Estimating road speed classes: Integrating OpenStreetMap and Street View imagery for missing data imputation.

Alexander Zipf Heidelberg University, Germany http://www.geog.uni-heidelberg.de/personen/gis_zipf.html https://scholar.google.com/citations?user=1TAZiPwAAAAJ https://dl.acm.org/profile/81100520171 https://orcid.org/0000-0003-4916-9838 https://www.wikidata.org/entity/Q55810174 https://id.loc.gov/authorities/names/nb2004314279 https://d-nb.info/gnd/123246369

Shiyu Tang Sukanya Randhawa Jin Rui Christina Ludwig Steffen Knoblauch Charles Hatfield Alexander Zipf Estimating road speed classes: Integrating OpenStreetMap and Street View imagery for missing data imputation. 102392 2026 125 Comput. Environ. Urban Syst. https://doi.org/10.1016/j.compenvurbsys.2025.102392 db/journals/urban/urban125.html#TangRRLKHZ26 streams/journals/urban

Steffen Knoblauch Ram Kumar Muthusamy Hao Li 0019 Iddy Chazua Benedcto Adamu Innocent Maholi Alexander Zipf Assessing Building Heat Resilience Using UAV and Street-View Imagery with Coupled Global Context Vision Transformer. 2026 January abs/2601.11357 CoRR https://doi.org/10.48550/arXiv.2601.11357 db/journals/corr/corr2601.html#abs-2601-11357 streams/journals/corr

Steffen Knoblauch Ram Kumar Muthusamy Pedram Ghamisi Alexander Zipf Automated Road Crack Localization to Guide Highway Maintenance. 2026 January abs/2601.16737 CoRR https://doi.org/10.48550/arXiv.2601.16737 db/journals/corr/corr2601.html#abs-2601-16737 streams/journals/corr

Maciej Adamiak Yulia Grinblat Julian Psotta Nir Fulman Himshikhar Mazumdar Shiyu Tang Alexander Zipf Deep learning enhanced road traffic analysis: Scalable vehicle detection and velocity estimation using PlanetScope imagery. 104707 2025 142 Int. J. Appl. Earth Obs. Geoinformation https://doi.org/10.1016/j.jag.2025.104707 db/journals/aeog/aeog142.html#AdamiakGPFMTZ25 streams/journals/aeog

Yuze Li Yan Zhang Sukanya Randhawa Chunling Yang Alexander Zipf STVAE: Skip connection driven Two-stream property fusion Variational AutoEncoder for cross-region wastewater treatment plant semantic segmentation. 102960 2025 118 Inf. Fusion https://doi.org/10.1016/j.inffus.2025.102960 db/journals/inffus/inffus118.html#LiZRYZ25 streams/journals/inffus

Nikolaos Kolaxidis Christina Ludwig Steffen Knoblauch Johannes Fürle Kathrin Foshag Sascha Fendrich Sven Lautenbach Alexander Zipf Mitigating Heat Stress by Reducing Solar Exposure in Pedestrian Routing. 2025 29 Trans. GIS 6 https://doi.org/10.1111/tgis.70110 db/journals/tgis/tgis29.html#KolaxidisLKFFFLZ25 streams/journals/tgis

Johannes Huber Christina Ludwig Kathrin Foshag Nikolaos Kolaxidis Alexander Zipf Sven Lautenbach Accessibility for pedestrians under heat stress - the example of Heidelberg, Germany. 4 2025 AGILE Conference https://doi.org/10.5194/agile-giss-6-4-2025 https://www.wikidata.org/entity/Q135113516 conf/agile/2025 db/conf/agile/agile2025.html#HuberLFKZL25 Ricardo Ruiz Sánchez Marcel Reinmuth Cristian Albornoz Sven Lautenbach Alexander Zipf Changes in Road Centrality and Hospital Access Redundancy: Impacts of the 2024 Flood in the Metropolitan Core of Porto Alegre, Brazil. 10 2025 AGILE Conference https://doi.org/10.5194/agile-giss-6-10-2025 conf/agile/2025 db/conf/agile/agile2025.html#SanchezRALZ25

Sukanya Randhawa Guntaj Randhawa Clemens Langer Francis Andorful Benjamin Herfort Daniel Kwakye Omer Olchik Sven Lautenbach Alexander Zipf The changing surface of the world's roads. 2025 December abs/2512.04092 CoRR https://doi.org/10.48550/arXiv.2512.04092 db/journals/corr/corr2512.html#abs-2512-04092 streams/journals/corr

Abdulkadir Memduhoglu Nir Fulman Alexander Zipf Enriching building function classification using Large Language Model embeddings of OpenStreetMap Tags. 5403-5418 2024 December 17 Earth Sci. Informatics 6 https://doi.org/10.1007/s12145-024-01463-8 db/journals/esi/esi17.html#MemduhogluFZ24 streams/journals/esi

Tessio Novack Leonard Vorbeck Alexander Zipf An investigation of the temporality of OpenStreetMap data contribution activities. 259-275 2024 March 27 Geo spatial Inf. Sci. 2 https://doi.org/10.1080/10095020.2022.2124127 https://www.wikidata.org/entity/Q114639182 db/journals/gsis/gsis27.html#NovackVZ24

Nir Fulman Abdulkadir Memduhoglu Alexander Zipf Evidence for Systematic Bias in the Spatial Memory of Large Language Models. 57-62 2024 GeoExT@ECIR https://ceur-ws.org/Vol-3683/paper8.pdf conf/ecir/2024geoext db/conf/ecir/geoext2024.html#FulmanMZ24 Steffen Knoblauch Levi Szamek Jonas Wenk Iddy Chazua Innocent Maholi Maciej Adamiak Sven Lautenbach Alexander Zipf UAV-Assisted Municipal Solid Waste Monitoring for Informed Disposal Decisions. 105-113 2024 GoodIT https://doi.org/10.1145/3677525.3678649 https://www.wikidata.org/entity/Q130903378 conf/goodit/2024 db/conf/goodit/goodit2024.html#KnoblauchSWCMAL24 Steffen Knoblauch Levi Szamek Jonas Wenk Iddy Chazua Innocent Maholi Maciej Adamiak Sven Lautenbach Alexander Zipf UAV-Assisted Municipal Solid Waste Monitoring for Informed Disposal Decisions [Research Data]. 2024 October https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/DATA/CEIWEA&version=1.0 heiDATA streams/repo/heidata Michael Schultz Hao Li 0019 Zhaoyhan Wu Daniel Wiell Michael Auer Alexander Zipf OpenStreetMap land use for Europe "Research Data". 2024 April https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/DATA/IUTCDN&version=1.0 heiDATA streams/repo/heidata data/11/SchultzLWWAZ24b Michael Schultz Hao Li 0019 Zhaoyhan Wu Daniel Wiell Michael Auer Alexander Zipf OpenStreetMap land use for Europe "Research Data". 2024 November https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/DATA/IUTCDN&version=2.0 heiDATA streams/repo/heidata data/11/SchultzLWWAZ24b

Nir Fulman Abdulkadir Memduhoglu Alexander Zipf Distortions in Judged Spatial Relations in Large Language Models: The Dawn of Natural Language Geographic Data? 2024 abs/2401.04218 CoRR https://doi.org/10.48550/arXiv.2401.04218 db/journals/corr/corr2401.html#abs-2401-04218

Maciej Adamiak Yulia Grinblat Julian Psotta Nir Fulman Himshikhar Mazumdar Shiyu Tang Alexander Zipf Deep Learning Enhanced Road Traffic Analysis: Scalable Vehicle Detection and Velocity Estimation Using PlanetScope Imagery. 2024 abs/2410.14698 CoRR https://doi.org/10.48550/arXiv.2410.14698 db/journals/corr/corr2410.html#abs-2410-14698 streams/journals/corr

Sukanya Randhawa Eren Aygun Guntaj Randhawa Benjamin Herfort Sven Lautenbach Alexander Zipf Paved or unpaved? A Deep Learning derived Road Surface Global Dataset from Mapillary Street-View Imagery. 2024 abs/2410.19874 CoRR https://doi.org/10.48550/arXiv.2410.19874 db/journals/corr/corr2410.html#abs-2410-19874 streams/journals/corr

Steffen Knoblauch Hao Li 0019 Sven Lautenbach Yara Elshiaty Antônio A. de A. Rocha Bernd Resch Dorian Arifi Thomas Jänisch Ivonne Morales Alexander Zipf Semi-supervised water tank detection to support vector control of emerging infectious diseases transmitted by <i>Aedes Aegypti</i>. 103304 2023 May 119 Int. J. Appl. Earth Obs. Geoinformation https://doi.org/10.1016/j.jag.2023.103304 https://www.wikidata.org/entity/Q124685313 db/journals/aeog/aeog119.html#KnoblauchLLERRAJMZ23

Veit Ulrich Josephine Brückner Michael Schultz Sanam Noreen Vardag Christina Ludwig Johannes Fürle Mohammed Zia Sven Lautenbach Alexander Zipf Private Vehicles Greenhouse Gas Emission Estimation at Street Level for Berlin Based on Open Data. 138 2023 12 ISPRS Int. J. Geo Inf. 4 https://doi.org/10.3390/ijgi12040138 db/journals/ijgi/ijgi12.html#UlrichBSVLFZLZ23

