Walid G. Aref The New Casper: Query Processing for Location Services without Compromising Privacy. 763-774 2006 conf/vldb/2006 VLDB http://dl.acm.org/citation.cfm?id=1164193 http://www.vldb.org/conf/2006/p763-mokbel.pdf db/conf/vldb/vldb2006.html#MokbelCA06

Mohamed Y. Eltabakh Mourad Ouzzani Walid G. Aref bdbms - A Database Management System for Biological Data http://arxiv.org/abs/cs/0612127 2006 CoRR abs/cs/0612127 db/journals/corr/corr0612.html#abs-cs-0612127

Mohamed F. Mokbel Walid G. Aref PLACE: A Scalable Location-aware Database Server for Spatio-temporal Data Streams. 3-10 2005 28 IEEE Data Eng. Bull. 3 http://sites.computer.org/debull/A05sept/aref.ps db/journals/debu/debu28.html#MokbelA05

Mohamed F. Mokbel Xiaopeng Xiong Moustafa A. Hammad Walid G. Aref Continuous Query Processing of Spatio-Temporal Data Streams in PLACE. 343-365 2005 9 GeoInformatica 4 https://doi.org/10.1007/s10707-005-4576-7 db/journals/geoinformatica/geoinformatica9.html#MokbelXHA05

Mourad Ouzzani Walid G. Aref Elisa Bertino Ann Christine Catlin Christopher W. Clifton Wing-Kai Hon Ahmed K. Elmagarmid Arif Ghafoor Susanne E. Hambrusch Sunil Prabhakar 0001 Jeffrey Scott Vitter Xiang Zhang The Indiana Center for Database Systems at Purdue University. 53-58 2005 34 SIGMOD Rec. 2 https://doi.org/10.1145/1083784.1083795 db/journals/sigmod/sigmod34.html#OuzzaniABCCHEGHPVZ05

Mohamed G. Elfeky Walid G. Aref Ahmed K. Elmagarmid Periodicity Detection in Time Series Databases. 875-887 2005 17 IEEE Trans. Knowl. Data Eng. 7 https://doi.org/10.1109/TKDE.2005.114 http://doi.ieeecomputersociety.org/10.1109/TKDE.2005.114 db/journals/tkde/tkde17.html#ElfekyAE05

Xiaopeng Xiong Mohamed F. Mokbel Walid G. Aref SEA-CNN: Scalable Processing of Continuous K-Nearest Neighbor Queries in Spatio-temporal Databases. 2005 conf/icde/2005 ICDE db/conf/icde/icde2005.html#XiongMA05 643-654 https://doi.org/10.1109/ICDE.2005.128 https://doi.ieeecomputersociety.org/10.1109/ICDE.2005.128 Ihab F. Ilyas Walid G. Aref Rank-Aware Query Processing and Optimization. 1144 2005 conf/icde/2005 ICDE https://doi.org/10.1109/ICDE.2005.119 https://doi.ieeecomputersociety.org/10.1109/ICDE.2005.119 https://www.wikidata.org/entity/Q56651779 db/conf/icde/icde2005.html#IlyasA05 Mohamed G. Elfeky Walid G. Aref Ahmed K. Elmagarmid WARP: Time Warping for Periodicity Detection. 138-145 2005 conf/icdm/2005 ICDM https://doi.org/10.1109/ICDM.2005.152 https://doi.ieeecomputersociety.org/10.1109/ICDM.2005.152 db/conf/icdm/icdm2005.html#ElfekyAE05 Mohamed F. Mokbel Walid G. Aref GPAC: generic and progressive processing of mobile queries over mobile data. 155-163 2005 conf/mdm/2005 Mobile Data Management https://doi.org/10.1145/1071246.1071270 db/conf/mdm/mdm2005.html#MokbelA05 Mohamed H. Ali Walid G. Aref Cristina Nita-Rotaru SPASS: scalable and energy-efficient data acquisition in sensor databases. 81-88 2005 conf/mobide/2005 MobiDE https://doi.org/10.1145/1065870.1065884 db/conf/mobide/mobide2005.html#AliAN05 Hicham G. Elmongui Mohamed F. Mokbel Walid G. Aref Spatio-temporal Histograms. 19-36 2005 conf/ssd/2005 SSTD https://doi.org/10.1007/11535331_2 db/conf/ssd/sstd2005.html#ElmonguiMA05 Moustafa A. Hammad Walid G. Aref Ahmed K. Elmagarmid Optimizing In-Order Execution of Continuous Queries over Streamed Sensor Data. 143-146 2005 conf/ssdbm/2005 SSDBM db/conf/ssdbm/ssdbm2005.html#HammadAE05 Mohamed H. Ali Mohamed F. Mokbel Walid G. Aref Ibrahim Kamel Detection and Tracking of Discrete Phenomena in Sensor-Network Databases. 163-172 2005 conf/ssdbm/2005 SSDBM db/conf/ssdbm/ssdbm2005.html#AliMAK05 Mohamed H. Ali Walid G. Aref Raja Bose Ahmed K. Elmagarmid Abdelsalam Helal Ibrahim Kamel Mohamed F. Mokbel NILE-PDT: A Phenomenon Detection and Tracking Framework for Data Stream Management Systems. 1295-1298 2005 conf/vldb/2005 VLDB http://www.vldb.org/conf/2005/papers/p1295-ali.pdf http://dl.acm.org/citation.cfm?id=1083755 db/conf/vldb/vldb2005.html#AliABEHKM05

