Towards Data Science

Stop Returning Flat Text from a PDF: The Relational Shape RAG Needs

Enterprise Document Intelligence [Vol. 1 #5B] - One PDF in, a relational set of DataFrames out: lines, pages, TOC, images, cross-references, captions, spans, and a parsing summary The post Stop Returning Flat Text from a PDF: The Relational Shape RAG Needs appeared first on Towards Data Science .

Towards Data Science
Sep 3

Tables in PDFs for RAG: Don’t Flatten the Grid

The article titled "Tables in PDFs for RAG: Don’t Flatten the Grid" discusses Enterprise Document Intelligence, presenting a diagnostic and five composable operations rather than a decision tree. It appears in the Vol.1 #B4 issue of the publication and was first posted on Towards Data Science.

By Kezhan Shi
Towards Data Science
Aug 5

Building Document Structure with Loop Engineering: Recovering a PDF’s Outline from Body Typography for RAG

Enterprise Document Intelligence [Vol. 1 #5octies] - Rules propose, LLM validates: six deterministic signals on span-level typography surface heading candidates, one bounded loop keeps the real ones, and the same toc_df drops back into the RAG pipeline The post Building Document Structure with Loop Engineering: Recovering a PDF’s Outline from Body Typography for RAG appeared first on Towards Data Science .

By angela shi
Towards Data Science
Aug 22

Multi-Document RAG: A Folder of Unrelated PDFs Is One Long Document with a Nested Outline

The article discusses a method for handling a folder of unrelated PDFs as a single long document with a nested outline. It highlights that without shared fields, an index cannot be built, so the approach uses one summary line per file and each file’s own table of contents, with retrieval routes extending down two levels. This structure enables retrieval-augmented generation (RAG) across multiple documents.

By angela shi