Simon Groß Benjamin Herfort Sabrina Marx Alexander Zipf Exploring MapSwipe as a Crowdsourcing Tool for (Rapid) Damage Assessment: The Case of the 2021 Haiti Earthquake. 5 2023 AGILE Conf. https://doi.org/10.5194/agile-giss-4-5-2023 conf/agile/2023 db/conf/agile/agile2023.html#GrossHMZ23 Hao Li 0019 Zhendong Yuan Gabriel Dax Gefei Kong Hongchao Fan Alexander Zipf Martin Werner 0001 Semi-Supervised Learning from Street-View Images and OpenStreetMap for Automatic Building Height Estimation. 7:1-7:15 2023 GIScience https://doi.org/10.4230/LIPIcs.GIScience.2023.7 conf/giscience/2023 db/conf/giscience/giscience2023.html#0019YDKFZ023 Alexander Zipf Using VGI for Social Good: Potentials and Pitfalls for Using OSM for Humanitarian Aid and Climate Mitigation. 7 2023 GISTAM conf/gistam/2023 db/conf/gistam/gistam2023.html#Zipf23 Sukanya Randhawa Guntaj Randhawa Olena Sivak Johannes Zech Maria Martin Alexander Zipf Yuze Li Multiscale Multifeature Vision Learning for Scalable and Efficient Wastewater Treatment Plant Detection using Hi-Res Satellite Imagery and OSM. 10-21 2023 UrbanAI@SIGSPATIAL https://doi.org/10.1145/3615900.3628772 https://www.wikidata.org/entity/Q130298571 conf/urbanai/2023 db/conf/urbanai/urbanai2023.html#RandhawaRSZMZL23 Steffen Knoblauch Hao Li 0019 Sven Lautenbach Yara Elshiaty Antônio A. de A. Rocha Bernd Resch Dorian Arifi Thomas Jänisch Ivonne Morales Alexander Zipf Semi-supervised water tank detection to support vector control of emerging infectious diseases transmitted by Aedes Aegpyti [Research Data]. 2023 April https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/data/7LLXFP&version=1.0 heiDATA data/10/KnoblauchLLERRAJMZ23b streams/repo/heidata Steffen Knoblauch Hao Li 0019 Sven Lautenbach Yara Elshiaty Antônio A. de A. Rocha Bernd Resch Dorian Arifi Thomas Jänisch Ivonne Morales Alexander Zipf Semi-supervised water tank detection to support vector control of emerging infectious diseases transmitted by Aedes Aegpyti [Research Data]. 2023 April https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/data/7LLXFP&version=1.1 heiDATA data/10/KnoblauchLLERRAJMZ23b streams/repo/heidata

Hao Li 0019 Zhendong Yuan Gabriel Dax Gefei Kong Hongchao Fan Alexander Zipf Martin Werner 0001 Semi-supervised Learning from Street-View Images and OpenStreetMap for Automatic Building Height Estimation. 2023 abs/2307.02574 CoRR https://doi.org/10.48550/arXiv.2307.02574 db/journals/corr/corr2307.html#abs-2307-02574

Danfeng Hong Bing Zhang 0001 Hao Li 0019 Yuxuan Li Jing Yao 0002 Chenyu Li 0002 Martin Werner 0001 Jocelyn Chanussot Alexander Zipf Xiao Xiang Zhu 0001 Cross-City Matters: A Multimodal Remote Sensing Benchmark Dataset for Cross-City Semantic Segmentation using High-Resolution Domain Adaptation Networks. 2023 abs/2309.16499 CoRR https://doi.org/10.48550/arXiv.2309.16499 db/journals/corr/corr2309.html#abs-2309-16499

Hao Li 0019 Johannes Zech Danfeng Hong Pedram Ghamisi Michael Schultz Alexander Zipf Leveraging OpenStreetMap and Multimodal Remote Sensing Data with Joint Deep Learning for Wastewater Treatment Plants Detection. 102804 2022 110 Int. J. Appl. Earth Obs. Geoinformation https://doi.org/10.1016/j.jag.2022.102804 db/journals/aeog/aeog110.html#LiZHGSZ22

Oliver Fritz Sabrina Marx Benjamin Herfort Soraya Kaiser Moritz Langer Josefine Lenz Christian Thiel 0001 Alexander Zipf Das Potenzial von Citizen Science für die Kartierung von Landschaftsveränderungen in arktischen Permafrostregionen / The Potential of Citizen Science for Mapping Landscape Change in Arctic Permafrost Regions. 30-40 2022 8 AGIT Journal Angew. Geoinformatik https://doi.org/10.14627/537728004 db/journals/agit/agit8.html#FritzMHKLLTZ22

Mohammed Zia Johannes Fürle Christina Ludwig Sven Lautenbach Stefan Gumbrich Alexander Zipf SocialMedia2Traffic: Derivation of Traffic Information from Social Media Data. 482 2022 11 ISPRS Int. J. Geo Inf. 9 https://doi.org/10.3390/ijgi11090482 db/journals/ijgi/ijgi11.html#ZiaFLLGZ22

Hao Li 0019 Benjamin Herfort Sven Lautenbach Jiaoyan Chen 0001 Alexander Zipf Improving OpenStreetMap missing building detection using few-shot transfer learning in sub-Saharan Africa. 3125-3146 2022 26 Trans. GIS 8 https://doi.org/10.1111/tgis.12941 db/journals/tgis/tgis26.html#LiHLCZ22

Hao Li 0019 Zhendong Yuan Tessio Novack Wei Huang 0014 Alexander Zipf Understanding spatiotemporal trip purposes of urban micro-mobility from the lens of dockless e-scooter sharing. 101848 2022 96 Comput. Environ. Urban Syst. https://doi.org/10.1016/j.compenvurbsys.2022.101848 db/journals/urban/urban96.html#LiYNHZ22

Alexander Zipf Amandaus Butzer Marcel Reinmuth Michael Auer Benjamin Herfort Adam Rousell Sven Lautenbach Stefan Gumbrich OpenStreetMap Tools for Humanitarian Aid. 441-446 2022 GEOINFO http://urlib.net/ibi/8JMKD3MGPDW34P/487MH25 conf/geoinfo/2022 db/conf/geoinfo/geoinfo2022.html#ZipfBRAHRLG22 Hao Li 0019 Johannes Zech Christina Ludwig Sascha Fendrich Aurélie Shapiro Michael Schultz Alexander Zipf Automatic mapping of national surface water with OpenStreetMap and Sentinel-2 MSI data using deep learning [Research Data]. 2022 May https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/DATA/AAKAF9&version=1.1 heiDATA streams/repo/heidata data/11/LiZLFSSZ21a

Hao Li 0019 Johannes Zech Christina Ludwig Sascha Fendrich Aurélie Shapiro Michael Schultz Alexander Zipf Automatic mapping of national surface water with OpenStreetMap and Sentinel-2 MSI data using deep learning. 102571 2021 104 Int. J. Appl. Earth Obs. Geoinformation https://doi.org/10.1016/j.jag.2021.102571 db/journals/aeog/aeog104.html#LiZLFSSZ21

Oliver Fritz Michael Auer Alexander Zipf Entwicklung eines Regressionsmodells für die Vollständigkeitsanalyse des globalen OpenStreetMap- Datenbestands an Nahverkehrs-Busstrecken / Development of a Regression Model for the Analysis of Local Bus Route Data Completeness on OpenStreetMap. 239-248 2021 7 AGIT Journal Angew. Geoinformatik https://doi.org/10.14627/537707025 db/journals/agit/agit7.html#FritzAZ21

Xuke Hu Alexey Noskov Hongchao Fan Tessio Novack Hao Li 0019 Fuqiang Gu Jianga Shang Alexander Zipf Tagging the main entrances of public buildings based on OpenStreetMap and binary imbalanced learning. 1773-1801 2021 35 Int. J. Geogr. Inf. Sci. 9 https://doi.org/10.1080/13658816.2020.1861282 db/journals/gis/gis35.html#HuNFNLGSZ21

Carolin Klonner Maximilian Hartmann Rebecca Dischl Lily Djami Liana O. Anderson Martin Raifer Fernanda Lima-Silva Lívia Castro Degrossi Alexander Zipf João Porto de Albuquerque The Sketch Map Tool Facilitates the Assessment of OpenStreetMap Data for Participatory Mapping. 130 2021 10 ISPRS Int. J. Geo Inf. 3 https://doi.org/10.3390/ijgi10030130 https://www.wikidata.org/entity/Q114293012 db/journals/ijgi/ijgi10.html#KlonnerHDDARLDZ21

Moritz Schott Asher Yair Grinberger Sven Lautenbach Alexander Zipf The Impact of Community Happenings in OpenStreetMap - Establishing a Framework for Online Community Member Activity Analyses. 164 2021 10 ISPRS Int. J. Geo Inf. 3 https://doi.org/10.3390/ijgi10030164 https://www.wikidata.org/entity/Q106118096 db/journals/ijgi/ijgi10.html#SchottGLZ21

Christina Ludwig Robert Hecht Sven Lautenbach Martin Schorcht Alexander Zipf Mapping Public Urban Green Spaces Based on OpenStreetMap and Sentinel-2 Imagery Using Belief Functions. 251 2021 10 ISPRS Int. J. Geo Inf. 4 https://doi.org/10.3390/ijgi10040251 db/journals/ijgi/ijgi10.html#LudwigHLSZ21

