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document-graph

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Structure-aware PDF chunking for RAG. It builds a document hierarchy from multiple PDFs and splits chunks along section boundaries. Output is a NetworkX graph linking sections, tables, figures, cross-references and defined terms, with an interactive 3D/2D viewer. It uses LangChain LCEL, with PyMuPDF as the default parser and Docling as an option.

  • Updated Oct 13, 2026
  • Python

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