Thanaa M. Ghanem Walid G. Aref Databases Deepen the Web. 116-117 2004 37 Computer 1 https://doi.org/10.1109/MC.2004.1260731 http://doi.ieeecomputersociety.org/10.1109/MC.2004.1260731 db/journals/computer/computer37.html#GhanemA04

Walid G. Aref Ann Christine Catlin Ahmed K. Elmagarmid Jianping Fan 0001 Moustafa A. Hammad Ihab F. Ilyas Mirette S. Marzouk Sunil Prabhakar 0001 Yi-Cheng Tu Xingquan Zhu 0001 VDBMS: A testbed facility for research in video database benchmarking. 575-585 2004 9 Multim. Syst. 6 https://doi.org/10.1007/s00530-003-0129-9 https://www.wikidata.org/entity/Q56653831 db/journals/mms/mms9.html#ArefCEFHIMPTZ04

Xingquan Zhu 0001 Xindong Wu 0001 Jianping Fan 0001 Ahmed K. Elmagarmid Walid G. Aref Exploring video content structure for hierarchical summarization. 98-115 2004 10 Multim. Syst. 2 https://doi.org/10.1007/s00530-004-0142-7 https://www.wikidata.org/entity/Q114830399 db/journals/mms/mms10.html#ZhuWFEA04

Walid G. Aref Mohamed G. Elfeky Ahmed K. Elmagarmid Incremental, Online, and Merge Mining of Partial Periodic Patterns in Time-Series Databases. 332-342 2004 16 IEEE Trans. Knowl. Data Eng. 3 https://doi.org/10.1109/TKDE.2003.1262186 http://doi.ieeecomputersociety.org/10.1109/TKDE.2003.1262186 db/journals/tkde/tkde16.html#ArefEE04

Jianping Fan 0001 Ahmed K. Elmagarmid Xingquan Zhu 0001 Walid G. Aref Lide Wu ClassView: hierarchical video shot classification, indexing, and accessing. 70-86 2004 6 IEEE Trans. Multim. 1 https://doi.org/10.1109/TMM.2003.819583 db/journals/tmm/tmm6.html#FanEZAW04

Ihab F. Ilyas Walid G. Aref Ahmed K. Elmagarmid Supporting top-k join queries in relational databases. 207-221 2004 13 VLDB J. 3 https://doi.org/10.1007/s00778-004-0128-2 https://www.wikidata.org/entity/Q56654616 db/journals/vldb/vldb13.html#IlyasAE04

