load_summarize_chain

• https://python.langchain.com/v0.2/docs/tutorials/summarization/

load_summarize_chain

• Three ways to summarize or otherwise combine documents.
  1. Stuff : simply concatenates documents into a prompt
     • Usually the simplest method
     • When documents fit in context window
  2. Map-reduce : splits documents into batches, summarizes those, and then summarizes the summaries
     • When documents does not fit in context window
  3. Refine: updates a rolling summary be iterating over the documents in a sequence.

from langchain.chains.summarize import load_summarize_chain