Knowledge Graph of several documents (pdf's)

Hi,

There are several books in .pdf that are written in the same subject area. I would like to combine them in a meaningfull way so that students can query via an LLM (preferable an SLM) . please advice the following:

  • How do I create a knowledge graph for 1 book?
  • do I make seperate knowledge graphs per book or should I somehow make an overarching knowledge graph for all of them (i am new to this :) ).
  • I would like the student to know where the answer is coming from so he can do more research offline by further reading the books. Is it possible to do this?
  • In this scenario should I also use a vector database? And if so what are the main advantages?

As said before I am new to this specific field so apologies in advance.

best,