Mohamed G. Elfeky Walid G. Aref Ahmed K. Elmagarmid Using Convolution to Mine Obscure Periodic Patterns in One Pass. 605-620 https://doi.org/10.1007/978-3-540-24741-8_35 2004 conf/edbt/2004 EDBT db/conf/edbt/edbt2004.html#ElfekyAE04 Thanaa M. Ghanem Rahul Shah 0001 Mohamed F. Mokbel Walid G. Aref Jeffrey Scott Vitter Bulk Operations for Space-Partitioning Trees. 29-40 2004 conf/icde/2004 ICDE https://doi.org/10.1109/ICDE.2004.1319982 https://doi.ieeecomputersociety.org/10.1109/ICDE.2004.1319982 db/conf/icde/icde2004.html#GhanemSMAV04 Mohamed F. Mokbel Ming Lu Walid G. Aref Hash-Merge Join: A Non-blocking Join Algorithm for Producing Fast and Early Join Results. 251-262 2004 conf/icde/2004 ICDE https://doi.org/10.1109/ICDE.2004.1320002 https://doi.ieeecomputersociety.org/10.1109/ICDE.2004.1320002 db/conf/icde/icde2004.html#MokbelLA04 Mohamed F. Mokbel Walid G. Aref Khaled M. Elbassioni Ibrahim Kamel Scalable Multimedia Disk Scheduling. 498-509 2004 conf/icde/2004 ICDE https://doi.org/10.1109/ICDE.2004.1320022 https://doi.ieeecomputersociety.org/10.1109/ICDE.2004.1320022 db/conf/icde/icde2004.html#MokbelAEK04 Moustafa A. Hammad Mohamed F. Mokbel Mohamed H. Ali Walid G. Aref Ann Christine Catlin Ahmed K. Elmagarmid Mohamed Y. Eltabakh Mohamed G. Elfeky Thanaa M. Ghanem Robert Gwadera Ihab F. Ilyas Mirette S. Marzouk Xiaopeng Xiong Nile: A Query Processing Engine for Data Streams. 851 2004 conf/icde/2004 ICDE https://doi.org/10.1109/ICDE.2004.1320080 https://doi.ieeecomputersociety.org/10.1109/ICDE.2004.1320080 https://www.wikidata.org/entity/Q56655145 db/conf/icde/icde2004.html#HammadMAACEEEGGIMX04 Ihab F. Ilyas Rahul Shah 0001 Walid G. Aref Jeffrey Scott Vitter Ahmed K. Elmagarmid Rank-aware Query Optimization. 2004 conf/sigmod/2004 SIGMOD Conference db/conf/sigmod/sigmod2004.html#IlyasSAVE04 203-214 https://doi.org/10.1145/1007568.1007593 https://www.wikidata.org/entity/Q56656657 Mohamed F. Mokbel Xiaopeng Xiong Walid G. Aref SINA: Scalable Incremental Processing of Continuous Queries in Spatio-temporal Databases. 2004 conf/sigmod/2004 SIGMOD Conference db/conf/sigmod/sigmod2004.html#MokbelXA04 623-634 https://doi.org/10.1145/1007568.1007638 http://www.sigmod.org/sigmod/sigmod04/eproceedings/pdf/R-432.pdf Xiaopeng Xiong Mohamed F. Mokbel Walid G. Aref Susanne E. Hambrusch Sunil Prabhakar 0001 Scalable Spatio-temporal Continuous Query Processing for Location-aware Services. 317-326 2004 conf/ssdbm/2004 SSDBM https://doi.ieeecomputersociety.org/10.1109/SSDBM.2004.61 db/conf/ssdbm/ssdbm2004.html#XiongMAHP04 Mohamed F. Mokbel Xiaopeng Xiong Moustafa A. Hammad Walid G. Aref Continuous Query Processing of Spatio-temporal Data Streams in PLACE. 57-64 2004 conf/stdbm/2004 STDBM http://db.cs.ualberta.ca/stdbm04/Proceedings/09.pdf db/conf/stdbm/stdbm2004.html#MokbelXHA04 Mohamed F. Mokbel Xiaopeng Xiong Walid G. Aref Susanne E. Hambrusch Sunil Prabhakar 0001 Moustafa A. Hammad PLACE: A Query Processor for Handling Real-time Spatio-temporal Data Streams. 1377-1380 2004 conf/vldb/2004 VLDB http://www.vldb.org/conf/2004/DEMP32.PDF https://doi.org/10.1016/B978-012088469-8.50151-0 db/conf/vldb/vldb2004.html#MokbelXAHPH04