Raphael Witt Lukas Loos Alexander Zipf Analysing the Impact of Large Data Imports in OpenStreetMap. 528 2021 10 ISPRS Int. J. Geo Inf. 8 https://doi.org/10.3390/ijgi10080528 db/journals/ijgi/ijgi10.html#WittLZ21

Xuke Hu Hongchao Fan Alexey Noskov Zhiyong Wang 0004 Alexander Zipf Fuqiang Gu Jianga Shang Room semantics inference using random forest and relational graph convolutional networks: A case study of research building. 71-111 2021 25 Trans. GIS 1 https://doi.org/10.1111/tgis.12664 db/journals/tgis/tgis25.html#HuFNWZGS21

Christina Ludwig Sascha Fendrich Alexander Zipf Regional variations of context-based association rules in OpenStreetMap. 602-621 2021 25 Trans. GIS 2 https://doi.org/10.1111/tgis.12694 db/journals/tgis/tgis25.html#LudwigFZ21

Asher Yair Grinberger Moritz Schott Martin Raifer Alexander Zipf An analysis of the spatial and temporal distribution of large-scale data production events in OpenStreetMap. 622-641 2021 25 Trans. GIS 2 https://doi.org/10.1111/tgis.12746 https://www.wikidata.org/entity/Q106118095 db/journals/tgis/tgis25.html#GrinbergerSRZ21

Zhiyong Wang 0004 Tessio Novack Yingwei Yan Alexander Zipf Quiet Route Planning for Pedestrians in Traffic Noise Polluted Environments. 7573-7584 2021 22 IEEE Trans. Intell. Transp. Syst. 12 https://doi.org/10.1109/TITS.2020.3004660 db/journals/tits/tits22.html#WangNYZ21

Isabell G. Klipper Alexander Zipf Sven Lautenbach Flood Impact Assessment on Road Network and Healthcare Access at the example of Jakarta, Indonesia. 4 2021 AGILE Conf. https://doi.org/10.5194/agile-giss-2-4-2021 conf/agile/2021 db/conf/agile/agile2021.html#KlipperZL21 Josephine Brückner Moritz Schott Alexander Zipf Sven Lautenbach Assessing shop completeness in OpenStreetMap for two federal states in Germany. 20 2021 AGILE Conf. https://doi.org/10.5194/agile-giss-2-20-2021 conf/agile/2021 db/conf/agile/agile2021.html#BrucknerSZL21 Jan Pisl Hao Li 0019 Sven Lautenbach Benjamin Herfort Alexander Zipf Detecting OpenStreetMap missing buildings by transferring pre-trained deep neural networks. 39 2021 AGILE Conf. https://doi.org/10.5194/agile-giss-2-39-2021 conf/agile/2021 db/conf/agile/agile2021.html#Pisl0LHZ21 Christina Ludwig Sven Lautenbach Eva-Marie Schömann Alexander Zipf Comparison of Simulated Fast and Green Routes for Cyclists and Pedestrians. 3:1-3:15 2021 GIScience (II) https://doi.org/10.4230/LIPIcs.GIScience.2021.II.3 conf/giscience/2021-2 db/conf/giscience/giscience2021-2.html#LudwigLSZ21 Hao Li 0019 Johannes Zech Christina Ludwig Sascha Fendrich Aurélie Shapiro Michael Schultz Alexander Zipf Automatic mapping of national surface water with OpenStreetMap and Sentinel-2 MSI data using deep learning [Research Data]. 2021 October https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/DATA/AAKAF9&version=1.0 heiDATA streams/repo/heidata data/11/LiZLFSSZ21a

Xuke Hu Lei Ding Jianga Shang Hongchao Fan Tessio Novack Alexey Noskov Alexander Zipf Data-driven approach to learning salience models of indoor landmarks by using genetic programming. 1230-1257 2020 13 Int. J. Digit. Earth 11 https://doi.org/10.1080/17538947.2019.1701109 https://www.wikidata.org/entity/Q126395064 db/journals/digearth/digearth13.html#HuDSFNNZ20

Yingwei Yan Chen-Chieh Feng Wei Huang 0014 Hongchao Fan Yi-Chen Wang Alexander Zipf Volunteered geographic information research in the first decade: a narrative review of selected journal articles in GIScience. 1765-1791 2020 34 Int. J. Geogr. Inf. Sci. 9 https://doi.org/10.1080/13658816.2020.1730848 db/journals/gis/gis34.html#YanFHFWZ20

Tessio Novack Leonard Vorbeck Heinrich Lorei Alexander Zipf Towards Detecting Building Facades with Graffiti Artwork Based on Street View Images. 98 2020 9 ISPRS Int. J. Geo Inf. 2 https://doi.org/10.3390/ijgi9020098 db/journals/ijgi/ijgi9.html#NovackVLZ20

Hao Li 0019 Pedram Ghamisi Behnood Rasti Zhaoyan Wu Aurélie Shapiro Michael Schultz Alexander Zipf A Multi-Sensor Fusion Framework Based on Coupled Residual Convolutional Neural Networks. 2067 2020 12 Remote. Sens. 12 https://doi.org/10.3390/rs12122067 db/journals/remotesensing/remotesensing12.html#LiGRWSSZ20

Alexander Zipf Leveraging User Generated Geoinformation for Humanitarian Aid: Potentials and Challenges. 5 2020 GISTAM conf/gistam/2020 db/conf/gistam/gistam2020.html#Zipf20 Christina Ludwig Robert Hecht Sven Lautenbach Martin Schorcht Alexander Zipf Mapping Public Urban Green Spaces based on OpenStreetMap and Sentinel-2 imagery using Belief Functions: Data and Source Code. 2020 December https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/data/UYSAA5&version=1.0 heiDATA streams/repo/heidata

Yingwei Yan Michael Schultz Alexander Zipf An exploratory analysis of usability of Flickr tags for land use/land cover attribution. 12-22 2019 22 Geo spatial Inf. Sci. 1 https://doi.org/10.1080/10095020.2018.1560044 https://www.wikidata.org/entity/Q125945131 db/journals/gsis/gsis22.html#YanSZ19

Xuke Hu Hongchao Fan Alexey Noskov Alexander Zipf Zhiyong Wang 0004 Jianga Shang Feasibility of Using Grammars to Infer Room Semantics. 1535 2019 11 Remote. Sens. 13 https://doi.org/10.3390/rs11131535 https://www.wikidata.org/entity/Q127610467 db/journals/remotesensing/remotesensing11.html#HuFNZWS19

Benjamin Herfort Hao Li 0019 Sascha Fendrich Sven Lautenbach Alexander Zipf Mapping Human Settlements with Higher Accuracy and Less Volunteer Efforts by Combining Crowdsourcing and Deep Learning. 1799 2019 11 Remote. Sens. 15 https://doi.org/10.3390/rs11151799 db/journals/remotesensing/remotesensing11.html#HerfortLFLZ19

Jiaoyan Chen 0001 Yan Zhou Alexander Zipf Hongchao Fan Deep Learning From Multiple Crowds: A Case Study of Humanitarian Mapping. 1713-1722 2019 57 IEEE Trans. Geosci. Remote. Sens. 3 https://doi.org/10.1109/TGRS.2018.2868748 https://www.wikidata.org/entity/Q129163655 db/journals/tgrs/tgrs57.html#ChenZZF19

Michael Auer Melanie Eckle Sascha Fendrich Fabian Kowatsch Lukas Loos Sabrina Marx Martin Raifer Moritz Schott Rafael Troilo Alexander Zipf Ohsome - eine Plattform zur Analyse raumzeitlicher Entwicklungen von OpenStreetMap-Daten für intrinsische QualitätsbewertungenOhsome - An OpenStreetMap History Analytics Platform for Intrinsic Quality Assessments. 162-167 2018 4 AGIT Journal Angew. Geoinformatik https://doi.org/10.14627/537647020 db/journals/agit/agit4.html#AuerEFKLMRSTZ18

Ming Li 0032 René Westerholt Hongchao Fan Alexander Zipf Assessing spatiotemporal predictability of LBSN: a case study of three Foursquare datasets. 541-561 2018 22 GeoInformatica 3 https://doi.org/10.1007/s10707-016-0279-5 https://www.wikidata.org/entity/Q131520999 db/journals/geoinformatica/geoinformatica22.html#LiWFZ18

Yingwei Yan Chiao-Ling Kuo Chen-Chieh Feng Wei Huang 0014 Hongchao Fan Alexander Zipf Coupling maximum entropy modeling with geotagged social media data to determine the geographic distribution of tourists. 1699-1736 2018 32 Int. J. Geogr. Inf. Sci. 9 https://doi.org/10.1080/13658816.2018.1458989 https://www.wikidata.org/entity/Q60400095 db/journals/gis/gis32.html#YanKFHFZ18

Ming Li 0032 René Westerholt Alexander Zipf Do people communicate about their whereabouts? Investigating the relation between user-generated text messages and Foursquare check-in places. 159-172 2018 21 Geo spatial Inf. Sci. 3 https://doi.org/10.1080/10095020.2018.1498669 https://www.wikidata.org/entity/Q129205658 db/journals/gsis/gsis21.html#0032WZ18

