{"slug": "why-your-rag-system-doesnt-know-whats-in-your-pdfs-and-how-to-fix-it", "title": "Why Your RAG System Doesn’t Know What’s in Your PDFs (And How to Fix It)", "summary": "A three-step pipeline using pdfplumber, regex, and fuzzy matching converts unstructured invoices into structured data for RAG systems. The approach addresses common failures in extracting information from PDFs.", "body_md": "A three-step pipeline — pdfplumber, regex, and fuzzy matching — that turns unstructured invoices into data your model can actually use.\nContinue reading on Towards AI »", "url": "https://wpnews.pro/news/why-your-rag-system-doesnt-know-whats-in-your-pdfs-and-how-to-fix-it", "canonical_source": "https://pub.towardsai.net/why-your-rag-system-doesnt-know-what-s-in-your-pdfs-and-how-to-fix-it-d5df7a91ae4e?source=rss----98111c9905da---4", "published_at": "2026-06-15 20:31:00+00:00", "updated_at": "2026-06-15 20:40:50.923047+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-tools", "natural-language-processing"], "entities": ["pdfplumber", "Towards AI"], "alternates": {"html": "https://wpnews.pro/news/why-your-rag-system-doesnt-know-whats-in-your-pdfs-and-how-to-fix-it", "markdown": "https://wpnews.pro/news/why-your-rag-system-doesnt-know-whats-in-your-pdfs-and-how-to-fix-it.md", "text": "https://wpnews.pro/news/why-your-rag-system-doesnt-know-whats-in-your-pdfs-and-how-to-fix-it.txt", "jsonld": "https://wpnews.pro/news/why-your-rag-system-doesnt-know-whats-in-your-pdfs-and-how-to-fix-it.jsonld"}}