Mohamed F. Mokbel Thanaa M. Ghanem Walid G. Aref Spatio-Temporal Access Methods. 40-49 2003 http://sites.computer.org/debull/A03june/arefF.ps 26 IEEE Data Eng. Bull. 2 db/journals/debu/debu26.html#MokbelGA03

Mohamed F. Mokbel Walid G. Aref Ibrahim Kamel Analysis of Multi-Dimensional Space-Filling Curves. 179-209 2003 7 GeoInformatica 3 db/journals/geoinformatica/geoinformatica7.html#MokbelAK03 https://doi.org/10.1023/A:1025196714293

Mohamed F. Mokbel Walid G. Aref Susanne E. Hambrusch Sunil Prabhakar 0001 Towards scalable location-aware services: requirements and research issues. 110-117 2003 conf/gis/2003 GIS https://doi.org/10.1145/956676.956691 db/conf/gis/gis2003.html#MokbelAHP03 Xingquan Zhu 0001 Walid G. Aref Jianping Fan 0001 Ann Christine Catlin Ahmed K. Elmagarmid Medical Video Mining for Efficient Database Indexing, Management and Access. 569-580 https://doi.org/10.1109/ICDE.2003.1260822 https://doi.ieeecomputersociety.org/10.1109/ICDE.2003.1260822 2003 conf/icde/2003 ICDE db/conf/icde/icde2003.html#ZhuAFCE03 Mohamed F. Mokbel Walid G. Aref Ananth Grama Spectral LPM: An Optimal Locality-Preserving Mapping using the Spectral (not Fractal) Order. 699-701 https://doi.org/10.1109/ICDE.2003.1260840 https://doi.ieeecomputersociety.org/10.1109/ICDE.2003.1260840 2003 conf/icde/2003 ICDE db/conf/icde/icde2003.html#MokbelAG03 Walid G. Aref Moustafa A. Hammad Ann Christine Catlin Ihab F. Ilyas Thanaa M. Ghanem Ahmed K. Elmagarmid Mirette S. Marzouk Video query processing in the VDBMS testbed for video database research. 25-32 2003 conf/mmdb/2003 MMDB https://doi.org/10.1145/951676.951682 https://www.wikidata.org/entity/Q56660211 db/conf/mmdb/mmdb2003.html#ArefHCIGEM03 Mohamed F. Mokbel Walid G. Aref On Querz Processing and Optimality Using Spectral Locality-Preserving Mappings. 102-121 https://doi.org/10.1007/978-3-540-45072-6_7 2003 conf/ssd/2003 SSTD db/conf/ssd/sstd2003.html#MokbelA03 Moustafa A. Hammad Walid G. Aref Ahmed K. Elmagarmid Stream Window Join: Tracking Moving Objects in Sensor-Network Databases. 75-84 2003 conf/ssdbm/2003 SSDBM https://doi.org/10.1109/SSDM.2003.1214967 https://doi.ieeecomputersociety.org/10.1109/SSDM.2003.1214967 db/conf/ssdbm/ssdbm2003.html#HammadAE03 http://www.vldb.org/conf/2003/papers/S10P02.pdf https://doi.org/10.1016/B978-012722442-8/50034-3 Moustafa A. Hammad Michael J. Franklin Walid G. Aref Ahmed K. Elmagarmid Scheduling for shared window joins over data streams. 2003 conf/vldb/2003 VLDB db/conf/vldb/vldb2003.html#HammadFAE03 297-308 http://www.vldb.org/conf/2003/papers/S23P01.pdf https://doi.org/10.1016/B978-012722442-8/50072-0 Ihab F. Ilyas Walid G. Aref Ahmed K. Elmagarmid Supporting Top-k Join Queries in Relational Databases. 2003 conf/vldb/2003 VLDB db/conf/vldb/vldb2003.html#IlyasAE03 754-765