Amin Mobasheri Alexander Zipf Louise Francis OpenStreetMap data quality enrichment through awareness raising and collective action tools - experiences from a European project. 234-246 2018 21 Geo spatial Inf. Sci. 3 https://doi.org/10.1080/10095020.2018.1493817 https://www.wikidata.org/entity/Q73168151 db/journals/gsis/gsis21.html#MobasheriZF18

Stefan Hahmann Jakob Miksch Bernd Resch Johannes Lauer Alexander Zipf Routing through open spaces - A performance comparison of algorithms. 247-256 2018 21 Geo spatial Inf. Sci. 3 https://doi.org/10.1080/10095020.2017.1399675 https://www.wikidata.org/entity/Q57724684 db/journals/gsis/gsis21.html#HahmannMRLZ18

Tessio Novack Robin Peters Alexander Zipf Graph-Based Matching of Points-of-Interest from Collaborative Geo-Datasets. 2018 7 ISPRS Int. J. Geo Inf. 3 https://doi.org/10.3390/ijgi7030117 https://www.wikidata.org/entity/Q55810280 db/journals/ijgi/ijgi7.html#NovackPZ18 117

Chiao-Ling Kuo Ta-Chien Chan I-Chun Fan Alexander Zipf Efficient Method for POI/ROI Discovery Using Flickr Geotagged Photos. 2018 7 ISPRS Int. J. Geo Inf. 3 https://doi.org/10.3390/ijgi7030121 https://www.wikidata.org/entity/Q55810279 db/journals/ijgi/ijgi7.html#KuoCFZ18 121

Michael Auer Alexander Zipf 3D WebGIS: From Visualization to Analysis. An Efficient Browser-Based 3D Line-of-Sight Analysis. 279 2018 7 ISPRS Int. J. Geo Inf. 7 https://doi.org/10.3390/ijgi7070279 https://www.wikidata.org/entity/Q55810278 db/journals/ijgi/ijgi7.html#AuerZ18

Stefan Scholz Paul Knight Melanie Eckle Sabrina Marx Alexander Zipf Volunteered Geographic Information for Disaster Risk Reduction - The Missing Maps Approach and Its Potential within the Red Cross and Red Crescent Movement. 1239 2018 10 Remote. Sens. 8 https://doi.org/10.3390/rs10081239 https://www.wikidata.org/entity/Q73186542 db/journals/remotesensing/remotesensing10.html#ScholzKEMZ18

Amin Mobasheri Haosheng Huang Lívia Castro Degrossi Alexander Zipf Enrichment of OpenStreetMap Data Completeness with Sidewalk Geometries Using Data Mining Techniques. 509 2018 18 Sensors 2 https://doi.org/10.3390/s18020509 https://www.wikidata.org/entity/Q50107565 db/journals/sensors/sensors18.html#MobasheriHDZ18

Tessio Novack Zhiyong Wang 0004 Alexander Zipf A System for Generating Customized Pleasant Pedestrian Routes Based on OpenStreetMap Data. 3794 2018 18 Sensors 11 https://doi.org/10.3390/s18113794 https://www.wikidata.org/entity/Q58608909 db/journals/sensors/sensors18.html#NovackWZ18

Lívia Castro Degrossi João Porto de Albuquerque Roberto dos Santos Rocha Alexander Zipf A taxonomy of quality assessment methods for volunteered and crowdsourced geographic information. 542-560 2018 22 Trans. GIS 2 https://doi.org/10.1111/tgis.12329 https://www.wikidata.org/entity/Q55347928 db/journals/tgis/tgis22.html#DegrossiARZ18

René Westerholt Mathias Gröbe Alexander Zipf Dirk Burghardt Towards the Statistical Analysis and Visualization of Places (Short Paper). 63:1-63:7 2018 GIScience https://doi.org/10.4230/LIPIcs.GISCIENCE.2018.63 https://www.wikidata.org/entity/Q123760490 conf/giscience/2018 db/conf/giscience/giscience2018.html#WesterholtGZB18 Michael Auer Melanie Eckle Sascha Fendrich Luisa Griesbaum Fabian Kowatsch Sabrina Marx Martin Raifer Moritz Schott Rafael Troilo Alexander Zipf Towards Using the Potential of OpenStreetMap History for Disaster Activation Monitoring. 2018 ISCRAM http://idl.iscram.org/files/michaelauer/2018/1558_MichaelAuer_etal2018.pdf conf/iscram/2018 db/conf/iscram/iscram2018.html#AuerEFGKMRSTZ18

Michael Schultz Janek Voss Michael Auer Sarah Carter Alexander Zipf Open land cover from OpenStreetMap and remote sensing. 206-213 2017 63 Int. J. Appl. Earth Obs. Geoinformation https://doi.org/10.1016/j.jag.2017.07.014 https://www.wikidata.org/entity/Q73140709 db/journals/aeog/aeog63.html#SchultzVACZ17

Janek Voss Michael Auer Michael Schultz Alexander Zipf Einsatz von OpenStreetMap-Daten zur Erstellung von Landnutzungsprodukten am Beispiel von OSM Landuse Landcover. 79-87 2017 3 AGIT Journal Angew. Geoinformatik https://doi.org/10.14627/537633009 db/journals/agit/agit3.html#VossASZ17

Hongchao Fan Alexander Zipf Hangbin Wu Detecting repetitive structures on building footprints for the purposes of 3D modeling and reconstruction. 785-797 2017 10 Int. J. Digit. Earth 8 https://doi.org/10.1080/17538947.2016.1252433 db/journals/digearth/digearth10.html#FanZW17

Clemens Jacobs Alexander Zipf Completeness of citizen science biodiversity data from a volunteered geographic information perspective. 3-13 2017 20 Geo spatial Inf. Sci. 1 https://doi.org/10.1080/10095020.2017.1288424 https://www.wikidata.org/entity/Q73168132 db/journals/gsis/gsis20.html#JacobsZ17

Franz-Benjamin Mocnik Alexander Zipf Martin Raifer The OpenStreetMap folksonomy and its evolution. 219-230 2017 20 Geo spatial Inf. Sci. 3 https://doi.org/10.1080/10095020.2017.1368193 https://www.wikidata.org/entity/Q55835907 db/journals/gsis/gsis20.html#MocnikZR17

Luisa Griesbaum Melanie Eckle Benjamin Herfort Martin Raifer Alexander Zipf Partizipative Methoden zur Erfassung und Verarbeitung von Geoinformationen. 563-574 2017 54 HMD Prax. Wirtsch. 4 https://doi.org/10.1365/s40702-017-0331-4 https://www.wikidata.org/entity/Q59528294 db/journals/hmd/hmd54.html#GriesbaumEHRZ17

Adam Rousell Alexander Zipf Towards a Landmark-Based Pedestrian Navigation Service Using OSM Data. 64 2017 6 ISPRS Int. J. Geo Inf. 3 https://doi.org/10.3390/ijgi6030064 https://www.wikidata.org/entity/Q55810282 db/journals/ijgi/ijgi6.html#RousellZ17

Yingwei Yan Melanie Eckle Chiao-Ling Kuo Benjamin Herfort Hongchao Fan Alexander Zipf Monitoring and Assessing Post-Disaster Tourism Recovery Using Geotagged Social Media Data. 144 2017 6 ISPRS Int. J. Geo Inf. 5 https://doi.org/10.3390/ijgi6050144 https://www.wikidata.org/entity/Q55810281 db/journals/ijgi/ijgi6.html#YanEKHFZ17

David Jonietz Vyron Antoniou Linda See Alexander Zipf Highlighting Current Trends in Volunteered Geographic Information. 202 2017 6 ISPRS Int. J. Geo Inf. 7 https://doi.org/10.3390/ijgi6070202 https://www.wikidata.org/entity/Q73184931 db/journals/ijgi/ijgi6.html#JonietzASZ17

Wei Huang 0014 Hongchao Fan Alexander Zipf Towards Detecting the Crowd Involved in Social Events. 305 2017 6 ISPRS Int. J. Geo Inf. 10 https://doi.org/10.3390/ijgi6100305 db/journals/ijgi/ijgi6.html#HuangFZ17

Lívia Castro Degrossi João Porto de Albuquerque Camilo Ernesto Restrepo-Estrada Amin Mobasheri Alexander Zipf Exploring the geographical context for quality assessment of VGI in flood management domain. 2017 AMCIS http://aisel.aisnet.org/amcis2017/DataScience/Presentations/6 conf/amcis/2017 db/conf/amcis/amcis2017.html#DegrossiARMZ17 Lívia Castro Degrossi João Porto de Albuquerque Roberto dos Santos Rocha Alexander Zipf A Framework of Quality Assessment Methods for Crowdsourced Geographic Information: a Systematic Literature Review. 2017 ISCRAM http://idl.iscram.org/files/liviacastrodegrossi/2017/1487_LiviaCastroDegrossi_etal2017.pdf conf/iscram/2017 db/conf/iscram/iscram2017.html#DegrossiARZ17 Melanie Eckle Benjamin Herfort Yingwei Yan Chiao-Ling Kuo Alexander Zipf Towards using Volunteered Geographic Information to monitor post-disaster recovery in tourist destinations. 2017 ISCRAM http://idl.iscram.org/files/melanieeckle/2017/1530_MelanieEckle_etal2017.pdf conf/iscram/2017 db/conf/iscram/iscram2017.html#EckleHYKZ17 Jiaoyan Chen 0001 Alexander Zipf DeepVGI: Deep Learning with Volunteered Geographic Information. 771-772 2017 WWW (Companion Volume) https://doi.org/10.1145/3041021.3054250 https://www.wikidata.org/entity/Q130902701 conf/www/2017c db/conf/www/www2017c.html#ChenZ17

