For BlueSky AI Hackathon
https://how.wtf/how-to-use-csv-files-in-vector-stores-with-langchain.html
Done in /flock-web-app.ipynb: Langchain with CSV data in a vector store
Tried in here: Langchain Expression with Chroma DB CSV (RAG)
key: DID value: user
pairwise dot products between all user embeeddings