Fotis Kokkoras Haitao Jiang Ioannis P. Vlahavas Ahmed K. Elmagarmid Elias N. Houstis Walid G. Aref Smart VideoText: a video data model based on conceptual graphs. 328-338 2002 8 Multim. Syst. 4 https://doi.org/10.1007/s005300200054 https://www.wikidata.org/entity/Q62864909 db/journals/mms/mms8.html#KokkorasJVEHA02

Sunil Prabhakar 0001 Yuni Xia Dmitri V. Kalashnikov Walid G. Aref Susanne E. Hambrusch Query Indexing and Velocity Constrained Indexing: Scalable Techniques for Continuous Queries on Moving Objects. 1124-1140 2002 51 IEEE Trans. Computers 10 https://doi.org/10.1109/TC.2002.1039840 http://doi.ieeecomputersociety.org/10.1109/TC.2002.1039840 db/journals/tc/tc51.html#PrabhakarXKAH02

Dmitri V. Kalashnikov Sunil Prabhakar 0001 Susanne E. Hambrusch Walid G. Aref Efficient Evaluation of Continuous Range Queries on Moving Objects. 731-740 2002 conf/dexa/2002 DEXA https://doi.org/10.1007/3-540-46146-9_72 db/conf/dexa/dexa2002.html#KalashnikovPHA02 Xingquan Zhu 0001 Jianping Fan 0001 Walid G. Aref Ahmed K. Elmagarmid ClassMiner: Mining Medical Video Content Structure and Events Towards Efficient Access and Scalable Skimming. 2002 conf/dmkd/2002 DMKD http://www.bell-labs.com/user/minos/DMKD02/Papers/zhu.pdf db/conf/dmkd/dmkd2002.html#ZhuFAE02 Christos Berberidis Walid G. Aref Mikhail J. Atallah Ioannis P. Vlahavas Ahmed K. Elmagarmid Multiple and Partial Periodicity Mining in Time Series Databases. 370-374 2002 conf/ecai/2002 ECAI db/conf/ecai/ecai2002.html#BerberidisAAVE02 Mohamed F. Mokbel Walid G. Aref Ibrahim Kamel Performance of multi-dimensional space-filling curves. 149-154 2002 conf/gis/2002 ACM-GIS https://doi.org/10.1145/585147.585179 db/conf/gis/gis2002.html#MokbelAK02 Walid G. Aref Ann Christine Catlin Ahmed K. Elmagarmid Jianping Fan 0001 J. Guo Moustafa A. Hammad Ihab F. Ilyas Mirette S. Marzouk Sunil Prabhakar 0001 Abdelmounaam Rezgui S. Teoh Evimaria Terzi Yi-Cheng Tu Athena Vakali Xingquan Zhu 0001 A Distributed Database Server for Continuous Media. 490-491 2002 conf/icde/2002 ICDE https://doi.org/10.1109/ICDE.2002.994764 https://doi.ieeecomputersociety.org/10.1109/ICDE.2002.994764 https://www.wikidata.org/entity/Q56664108 db/conf/icde/icde2002.html#ArefCEFGHIMPRTTTVZ02 Moustafa A. Hammad Walid G. Aref Ahmed K. Elmagarmid Search-based buffer management policies for streaming in continuous media servers. 253-256 2002 ICME (1) https://doi.org/10.1109/ICME.2002.1035766 conf/icmcs/2002-1 db/conf/icmcs/icme2002-1.html#HammadAE02 Walid G. Aref Khaled El-Bassyouni Ibrahim Kamel Mohamed F. Mokbel Scalable QoS-Aware Disk-Scheduling. 256-265 2002 conf/ideas/2002 IDEAS https://doi.org/10.1109/IDEAS.2002.1029678 https://doi.ieeecomputersociety.org/10.1109/IDEAS.2002.1029678 db/conf/ideas/ideas2002.html#ArefEKM02 Walid G. Aref Ann Christine Catlin Jianping Fan 0001 Ahmed K. Elmagarmid Moustafa A. Hammad Ihab F. Ilyas Mirette S. Marzouk Xingquan Zhu 0001 A Video Database Management System for Advancing Video Database Research. 8-17 2002 conf/mis/2002 Multimedia Information Systems db/conf/mis/mis2002.html#ArefCFEHIMZ02 Christos Berberidis Ioannis P. Vlahavas Walid G. Aref Mikhail J. Atallah Ahmed K. Elmagarmid On the Discovery of Weak Periodicities in Large Time Series. 51-61 2002 conf/pkdd/2002 PKDD https://doi.org/10.1007/3-540-45681-3_5 db/conf/pkdd/pkdd2002.html#BerberidisVAAE02 Xingquan Zhu 0001 Jianping Fan 0001 Ahmed K. Elmagarmid Walid G. Aref Hierarchical video summarization for medical data. 395-406 2002 Storage and Retrieval for Media Databases https://doi.org/10.1117/12.451110 conf/spieSR/2002 db/conf/spieSR/spieSR2002.html#ZhuFEA02 Ihab F. Ilyas Walid G. Aref Ahmed K. Elmagarmid Joining Ranked Inputs in Practice. 2002 conf/vldb/2002 VLDB db/conf/vldb/vldb2002.html#IlyasAE02 http://www.vldb.org/conf/2002/S29P02.pdf https://doi.org/10.1016/B978-155860869-6/50094-9 950-961 James B. D. Joshi Arif Ghafoor Walid G. Aref Eugene H. Spafford Security and Privacy Challenges of a Digital Government. 121-136 2002 Advances in Digital Government https://doi.org/10.1007/0-306-47374-7_7 series/ads/2002-26 db/series/ads/ads26.html#JoshiGAS02

James Joshi Walid G. Aref Arif Ghafoor Eugene H. Spafford Security models for web-based applications. 38-44 2001 44 Commun. ACM 2 https://doi.org/10.1145/359205.359224 db/journals/cacm/cacm44.html#JoshiAGS01

James Joshi Arif Ghafoor Walid G. Aref Eugene H. Spafford Digital Government Security Infrastructure Design Challenges. 66-72 2001 34 Computer 2 https://doi.org/10.1109/2.901169 http://doi.ieeecomputersociety.org/10.1109/2.901169 https://www.wikidata.org/entity/Q114991969 db/journals/computer/computer34.html#JoshiGAS01

Husni Fahmi Walid G. Aref Mudassir Latif Basit Shafiq Arif Ghafoor Peiya Liu Liang H. Hsu Distributed web-based framework for real-time multimedia object communication. 79-88 2001 16 Comput. Syst. Sci. Eng. 2 db/journals/csse/csse16.html#FahmiALSGLH01

Ashraf Aboulnaga Walid G. Aref Window Query Processing in Linear Quadtrees. 111-126 2001 10 Distributed Parallel Databases 2 db/journals/dpd/dpd10.html#AboulnagaA01 https://doi.org/10.1023/A:1019256828670

Jianping Fan 0001 Walid G. Aref Ahmed K. Elmagarmid Mohand-Said Hacid Mirette S. Marzouk Xingquan Zhu 0001 MultiView: Multilevel video content representation and retrieval. 895-908 2001 10 J. Electronic Imaging 4 https://doi.org/10.1117/1.1406944 db/journals/jei/jei10.html#FanAEHMZ01

Walid G. Aref Ihab F. Ilyas SP-GiST: An Extensible Database Index for Supporting Space Partitioning Trees. 215-240 2001 17 J. Intell. Inf. Syst. 2-3 db/journals/jiis/jiis17.html#ArefI01 https://doi.org/10.1023/A:1012809914301 https://www.wikidata.org/entity/Q56668379

Jianping Fan 0001 Walid G. Aref Mohand-Said Hacid Ahmed K. Elmagarmid An improved automatic isotropic color edge detection technique. 1419-1429 2001 22 Pattern Recognit. Lett. 13 https://doi.org/10.1016/S0167-8655(01)00082-4 db/journals/prl/prl22.html#FanAHE01