Michael Auer Lukas Loos Alexander Zipf MayaArch3D - webbasierte archäologische 3D-Visualisierung und Analyse. 25-29 2016 2 AGIT Journal Angew. Geoinformatik https://doi.org/10.14627/537622004 db/journals/agit/agit2.html#AuerLZ16

Enrico Steiger Maksim Rylov Alexander Zipf Echtzeitverkehrslage basierend auf OSM-Daten im OpenRouteService. 264-267 2016 2 AGIT Journal Angew. Geoinformatik https://doi.org/10.14627/537622038 db/journals/agit/agit2.html#SteigerRZ16

Stefan Hahmann Alexander Zipf Adam Rousell Amin Mobasheri Lukas Loos Maxim A. Rylov Enrico Steiger Johannes Lauer GIS-Werkzeuge zur Verbesserung der barrierefreien Routenplanung aus dem Projekt CAP4Access. 328-333 2016 2 AGIT Journal Angew. Geoinformatik https://doi.org/10.14627/537622047 db/journals/agit/agit2.html#HahmannZRMLRSL16

Melanie Eckle João Porto de Albuquerque Benjamin Herfort Alexander Zipf Entscheidungsunterstützung im Hochwassermanagement - Integration von Kritischer Infrastruktur und Notfallrouting auf der Basis freier Geodaten. 412-417 2016 2 AGIT Journal Angew. Geoinformatik https://doi.org/10.14627/537622056 db/journals/agit/agit2.html#EckleAHZ16

Hongchao Fan Bisheng Yang Alexander Zipf Adam Rousell A polygon-based approach for matching OpenStreetMap road networks with regional transit authority data. 748-764 2016 30 Int. J. Geogr. Inf. Sci. 4 https://doi.org/10.1080/13658816.2015.1100732 db/journals/gis/gis30.html#FanYZR16

Enrico Steiger Bernd Resch Alexander Zipf Exploration of spatiotemporal and semantic clusters of Twitter data using unsupervised neural networks. 1694-1716 2016 30 Int. J. Geogr. Inf. Sci. 9 https://doi.org/10.1080/13658816.2015.1099658 db/journals/gis/gis30.html#SteigerRZ16

Anran Yang Hongchao Fan Ning Jing Yeran Sun Alexander Zipf Temporal Analysis on Contribution Inequality in OpenStreetMap: A Comparative Study for Four Countries. 2016 5 ISPRS Int. J. Geo Inf. 1 https://doi.org/10.3390/ijgi5010005 https://www.wikidata.org/entity/Q59388258 db/journals/ijgi/ijgi5.html#YangFJSZ16 5

Ahmed Loai Ali Nuttha Sirilertworakul Alexander Zipf Amin Mobasheri Guided Classification System for Conceptual Overlapping Classes in OpenStreetMap. 2016 5 ISPRS Int. J. Geo Inf. 6 https://doi.org/10.3390/ijgi5060087 https://www.wikidata.org/entity/Q73184905 db/journals/ijgi/ijgi5.html#AliSZM16 87

David Jonietz Alexander Zipf Defining Fitness-for-Use for Crowdsourced Points of Interest (POI). 149 2016 5 ISPRS Int. J. Geo Inf. 9 https://doi.org/10.3390/ijgi5090149 https://www.wikidata.org/entity/Q73184909 db/journals/ijgi/ijgi5.html#JonietzZ16

Paulo Dias Almeida Jorge Gustavo Rocha Andrea Ballatore Alexander Zipf Where the Streets Have Known Names. 1-12 2016 ICCSA (4) https://doi.org/10.1007/978-3-319-42089-9_1 https://www.wikidata.org/entity/Q41004782 conf/iccsa/2016-4 db/conf/iccsa/iccsa2016-4.html#AlmeidaRBZ16 Melanie Eckle João Porto de Albuquerque Benjamin Herfort Alexander Zipf Richard Leiner Rüdiger Wolff Clemens Jacobs Leveraging OpenStreetMap to Support Flood Risk Management in Municipalities: A Prototype Decision Support System. 2016 ISCRAM http://idl.iscram.org/files/melanieeckle/2016/1335_MelanieEckle_etal2016.pdf conf/iscram/2016 db/conf/iscram/iscram2016.html#EckleAHZLWJ16 Jennifer von Schwerin Mike Lyons Lukas Loos Nicolas Billen Michael Auer Alexander Zipf Show Me the Data!: Structuring Archaeological Data to Deliver Interactive, Transparent 3D Reconstructions in a 3D WebGIS. 198-230 2016 3D Research Challenges in Cultural Heritage https://doi.org/10.1007/978-3-319-47647-6_10 series/lncs/10025 db/series/lncs/lncs10025.html#SchwerinLLBAZ16

Enrico Steiger Alexander Zipf Erstellung eines OSM-Straßengraphen mit TMC-LCL-Informationen. 426-431 2015 1 AGIT Journal Angew. Geoinformatik https://doi.org/10.14627/537557059 db/journals/agit/agit1.html#SteigerZ15

João Porto de Albuquerque Benjamin Herfort Alexander Brenning Alexander Zipf A geographic approach for combining social media and authoritative data towards identifying useful information for disaster management. 667-689 2015 29 Int. J. Geogr. Inf. Sci. 4 https://doi.org/10.1080/13658816.2014.996567 https://www.wikidata.org/entity/Q73168734 db/journals/gis/gis29.html#AlbuquerqueHBZ15

René Westerholt Bernd Resch Alexander Zipf A local scale-sensitive indicator of spatial autocorrelation for assessing high- and low-value clusters in multiscale datasets. 868-887 2015 29 Int. J. Geogr. Inf. Sci. 5 https://doi.org/10.1080/13658816.2014.1002499 https://www.wikidata.org/entity/Q57724690 db/journals/gis/gis29.html#WesterholtRZ15

Helen Dorn Tobias Törnros Alexander Zipf Quality Evaluation of VGI Using Authoritative Data - A Comparison with Land Use Data in Southern Germany. 1657-1671 2015 4 ISPRS Int. J. Geo Inf. 3 https://doi.org/10.3390/ijgi4031657 https://www.wikidata.org/entity/Q73184890 db/journals/ijgi/ijgi4.html#DornTZ15

Enrico Steiger João Porto de Albuquerque Alexander Zipf An Advanced Systematic Literature Review on Spatiotemporal Analyses of Twitter Data. 809-834 2015 19 Trans. GIS 6 https://doi.org/10.1111/tgis.12132 db/journals/tgis/tgis19.html#SteigerAZ15

Jamal Jokar Arsanjani Peter Mooney Marco Helbich Alexander Zipf An Exploration of Future Patterns of the Contributions to OpenStreetMap and Development of a Contribution Index. 896-914 2015 19 Trans. GIS 6 https://doi.org/10.1111/tgis.12139 https://www.wikidata.org/entity/Q73174894 db/journals/tgis/tgis19.html#ArsanjaniMHZ15

Yeran Sun Hongchao Fan Mohamed Bakillah Alexander Zipf Road-based travel recommendation using geo-tagged images. 110-122 2015 53 Comput. Environ. Urban Syst. https://doi.org/10.1016/j.compenvurbsys.2013.07.006 https://www.wikidata.org/entity/Q59388261 db/journals/urban/urban53.html#SunFBZ15

Enrico Steiger René Westerholt Bernd Resch Alexander Zipf Twitter as an indicator for whereabouts of people? Correlating Twitter with UK census data. 255-265 2015 54 Comput. Environ. Urban Syst. https://doi.org/10.1016/j.compenvurbsys.2015.09.007 db/journals/urban/urban54.html#SteigerWRZ15

Andrea Ballatore Alexander Zipf A Conceptual Quality Framework for Volunteered Geographic Information. 89-107 2015 COSIT https://doi.org/10.1007/978-3-319-23374-1_5 conf/cosit/2015 db/conf/cosit/cosit2015.html#BallatoreZ15 Benjamin Herfort Melanie Eckle João Porto de Albuquerque Alexander Zipf Towards assessing the quality of volunteered geographic information from OpenStreetMap for identifying critical infrastructures. 2015 ISCRAM http://idl.iscram.org/files/benjaminherfort/2015/1313_BenjaminHerfort_etal2015.pdf conf/iscram/2015 db/conf/iscram/iscram2015.html#HerfortEAZ15 Jamal Jokar Arsanjani Alexander Zipf Peter Mooney Marco Helbich An Introduction to OpenStreetMap in Geographic Information Science: Experiences, Research, and Applications. 1-15 2015 OpenStreetMap in GIScience https://doi.org/10.1007/978-3-319-14280-7_1 https://www.wikidata.org/entity/Q124145574 series/lngc/osm2015 db/series/lngc/osm2015.html#ArsanjaniZMH15 Jamal Jokar Arsanjani Peter Mooney Alexander Zipf Anne Schauss Quality Assessment of the Contributed Land Use Information from OpenStreetMap Versus Authoritative Datasets. 37-58 2015 OpenStreetMap in GIScience https://doi.org/10.1007/978-3-319-14280-7_3 https://www.wikidata.org/entity/Q132657021 series/lngc/osm2015 db/series/lngc/osm2015.html#ArsanjaniMZS15 Jamal Jokar Arsanjani Alexander Zipf Peter Mooney Marco Helbich OpenStreetMap in GIScience - Experiences, Research, and Applications Springer 2015 Lecture Notes in Geoinformation and Cartography 978-3-319-14279-1 https://doi.org/10.1007/978-3-319-14280-7 https://www.wikidata.org/entity/Q123762612 db/series/lngc/osm2015.html

