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How do you pick chunk size and overlap when chunking a PDF document for retrieval?

ML Concept: 5-8 minutes to answer

RAGchunkingretrievaldocument-processingreal-interviewcategory:ai_llm_tools
Updated Feb 20, 2026

Question

Question

How do you pick chunk size and overlap when chunking a PDF document for retrieval?

This question tests your practical understanding of document processing for RAG systems and how chunking strategy affects retrieval quality.

Expected time to answer: 5-8 minutes

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