Jianping Fan 0001 David K. Y. Yau Ahmed K. Elmagarmid Walid G. Aref Automatic image segmentation by integrating color-edge extraction and seeded region growing. 1454-1466 2001 10 IEEE Trans. Image Process. 10 https://doi.org/10.1109/83.951532 https://www.wikidata.org/entity/Q38392367 db/journals/tip/tip10.html#FanYEA01

Walid G. Aref Ibrahim Kamel Shahram Ghandeharizadeh Disk Scheduling in Video Editing Systems. 933-950 2001 13 IEEE Trans. Knowl. Data Eng. 6 https://doi.org/10.1109/69.971188 http://doi.ieeecomputersociety.org/10.1109/69.971188 db/journals/tkde/tkde13.html#ArefKG01

Mohamed F. Mokbel Walid G. Aref Irregularity in Multi-Dimensional Space-Filling Curves with Applications in Multimedia Databases. 512-519 2001 conf/cikm/2001 CIKM db/conf/cikm/cikm2001.html#MokbelA01 https://doi.org/10.1145/502585.502671 Susanne E. Hambrusch Chuan-Ming Liu Walid G. Aref Sunil Prabhakar 0001 Query Processing in Broadcasted Spatial Index Trees. 502-521 2001 conf/ssd/2001 SSTD https://doi.org/10.1007/3-540-47724-1_26 db/conf/ssd/sstd2001.html#HambruschLAP01 Walid G. Aref Ihab F. Ilyas An Extensible Index for Spatial Databases. 49-58 2001 conf/ssdbm/2001 SSDBM db/conf/ssdbm/ssdbm2001.html#ArefI01 https://doi.org/10.1109/SSDM.2001.938537 https://doi.ieeecomputersociety.org/10.1109/SSDM.2001.938537 https://www.wikidata.org/entity/Q56669003 Walid G. Aref ACM-GIS 2001, Proceedings of the Ninth ACM International Symposium on Advances in Geographic Information Systems, Atlanta, GA, USA, November 9-10, 2001 ACM 2001 1-58113-443-6 db/conf/gis/gis2001.html

Jianping Fan 0001 David K. Y. Yau Walid G. Aref Abdelmounaam Rezgui Adaptive motion-compensated video coding scheme towards content-based bit rate allocation. 521-533 2000 9 J. Electronic Imaging 4 https://doi.org/10.1117/1.1287534 https://www.wikidata.org/entity/Q56953672 db/journals/jei/jei9.html#FanYAR00

Elisa Bertino Moustafa A. Hammad Walid G. Aref Ahmed K. Elmagarmid An Access Control Model for Video Database Systems. 336-343 2000 conf/cikm/2000 CIKM https://doi.org/10.1145/354756.354838 db/conf/cikm/cikm2000.html#BertinoHAE00 Walid G. Aref Ibrahim Kamel On Multi-dimensional Sorting Orders. 774-783 https://doi.org/10.1007/3-540-44469-6_72 2000 conf/dexa/2000 DEXA db/conf/dexa/dexa2000.html#ArefK00 Husni Fahmi Walid G. Aref Mudassir Latif Arif Ghafoor Peiya Liu Liang H. Hsu Distributed Framework for Real-Time Multimedia Object Communication. 252-259 2000 conf/isorc/2000 ISORC https://doi.org/10.1109/ISORC.2000.839537 https://doi.ieeecomputersociety.org/10.1109/ISORC.2000.839537 db/conf/isorc/isorc2000.html#FahmiALGLH00

Walid G. Aref Daniel Barbará Supporting Electronic Ink Databases. 303-326 1999 24 Inf. Syst. 4 db/journals/is/is24.html#ArefB99 https://doi.org/10.1016/S0306-4379(99)00020-4 https://www.wikidata.org/entity/Q126382625

Wael M. Badawy Walid G. Aref On Local Heuristics to Speed Up Polygon-Polygon Intersection Tests. 97-102 GIS1999/P097.pdf 1999 conf/gis/99 ACM-GIS https://doi.org/10.1145/320134.320160 db/conf/gis/gis99.html#BadawyA99 Cuneyt Akinlar Walid G. Aref Ibrahim Kamel Sarit Mukherjee Autonomous Disks: The Building Block for a Scalable Distributed File System. 41-47 1999 conf/mis/1999 Multimedia Information Systems db/conf/mis/mis1999.html#AkinlarAKM99

Walid G. Aref Hanan Samet Efficient Window Block Retrieval in Quadtree-Based Spatial Databases. 59-91 1997 1 GeoInformatica 1 db/journals/geoinformatica/geoinformatica1.html#ArefS97 https://doi.org/10.1023/A:1009760201355

Walid G. Aref Hanan Samet Cascaded Spatial Join Algorithms with Spatially Sorted Output. 17-24 GIS1996/P017.pdf 1996 conf/gis/96 ACM-GIS https://doi.org/10.1145/258319.258327 db/conf/gis/gis96.html#ArefS96 Walid G. Aref Daniel Barbará Daniel P. Lopresti Ink as a First-Class Datatype in Multimedia Databases. 113-163 1996 books/sp/SubrahmanianJ96 Multimedia Database System: Issues and Research Direction db/books/collections/SubrahmanianJ96.html#ArefBL96

