Asked about Splitting documents well

Why overlap chunks?

An answer that works

So an answer that straddles a boundary is not lost from both chunks. It costs a little storage and duplication and prevents a whole class of silent retrieval failure.

Reading an answer is not being able to give one. The section that teaches this is Splitting documents well, 4 hours of Chunking & document processing.

Learn this properly

Also asked about Chunking & document processing

Why is document parsing the hard part of RAG?How do you handle tables in documents?What would you strip from HTML before indexing?Someone asks you for the best chunk size. What do you say?How would you chunk documents for retrieval?What is the trade-off in chunk size?