Hongchao Fan Alexander Zipf Qing Fu Pascal Neis Quality assessment for building footprints data on OpenStreetMap. 700-719 2014 28 Int. J. Geogr. Inf. Sci. 4 https://doi.org/10.1080/13658816.2013.867495 db/journals/gis/gis28.html#FanZFN14

Mohamed Bakillah Steve H. L. Liang Amin Mobasheri Jamal Jokar Arsanjani Alexander Zipf Fine-resolution population mapping using OpenStreetMap points-of-interest. 1940-1963 2014 28 Int. J. Geogr. Inf. Sci. 9 https://doi.org/10.1080/13658816.2014.909045 https://www.wikidata.org/entity/Q73168733 db/journals/gis/gis28.html#BakillahLMAZ14

John P. Wilson Qiming Zhou Alexander Zipf Taking Stock. 793-798 2014 18 Trans. GIS 6 https://doi.org/10.1111/tgis.12120 db/journals/tgis/tgis18.html#WilsonZZ14

Christopher Barron Pascal Neis Alexander Zipf A Comprehensive Framework for Intrinsic OpenStreetMap Quality Analysis. 877-895 2014 18 Trans. GIS 6 https://doi.org/10.1111/tgis.12073 https://www.wikidata.org/entity/Q73174884 db/journals/tgis/tgis18.html#BarronNZ14

Hongchao Fan Alexander Zipf Qing Fu Estimation of Building Types on OpenStreetMap Based on Urban Morphology Analysis. 19-35 2014 AGILE Conf. https://doi.org/10.1007/978-3-319-03611-3_2 conf/agile/2014 db/conf/agile/agile2014.html#FanZF14 Benjamin Herfort João Porto de Albuquerque Svend-Jonas Schelhorn Alexander Zipf Exploring the Geographical Relations Between Social Media and Flood Phenomena to Improve Situational Awareness - A Study About the River Elbe Flood in June 2013. 55-71 2014 AGILE Conf. https://doi.org/10.1007/978-3-319-03611-3_4 https://www.wikidata.org/entity/Q73121746 conf/agile/2014 db/conf/agile/agile2014.html#HerfortASZ14 Enrico Steiger Timothy Ellersiek Alexander Zipf Explorative public transport flow analysis from uncertain social media data. 1-7 2014 GEOGROWD https://doi.org/10.1145/2676440.2676444 https://www.wikidata.org/entity/Q130902836 conf/gis/2014geocrowd db/conf/gis/geocrowd2014.html#SteigerEZ14 Johannes Lauer Ludwig Richter Timothy Ellersiek Alexander Zipf TeleAgro+: analysis framework for agricultural telematics data. 47-53 2014 IWCTS@SIGSPATIAL https://doi.org/10.1145/2674918.2674925 conf/gis/2014cts db/conf/gis/cts2014.html#LauerREZ14 Benjamin Herfort João Porto de Albuquerque Svend-Jonas Schelhorn Alexander Zipf Does the spatiotemporal distribution of tweets match the spatiotemporal distribution of flood phenomena? A study about the River Elbe Flood in June 2013. 2014 ISCRAM http://idl.iscram.org/files/herfort/2014/572_Herfort_etal2014.pdf conf/iscram/2014 db/conf/iscram/iscram2014.html#HerfortASZ14 Svend-Jonas Schelhorn Benjamin Herfort Richard Leiner Alexander Zipf João Porto de Albuquerque Identifying elements at risk from OpenStreetMap: The case of flooding. 2014 ISCRAM http://idl.iscram.org/files/schelhorn/2014/920_Schelhorn_etal2014.pdf conf/iscram/2014 db/conf/iscram/iscram2014.html#SchelhornHLZA14

Pascal Neis Dennis Zielstra Alexander Zipf Comparison of Volunteered Geographic Information Data Contributions and Community Development for Selected World Regions. 282-300 2013 5 Future Internet 2 https://doi.org/10.3390/fi5020282 db/journals/fi/fi5.html#NeisZZ13

Jamal Jokar Arsanjani Marco Helbich Mohamed Bakillah Julian Hagenauer Alexander Zipf Toward mapping land-use patterns from volunteered geographic information. 2264-2278 2013 27 Int. J. Geogr. Inf. Sci. 12 https://doi.org/10.1080/13658816.2013.800871 https://www.wikidata.org/entity/Q73168721 db/journals/gis/gis27.html#ArsanjaniHBHZ13

Mohamed Bakillah Steve H. L. Liang Alexander Zipf Jamal Jokar Arsanjani Semantic Interoperability of Sensor Data with Volunteered Geographic Information: A Unified Model. 766-796 2013 2 ISPRS Int. J. Geo Inf. 3 https://doi.org/10.3390/ijgi2030766 https://www.wikidata.org/entity/Q73184866 db/journals/ijgi/ijgi2.html#BakillahLZA13

Mohamed Bakillah Steve H. L. Liang Alexander Zipf Mir Abolfazl Mostafavi A dynamic and context-aware semantic mediation service for discovering and fusion of heterogeneous sensor data. 155-185 2013 6 J. Spatial Inf. Sci. 1 https://doi.org/10.5311/JOSIS.2013.6.104 db/journals/josis/josis6.html#BakillahLZM13

John P. Wilson David O'Sullivan Alexander Zipf Taking Stock. 785-790 2013 17 Trans. GIS 6 https://doi.org/10.1111/tgis.12065 db/journals/tgis/tgis17.html#WilsonOZ13

Mohamed Bakillah Alexander Zipf Steve H. L. Liang Publish/Subscribe System Based on Event Calculus to Support Real-Time Multi-Agent Evacuation Simulation. 337-352 2013 AGILE Conf. https://doi.org/10.1007/978-3-319-00615-4_19 conf/agile/2013 db/conf/agile/agile2013.html#BakillahZL13 Flávio Eduardo Aoki Horita Lívia Castro Degrossi Luiz Fernando Ferreira Gomes de Assis Alexander Zipf João Porto de Albuquerque The use of Volunteered Geographic Information (VGI) and Crowdsourcing in Disaster Management: a Systematic Literature Review. 2013 AMCIS http://aisel.aisnet.org/amcis2013/eGovernment/GeneralPresentations/4 conf/amcis/2013 db/conf/amcis/amcis2013.html#HoritaDAZA13 Johannes Lauer Nicolas Billen Alexander Zipf Processing crowd sourced sensor data: from data acquisition to application. 43 2013 CTS@SIGSPATIAL https://doi.org/10.1145/2533828.2533839 https://www.wikidata.org/entity/Q130904636 conf/gis/2013cts db/conf/gis/cts2013.html#LauerBZ13 Nicolas Billen Johannes Lauer Alexander Zipf A mobile sensor data acquisition and evaluation framework for crowd sourcing data. 47-54 2013 GEOGROWD https://doi.org/10.1145/2534732.2534740 https://www.wikidata.org/entity/Q130904875 conf/gis/2013geocrowd db/conf/gis/geocrowd2013.html#BillenLZ13 Yeran Sun Hongchao Fan Marco Helbich Alexander Zipf Analyzing Human Activities Through Volunteered Geographic Information: Using Flickr to Analyze Spatial and Temporal Pattern of Tourist Accommodation. 57-69 2013 Progress in Location-Based Services https://doi.org/10.1007/978-3-642-34203-5_4 https://www.wikidata.org/entity/Q59388265 series/lngc/2013location db/series/lngc/location2013.html#SunFHZ13 Marcus Goetz Alexander Zipf Indoor Route Planning with Volunteered Geographic Information on a (Mobile) Web-Based Platform. 211-231 2013 Progress in Location-Based Services https://doi.org/10.1007/978-3-642-34203-5_12 series/lngc/2013location db/series/lngc/location2013.html#GoetzZ13 Ming Li 0032 Marcus Goetz Hongchao Fan Alexander Zipf Adapting OSM-3D to the Mobile World: Challenges and Potentials. 471-489 2013 Progress in Location-Based Services https://doi.org/10.1007/978-3-642-34203-5_26 series/lngc/2013location db/series/lngc/location2013.html#LiGFZ13

Pascal Neis Dennis Zielstra Alexander Zipf The Street Network Evolution of Crowdsourced Maps: OpenStreetMap in Germany 2007-2011. 1-21 2012 4 Future Internet 1 https://doi.org/10.3390/fi4010001 https://www.wikidata.org/entity/Q55833033 db/journals/fi/fi4.html#NeisZZ12