Walid G. Aref Hanan Samet An Algorithm for Perspective Viewing of Objects Represented by Octrees. 59-66 1995 14 Comput. Graph. Forum 1 db/journals/cgf/cgf14.html#ArefS95 https://doi.org/10.1111/1467-8659.1410059

Walid G. Aref Ibrahim Kamel Daniel P. Lopresti On Handling Electronic Ink. 564-567 1995 27 ACM Comput. Surv. 4 db/journals/csur/csur27.html#ArefKL95 https://doi.org/10.1145/234782.234791

Walid G. Aref Hanan Samet A Window Retrieval Algorithm for Spatial Databases Using Quadtrees. 69- 1995 conf/gis/95 ACM-GIS db/conf/gis/gis95.html#ArefS95 Walid G. Aref Daniel Barbará Stephen Johnson Sharad Mehrotra Efficient Processing of Proximity Queries for Large Databases. 147-154 ICDE95/P147.pdf 1995 ICDE db/conf/icde/icde95.html#ArefBJM95 conf/icde/95 https://doi.org/10.1109/ICDE.1995.380398 https://doi.ieeecomputersociety.org/10.1109/ICDE.1995.380398 ... journals/csur/BentleyF79 journals/tse/Chang90a journals/is/DavisR80 journals/siamcomp/DobkinL76 ... conf/pods/FaloutsosR89 conf/sigmod/HoelS92 conf/icde/Jagadish90 journals/ipl/ManberB91 books/sp/PreparataS85 journals/siamcomp/Rivest76 books/bc/TanselCGJSS93 Walid G. Aref Daniel Barbará Padmavathi Vallabhaneni The Handwritten Trie: Indexing Electronic Ink. 151-162 1995 conf/sigmod/95 SIGMOD Conference db/conf/sigmod/sigmod95.html#ArefBV95 https://doi.org/10.1145/223784.223811 https://doi.org/10.1145/568271.223811 SIGMOD95/P151.PDF ... ... ... ... ... ... ... ... ... books/aw/Knuth73 ... ... ... ... ... ... ... ... ... ... Hanan Samet Walid G. Aref Spatial Data Models and Query Processing. 338-360 1995 books/acm/Kim95 Modern Database Systems db/books/collections/kim95.html#SametA95 Walid G. Aref Hanan Samet Hashing by Proximity to Process Duplicates in Spatial Databases. 347-354 CIKM1994/P347.pdf 1994 conf/cikm/94 CIKM db/conf/cikm/cikm94.html#ArefS94 https://doi.org/10.1145/191246.191307 Walid G. Aref Hanan Samet A Cost Model for Query Optimization Using R-Trees. 1994 ACM-GIS conf/gis/1994 db/conf/gis/gis94.html#ArefS94

Walid G. Aref Hanan Samet Decomposing a Window into Maximal Quadtree Blocks. 425-439 1993 30 Acta Informatica 5 db/journals/acta/acta30.html#ArefS93 https://doi.org/10.1007/BF01210594

