feat: Enhance document processing with page tracking and reference validation #2189
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…lidation - Added optional page tracking fields (start_page, end_page, pages) to TextChunkSchema. - Updated LightRAG class to handle page metadata during document processing. - Implemented validation for LLM responses to ensure only valid reference IDs are used. - Enhanced chunking functions to include page data for better context management. - Improved reference generation to include page ranges for citations. - Added PDF extraction methods to capture page-level data using PyPDF2 and Docling.
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Description
Added page-Level tracking and citation. Now the references from the retrieval shows the exact page/range of pages from which the chunk was retrieved.
Related Issues
closes #2142
Changes Made
Checklist
Additional Notes
Added debugging to the console for the retrieved chunks and it's metadata, can remove it if not required
The metadata shows a range of pages because of the chunk size, frequently the chunk included content from multiple pages, So had to include a range of pages so as to pinpoint which chunk was used as reference