Marcus Goetz Alexander Zipf Towards Defining a Framework for the Automatic Derivation of 3D CityGML Models from Volunteered Geographic Information. 1-16 2012 1 Int. J. 3 D Inf. Model. 2 https://doi.org/10.4018/ij3dim.2012040101 db/journals/ij3dim/ij3dim1.html#GoetzZ12

Pascal Neis Alexander Zipf Analyzing the Contributor Activity of a Volunteered Geographic Information Project - The Case of OpenStreetMap. 146-165 2012 1 ISPRS Int. J. Geo Inf. 2 https://doi.org/10.3390/ijgi1020146 https://www.wikidata.org/entity/Q30052113 db/journals/ijgi/ijgi1.html#NeisZ12

Marcus Goetz Alexander Zipf Using Crowdsourced Geodata for Agent-Based Indoor Evacuation Simulations. 186-208 2012 1 ISPRS Int. J. Geo Inf. 2 https://doi.org/10.3390/ijgi1020186 https://www.wikidata.org/entity/Q73184852 db/journals/ijgi/ijgi1.html#GoetzZ12

Pascal Neis Marcus Goetz Alexander Zipf Towards Automatic Vandalism Detection in OpenStreetMap. 315-332 2012 1 ISPRS Int. J. Geo Inf. 3 https://doi.org/10.3390/ijgi1030315 https://www.wikidata.org/entity/Q55833542 db/journals/ijgi/ijgi1.html#NeisGZ12

Mohamed Bakillah Mir Abolfazl Mostafavi Steve H. L. Liang Alexander Zipf Real time query propagation strategies with Lightweight Coordination Calculus (LCC) for ad hoc networks of geospatial databases. 1918-1933 2012 35 J. Netw. Comput. Appl. 6 https://doi.org/10.1016/j.jnca.2012.07.015 db/journals/jnca/jnca35.html#BakillahMLZ12

John P. Wilson David O'Sullivan Alexander Zipf Taking Stock. 735-740 2012 16 Trans. GIS 6 https://doi.org/10.1111/tgis.12004 db/journals/tgis/tgis16.html#WilsonOZ12

Andreas Jochem Bernhard Höfle Volker Wichmann Martin Rutzinger Alexander Zipf Area-wide roof plane segmentation in airborne LiDAR point clouds. 54-64 2012 36 Comput. Environ. Urban Syst. 1 https://doi.org/10.1016/j.compenvurbsys.2011.05.001 https://www.wikidata.org/entity/Q57510826 db/journals/urban/urban36.html#JochemHWRZ12

Lukas Loos Alexander Zipf RIgeo.net - A Lab for Spatial Exploration of Historical Data. 488-490 2012 DH http://www.dh2012.uni-hamburg.de/conference/programme/abstracts/rigeonet-a-lab-for-spatial-exploration-of-historical-data.1.html conf/dihu/2012 db/conf/dihu/dh2012.html#LoosZ12 Alexander Zipf Matthias Jöst Location-Based Services. 417-421 2012 Springer Handbook of Geographic Information https://doi.org/10.1007/978-3-540-72680-7_21 books/daglib/0033306 db/books/collections/KD2012.html#ZipfJ12

Marcus Goetz Alexander Zipf Formal definition of a user-adaptive and length-optimal routing graph for complex indoor environments. 119-128 2011 14 Geo spatial Inf. Sci. 2 https://doi.org/10.1007/s11806-011-0474-3 https://www.wikidata.org/entity/Q55968624 db/journals/gsis/gsis14.html#GoetzZ11

Sandra Lanig Arne Schilling Michael Auer Bernhard Höfle Nicolas Billen Alexander Zipf Interoperable integration of high precision 3D laser data and large scale geoanalysis in a SDI for Sutra inscriptions in Sichuan (China). 79-84 2011 Geoinformatik conf/geoinformatik/2011 db/conf/geoinformatik/geoinformatik2011.html#LanigSAHBZ11

Martin Over Arne Schilling Steffen Neubauer Alexander Zipf Generating web-based 3D City Models from OpenStreetMap: The current situation in Germany. 496-507 2010 34 Comput. Environ. Urban Syst. 6 https://doi.org/10.1016/j.compenvurbsys.2010.05.001 https://www.wikidata.org/entity/Q73139797 db/journals/urban/urban34.html#OverSNZ10

Sandra Lanig Alexander Zipf Martina Klärle Geoprozessîerung in Erneuerbaren Energien. 226-227 2010 Geoinformatik conf/geoinformatik/2010 db/conf/geoinformatik/geoinformatik2010.html#LanigZK10 Alexander Zipf Kai Behncke Florian Hillen Jens Schaefermeyer Geoinformatik 2010 - Die Welt im Netz: Konferenzband, Kiel, Germany, March 17-19, 2010. Geoinformatik AKA 2010 978-3-89838-335-6 http://www.aka-verlag.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=591&virtuemart_category_id=121&Itemid=238 db/conf/geoinformatik/geoinformatik2010.html

Sandra Lanig Alexander Zipf Interoperable processing of digital elevation models in grid infrastructures. 107-116 2009 2 Earth Sci. Informatics 1-2 https://doi.org/10.1007/s12145-009-0030-y db/journals/esi/esi2.html#LanigZ09

Wolfgang Johann Eder Alexander Zipf Towards interoperable atmospheric (air flow) models in Spatial Data Infrastructures using OGC Web Services - state of the art and research questions. 403-412 2009 EnviroInfo (1) http://iai-uiserv1.iai.fzk.de/ictensure/site?mod=litdb&subject=art&pid=LE47846F1&action=detail conf/enviroinfo/2009-1 db/conf/enviroinfo/enviroinfo2009-1.html#EderZ09

Pascal Neis Alexander Zipf Extending the OGC OpenLS Route Service to 3D for an interoperable realisation of 3D focus maps with landmarks. 153-174 2008 2 J. Locat. Based Serv. 2 https://doi.org/10.1080/17489720802400413 https://www.wikidata.org/entity/Q58602945 db/journals/jlbs/jlbs2.html#NeisZ08

Holger Albert Gernot Belger Vinicius de Camargo Michael Haase Kaj Lippert Pascal Neis Erik Pasche Alexander Zipf Interoperable Routing Services in the Context of Evacuation Schemes due to Urban Flooding. 617-622 2008 EnviroInfo http://iai-uiserv1.iai.fzk.de/ictensure/site?mod=litdb&subject=art&pid=LB3EC8F6&action=detail conf/enviroinfo/2008 db/conf/enviroinfo/enviroinfo2008.html#AlbertBCHLNPZ08 Sandra Lanig Arne Schilling Beate Stollberg Alexander Zipf Towards Standards-Based Processing of Digital Elevation Models for Grid Computing through Web Processing Service (WPS). 191-203 2008 ICCSA (2) https://doi.org/10.1007/978-3-540-69848-7_17 conf/iccsa/2008-2 db/conf/iccsa/iccsa2008-2.html#LanigSSZ08 Rüdiger Göbel Alexander Zipf How to Define 3D Geoprocessing Operations for the OGC Web Processing Service (WPS)? Towards a Classification of 3D Operations. 708-723 2008 ICCSA (1) https://doi.org/10.1007/978-3-540-69839-5_52 conf/iccsa/2008-1 db/conf/iccsa/iccsa2008-1.html#GobelZ08 Liqiu Meng Alexander Zipf Stephan Winter 0001 Map-based Mobile Services - Design, Interaction and Usability 2008 Springer Lecture Notes in Geoinformation and Cartography https://doi.org/10.1007/978-3-540-37110-6 978-3-540-37109-0 db/series/lngc/mbms2008.html Beate Stollberg Alexander Zipf OGC Web Processing Service Interface for Web Service Orchestration Aggregating Geo-processing Services in a Bomb Threat Scenario. 239-251 2007 W2GIS https://doi.org/10.1007/978-3-540-76925-5_18 conf/w2gis/2007 db/conf/w2gis/w2gis2007.html#StollbergZ07 Arne Schilling Jens Basanow Alexander Zipf Vector based Mapping of Polygons on Irregular Terrain Meshes for Web 3D Map Services. 198-205 2007 WEBIST (2) conf/webist/2007-2 db/conf/webist/webist2007-2.html#SchillingBZ07 Albrecht Weiser Alexander Zipf A visual editor for OGC SLD files for automating the configuration of WMS and mobile map applications. 265-278 2007 Location Based Services and TeleCartography https://doi.org/10.1007/978-3-540-36728-4_20 series/lngc/2007location db/series/lngc/location2007.html#WeiserZ07

Bin Jiang 0004 Alexander Zipf How do location-based services hit Google? 709-711 2006 30 Comput. Environ. Urban Syst. 6 https://doi.org/10.1016/j.compenvurbsys.2006.02.002 db/journals/urban/urban30.html#JiangZ06

Alexander Zipf Matthias Jöst Implementing adaptive mobile GI services based on ontologies: Examples from pedestrian navigation support. 784-798 2006 30 Comput. Environ. Urban Syst. 6 https://doi.org/10.1016/j.compenvurbsys.2006.02.005 https://www.wikidata.org/entity/Q114671643 db/journals/urban/urban30.html#ZipfJ06

