unstructured
pypdf
markdown
rapidocr-onnxruntime
sentence_transformers
rank_bm25
ipywidgets
jupyter
openai
langchain-openai
# Ref.: https://www.youtube.com/watch?v=IvEh7A308FU&list=PL4HSTFSd-tAjDqQG9AE_dN6ByFgAaHcAU&index=2
langchain 
openai 
chromadb 
tiktoken 
pypdf 
panel