Challenges of NLP in Dealing with Structured Documents: The Case of PDFs


  • NLP’s expanding real-world applications face a hurdle.
  • Most NLP tasks assume clean, raw text data.
  • In practice, many documents, especially legal ones, are visually structured, like PDFs.
  • Visual Structured Documents (VSDs) pose challenges for content extraction.
  • The discussion primarily focuses on text-only layered PDFs.
  • These PDFs, although considered resolved, still present NLP challenges.