Sven Tschirner Alexander Zipf Finding geodata that otherwise would have been forgotten - GeoXchange: a SDI-based portal for sharing free geodata. 39-44 2005 conf/gir/2005 GIR https://doi.org/10.1145/1096985.1096996 db/conf/gir/gir2005.html#TschirnerZ05 Alexander Zipf Liqiu Meng MOBILE MAPS 2005 interactivity and usability of map-based mobile services. 361-362 2005 conf/mhci/2005 Mobile HCI https://doi.org/10.1145/1085777.1085867 db/conf/mhci/mhci2005.html#ZipfM05 Alexander Zipf Using Styled Layer Descriptor (SLD) for the Dynamic Generation of User- and Context-Adaptive Mobile Maps - A Technical Framework. 183-193 2005 conf/w2gis/2005 W2GIS https://doi.org/10.1007/11599289_16 db/conf/w2gis/w2gis2005.html#Zipf05

Jochen Häußler Alexander Zipf Supporting Multi-Modal Interfaces for Adaptive Tour Planning. 117-128 2004 10 Ann. GIS 2 https://doi.org/10.1080/10824000409480663 https://www.wikidata.org/entity/Q58250820 db/journals/agis/agis10.html#HausslerZ04

Barbara Schmidt-Belz Heimo Laamanen Stefan Poslad Alexander Zipf Location-based Mobile Tourist Services - First User Experiences. 115-123 2003 ENTER https://doi.org/10.1007/978-3-7091-6027-5_13 conf/enter/2003 db/conf/enter/enter2003.html#Schmidt-BelzLPZ03 Alexander Zipf Richard Leiner Anforderungen an mobile Geo-Datenbanken für Katastropheninformations- und -warnsysteme. 9-17 2003 conf/m-dbis/2003 Database Mechanisms for Mobile Applications db/conf/m-dbis/m-dbis2003.html#ZipfL03 https://dl.gi.de/handle/20.500.12116/29328 http://subs.emis.de/LNI/Proceedings/Proceedings43/article1201.html Arne Schilling Alexander Zipf Generation of VRML city models for focus based tour animations: integration, modeling and presentation of heterogeneous geo-data sources. 39-48 2003 conf/vrml/2003 Web3D https://doi.org/10.1145/636593.636599 db/conf/vrml/web3d2003.html#SchillingZ03

Steffen Staab Hannes Werthner Francesco Ricci 0001 Alexander Zipf Ulrike Gretzel Daniel R. Fesenmaier Cécile Paris Craig A. Knoblock Intelligent Systems for Tourism. 53-64 2002 17 IEEE Intell. Syst. 6 https://doi.org/10.1109/MIS.2002.1134362 http://doi.ieeecomputersociety.org/10.1109/MIS.2002.1134362 db/journals/expert/expert17.html#StaabWRZGFPK02

Alexander Zipf Kai-Florian Richter Using Focus Maps to Ease Map Reading - Developing Smart Applications for Mobile Devices. 35-37 2002 16 Künstliche Intell. 4 db/journals/ki/ki16.html#ZipfR02

Alexander Zipf User-Adaptive Maps for Location-Based Services (LBS) for Tourism. 329-338 2002 ENTER https://doi.org/10.1007/978-3-7091-6132-6_34 conf/enter/2002 db/conf/enter/enter2002.html#Zipf02 Stefan Schmitz Alexander Zipf Hidir Aras Realisierung eines mobilen Geodatenservers für PDAs auf der Basis von Standards des OpenGIS-Consortiums. 23-27 2002 conf/mdi/2002 Mobile Datenbanken und Informationssysteme http://wwwiti.cs.uni-magdeburg.de/~hoepfner/m-DBIS_WS_2002/beitraege/SchZipAra02mdbis.ps db/conf/mdi/mdi2002.html#SchmitzZA02 Alexander Zipf Rainer Malaka Developing Location Based Services for Tourism. The Service Providers' View. 83-92 2001 ENTER https://doi.org/10.1007/978-3-7091-6177-7_9 conf/enter/2001 db/conf/enter/enter2001.html#ZipfM01 Alexander Zipf Sven Krüger TGML - extending GML by Temporal Constructs - A Proposal for a Spatiotemporal Framework in XML. 94-99 2001 conf/gis/2001 ACM-GIS db/conf/gis/gis2001.html#ZipfK01 https://doi.org/10.1145/512161.512183 Maciej Adamiak Benedcto Adamu Holger Albert Cristian Albornoz João Porto de Albuquerque Ahmed Loai Ali Paulo Dias Almeida Liana O. Anderson Francis Andorful Vyron Antoniou Hidir Aras Dorian Arifi Jamal Jokar Arsanjani Luiz F. F. G. AssisLuiz Fernando Ferreira Gomes de Assis Michael Auer Eren Aygun Mohamed Bakillah Andrea Ballatore Christopher Barron Jens Basanow Kai Behncke Gernot Belger Nicolas Billen Alexander Brenning Josephine Brückner Dirk Burghardt Amandaus Butzer Vinicius de Camargo Sarah Carter Ta-Chien Chan Jocelyn Chanussot Iddy Chazua Jiaoyan Chen 0001 Gabriel Dax Lívia Castro Degrossi Lei Ding Rebecca Dischl Lily Djami Helen Dorn Melanie Eckle Wolfgang Johann Eder Timothy Ellersiek Yara Elshiaty Camilo Restrepo EstradaCamilo Ernesto Restrepo-Estrada Hongchao Fan I-Chun Fan Sascha Fendrich Chen-Chieh Feng Daniel R. Fesenmaier Kathrin Foshag Louise Francis Oliver Fritz Qing Fu Nir Fulman Johannes Fürle Pedram Ghamisi Rüdiger Göbel Marcus GötzMarcus Goetz Ulrike Gretzel Luisa Griesbaum Asher Yair Grinberger Yulia Grinblat Mathias Gröbe Simon Groß Fuqiang Gu Stefan Gumbrich Michael Haase Julian Hagenauer Stefan Hahmann Maximilian Hartmann Charles Hatfield Jochen Häußler Robert Hecht Marco Helbich Benjamin Herfort Florian Hillen Bernhard Höfle Danfeng Hong Flávio E. A. HoritaFlávio Eduardo Aoki Horita Xuke Hu Haosheng Huang Wei Huang 0014 Johannes Huber Clemens Jacobs Thomas Jänisch Bin Jiang 0004 Ning Jing Andreas Jochem David Jonietz Matthias Jöst Soraya Kaiser Martina Klärle Isabell G. Klipper Carolin Klonner Paul Knight Steffen Knoblauch Craig A. Knoblock Nikolaos Kolaxidis Gefei Kong Fabian Kowatsch Sven Krüger Chiao-Ling Kuo Daniel Kwakye Heimo Laamanen Clemens Langer Moritz Langer Sandra Lanig Johannes Lauer Sven Lautenbach Richard Leiner Josefine Lenz Chenyu Li 0002 Hao Li 0019 Ming Li 0032 Yuxuan Li Yuze Li Steve H. L. Liang Fernanda Lima-Silva Kaj Lippert Lukas Loos Heinrich Lorei Christina Ludwig Mike Lyons Innocent Maholi Rainer Malaka Maria Martin Sabrina Marx Himshikhar Mazumdar Abdulkadir Memduhoglu Liqiu Meng Jakob Miksch Amin Mobasheri Franz-Benjamin Mocnik Peter Mooney Ivonne Morales Mir Abolfazl Mostafavi Ram Kumar Muthusamy Pascal Neis Steffen Neubauer Alexey Noskov Tessio Novack Omer Olchik David O'Sullivan Martin Over Cécile Paris Erik Pasche Robin Peters Jan Pisl Stefan Poslad Julian Psotta Martin Raifer Guntaj Randhawa Sukanya Randhawa Behnood Rasti Marcel Reinmuth Bernd Resch Francesco Ricci 0001 Kai-Florian Richter Ludwig Richter Antônio Augusto de Aragão RochaAntônio A. de A. Rocha Jorge Gustavo Rocha Roberto dos Santos Rocha Adam Rousell Jin Rui Martin Rutzinger Maksim Rylov Maxim A. Rylov Ricardo Ruiz Sánchez Jens Schaefermeyer Anne Schauss Svend-Jonas Schelhorn Arne Schilling Barbara Schmidt-Belz Stefan Schmitz Stefan Scholz Eva-Marie Schömann Martin Schorcht Moritz Schott Michael Schultz Jennifer von Schwerin Linda M. SeeLinda See Jianga Shang Aurélie Shapiro Nuttha Sirilertworakul Olena Sivak Steffen Staab Enrico Steiger Beate Stollberg Yeran Sun Levi Szamek Shiyu Tang Christian Thiel 0001 Tobias Törnros Rafael Troilo Sven Tschirner Veit Ulrich Sanam Noreen Vardag Leonard Vorbeck Janek Voss Yi-Chen Wang Zhiyong Wang 0004 Albrecht Weiser Jonas Wenk Martin Werner 0001 Hannes Werthner René Westerholt Volker Wichmann Daniel Wiell John P. Wilson Stephan Winter 0001 Raphael Witt Rüdiger Wolff Hangbin Wu Zhaoyan Wu Zhaoyhan Wu Yingwei Yan Anran Yang Bisheng Yang Chunling Yang Jing Yao 0002 Zhendong Yuan Johannes Zech Bing Zhang 0001 Yan Zhang Qiming Zhou Yan Zhou Xiao Xiang Zhu 0001 Mohammed Zia Dennis Zielstra