Walid G. Aref Hanan Samet Estimating Selectivity Factors of Spatial Operations. 31-43 1993 conf/fmldo/1993 FMLDO db/conf/fmldo/fmldo93.html#ArefS93 https://doi.org/10.1007/3-540-54414-3_44 Walid G. Aref Hanan Samet Extending a DBMS with Spatial Operations. 299-318 SSD/1991/P299.pdf 1991 conf/ssd/91 SSD db/conf/ssd/ssd91.html#ArefS91 conf/vldb/91 Walid G. Aref Hanan Samet Optimization for Spatial Query Processing. 81-90 1991 VLDB db/conf/vldb/vldb91.html#ArefS91 http://www.vldb.org/conf/1991/P081.PDF ... conf/ssd/ArefS91 journals/tods/BeckerG92 ... books/bc/ElmasriN89 conf/sigmod/GraefeD87 conf/vldb/Guting89 conf/sigmod/HaasFLP89 journals/csur/JarkeK84 ... conf/sigmod/Orenstein86 ... conf/nf2/SchekS87 ... conf/ssd/Wolf89 journals/tods/WongY76 conf/pods/90 Walid G. Aref Hanan Samet Efficient Processing of Window Queries in The Pyramid Data Structure. 265-272 1990 PODS db/conf/pods/pods90.html#ArefS90 https://doi.org/10.1145/298514.298579 journals/anthology/cd1-3:PODS90/P265.PDF journals/anthology/dvd1:text/1-3/PODS90/P265.PDF ... ... ... ... ... ... books/aw/Samet90 ... ... ... ... ... Mostafa M. Abbas Ahmed S. Abdelhamid Aya Abdelsalam Ashraf Aboulnaga Divyakant Agrawal Cuneyt Akinlar Abdullah Al-Mamun 0003 Mohamed H. AliM. H. Ali Mohammed Eunus Ali Abdulaziz Almaslukh Jussara M. Almeida Abdulrahman Almutairi Ahmed M. Aly Khaled Ammar Tong An Taylor Anderson 0001 Gennady L. Andrienko Natalia V. Andrienko Renzo Angles Jalaleldeen W. Aref Marcelo Arenas Muhammad Umer Arshad Mikhail J. Atallah Muhammad Ali Babar 0001 Wael M. Badawy Daniel Barbará Saleh M. Basalamah Ivan Baxter Christos Berberidis Elisa Bertino Michela Bertolotto Maciej Besta Azer Bestavros Ashish Bindra Barry R. Bochner Peter BonczPeter A. Boncz Angela Bonifati Raja Bose Panagiotis Bouros Siarhei Bykau Yang Cao 0011 Ann Christine Catlin Emmanuel Cecchet Xiaoyong Chai Sanjay Chawla Muhammad Aamir Cheema Yue Chen Zhida Chen Reynold Cheng Gautam Choudhary Chi-Yin Chow Panos K. Chrysanthis Bo-Cheng Chu Chris CliftonChristopher W. Clifton Gao Cong Tyrrell Conway Bin Cui 0001 Anas Daghistani Khuzaima Daudjee Alex Delis Ke Deng David G. DorrellDavid George Dorrell Hitomi Dose Eduard C. Dragut Stefania Dumbrava Amr Ebaid David S. Ebert Mehrdad Ehsani Khaled El-Bassyouni Khaled M. Elbassioni Mohamed G. Elfeky Ahmed K. Elmagarmid Hazem Elmeleegy Hicham G. Elmongui Sameh Elnikety Mohamed Y. Eltabakh Ramy Eltarras Husni Fahmi Jianping Fan 0001 Xiqi Fei Steven K. FeinerSteven Feiner Muhamad Felemban Leila De Floriani Michael J. Franklin Chuqing Gao Arif Ghafoor Yacine Ghamri-Doudane Shahram Ghandeharizadeh Thanaa M. Ghanem Gabriel Ghinita Bala M. Gnanasekaran Mohammad Goudarzi Ananth Grama Anita Graser Michael Gribskov Dimitrios Gunopulos J. Guo Jingjing Guo Robert Gwadera Mohand-Said Hacid Ch. Md. Rakin Haider Susanne E. Hambrusch Moustafa A. Hammad Olaf Hartig Bernhard Haslhofer Mohamed S. Hassan 0002 Qiyang He Yuxiong He Tim Hegeman Abdelsalam Helal Jan Hidders Wing-Kai Hon Katja Hose Elias N. Houstis Liang H. Hsu Adriana Iamnitchi Stratos Idreos Ihab F. Ilyas Alexandru Iosup Motokazu Ishikawa Yahya Javed Christian S. Jensen Hyun Chai Jeong Haitao Jiang Stephen Johnson James B. D. JoshiJames Joshi Prishita Kadam Dmitri V. Kalashnikov Vasiliki Kalavri Ibrahim Kamel Hugo Kapp Morteza Karimzadeh Mosab Khayat Han Mao Kiah Daisuke Kihara Joon-Seok Kim 0001 Kyoung-Sook Kim 0001 Jason Kobes Fotis Kokkoras Marc J. van Kreveld Peer Kröger John Krumm Udesh Kumarasinghe Tatiana Kuznetsova Per-Åke Larson Mudassir Latif Johannes Lauer Eric Lee Jiangneng Li Chuanming LiuChuan-Ming Liu Chunwei Liu Peiya Liu Qing Liu 0001 Tyler Liu Yuang Liu Cheng Long 0001 Daniel P. Lopresti Chang-Tien Lu Ming Lu Amgad Madkour Amr Magdy 0001 Ahmed Mahmood Ahmed R. Mahmood Hosam M. Mahmoud Qutaibah M. Malluhi Wadha J. Al Marri Wim Martens Mirette S. Marzouk Jaime Lloret Mauri Sharad Mehrotra Khaleel Mershad 0001 Mohamed F. Mokbel Hirotada Mori Sarit Mukherjee Ai Muto Kenji Nakahigashi Koichiro Nakamura Toru Nakayashiki Mario A. Nascimento Suman Nath Jose Florencio de Queiroz NetoJosé Florencio de Queiroz Neto Long-Van Nguyen-Dinh Cristina Nita-Rotaru Wataru Nomura Kjetil Nørvåg Chihiro Okada Yuta Otsuka Mourad Ouzzani M. 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Yau Eiko Yoneki Moustafa Youssef 0001 Yongyang Yu Yu Yuan Demetris Zeinalipour Mengxuan Zhang 0001 Xiang Zhang Libin Zhou Xiaofang Zhou 0001 Xingquan Zhu 0001 Esteban Zimányi Andreas Züfle Willy Zwaenepoel