Juan Pablo Mesa Lopez (@juanpml

Juan Pablo Mesa Lopez

203 posts

Juan Pablo Mesa Lopez

@juanpml_

Applied AI Consultant. Ph.D in AI and OR. AI Engineer Focused on LLMs, RAG, search, and building AI-powered software. Sharing my real-world experiences.

Joined October 2020

Pinned
Juan Pablo Mesa Lopez
@juanpml_
Jun 10
Abrimos la Cohorte 3 de AI Engineering: Fundamentos de Construcción de Aplicaciones de IA. Son nueve semanas, 100% online, una sesión en vivo por semana los martes, y consultorías los jueves. Durante todo el programa construyes una aplicación de IA real y la llevas hasta
152
Juan Pablo Mesa Lopez
@juanpml_
Apr 6, 2024
In a RAG pipeline, the chunking method matters. In a recent comparison between some chunking methods, with a couple of embedding models and rerankers, Naive Sentence Splitter with ColbertV2 performed better than all the other methods.
4.9K
Juan Pablo Mesa Lopez
@juanpml_
Jul 5, 2024
Before jumping on the GraphRAG hype: 1. Ensure you have robust evaluation metrics for your current RAG system 2. Measure your current RAG strategies performance 3. Implement Microsoft's GraphRAG if you consider it might help 4. Compare results Don't blindly implement new
4K
Juan Pablo Mesa Lopez
@juanpml_
Jul 21, 2024
Improving Your RAG Chatbot: Beyond the MVP You've built an MVP for a RAG-powered chatbot with document ingestion and vector-db storage. What's next? Drawing from client experiences, here are some enhancements that you should consider: 1. Implement evals for retrieval quality.
2.4K
Juan Pablo Mesa Lopez
@juanpml_
Sep 9, 2024
After 5 years, I've successfully defended my PhD thesis, "Metaheuristics for Vehicle Routing Problem with Data-Driven Methods"!🎓🎉 I'm grateful for the guidance of my advisors @AlejoMontoyaE @Maurici68169173 and Raul Ramos throughout all these years.
3.6K
Juan Pablo Mesa Lopez
@juanpml_
Jul 16, 2024
While countless tutorials show how easy it is to create RAG apps, most overlook crucial elements: baselines and evaluation metrics. Without these, it's impossible to measure actual performance or improvement. Let's raise the bar on RAG app development and focus on quantifiable
1.5K
Juan Pablo Mesa Lopez
@juanpml_
Sep 7, 2021
Our technical article for the Amazon-MIT Last Mile Routing Research Challenge has been released at these proceedings hdl.handle.net/1721.1/131235. We obtained the 9th place with our work "A Data-Driven Metaheuristic Approach to Predict Delivery Route Sequences" @AlejoMontoyaE
Juan Pablo Mesa Lopez
@juanpml_
May 29, 2024
This is the best comprehensive write-up about building with LLMs that I've read. It's written by a group of experts in this area @eugeneyan @charles_irl @HamelHusain @BEBischof @jxnlco @sh_reya It's just full of practical tips about prompting, RAG, fine-tunning, evals, etc.
1K
Juan Pablo Mesa Lopez
@juanpml_
Sep 2, 2024
I wanted to test a search and retrieval pipeline within Gemini and compare it against Colpali+Vespa search, but it doesn't work. Trying to upload a 248-page PDF (164 MB) gives a 400 status code error. Is anyone able to upload large PDFs and query them? @jobergum @GregKamradt
Logan Kilpatrick
@OfficialLoganK
Aug 20, 2024
We just increased the max PDF page upload size to 1,000 pages or 2GB (up from 300 pages) in Google AI Studio and the Gemini API. 🗒️ We use both text understanding and the native multi-modal capabilities of Gemini to process these documents (1 image per page).
1.4K
Juan Pablo Mesa Lopez
@juanpml_
Jul 31, 2024
This course is great! Each cohort gets better every time. Can’t recommend it enough.
Santiago
@svpino
Jul 30, 2024
Less than one week until this happens: In August, you'll learn how to build systems using SageMaker. In November, we'll do it all using open-source libraries. Build once, deploy anywhere. People who join today have access to both. x.com/svpino/status/…
1.2K
Juan Pablo Mesa Lopez
@juanpml_
Jun 27, 2022
The preprint of our new research work “A Two-Stage Data-Driven Metaheuristic to Predict Last-Mile Delivery Route Sequences” is now available at papers.ssrn.com/sol3/papers.cf…. @AlejoMontoyaE @Maurici68169173 @CAEI_EAFIT
Juan Pablo Mesa Lopez
@juanpml_
May 31, 2022
The preprint of our research work “Machine-Learning Component for Multi-Start Metaheuristics to Solve the Capacitated Vehicle Routing Problem” is now available at papers.ssrn.com/sol3/papers.cf…. @AlejoMontoyaE @Maurici68169173 @CAEI_EAFIT
Juan Pablo Mesa Lopez
@juanpml_
Jun 20, 2024
Summary of the first hour:
GIF
Hugo Bowne-Anderson
@hugobowne
Jun 20, 2024
Going live in 15 with @HamelHusain @eugeneyan @BEBischof @sh_reya @charles_irl @jxnlco youtube.com/live/c0gcsprsF…
249
Juan Pablo Mesa Lopez
@juanpml_
Sep 17, 2023
Replying to @manoj_ahi
What about posting articles in your own page to show the new integrated Blog capabilities of your Boilerplates?
139