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Data Science
Towards Data Science·Jun 21·5 min read
Reconstructing the Table of Contents a PDF Forgot to Ship, So RAG Can Scope by Section
TL;DR
Many PDFs lack a structured Table of Contents (ToC), making navigation difficult. A method was developed to reconstruct the ToC using two techniques: text extraction and page alignment.
✦ Why It Matters
Engineers can implement these techniques to enhance document navigation and user experience in their applications.
Key Takeaways
- Implement text extraction for document analysis.
- Use page alignment for accurate section placement.
- Enhance user navigation in digital documents.
- Apply these techniques to improve document management.
Full Summary
PDFs often print a contents page but do not include an interactive outline, which can hinder user navigation. To address this, two techniques were employed: text extraction to identify section headings and page alignment to ensure accurate placement of these headings within the document.
The methodology involved analyzing the PDF's text layers and correlating them with page numbers to recreate a functional ToC. Results showed that users could navigate documents more efficiently, with a reported 30% reduction in time spent searching for sections.
This reconstruction not only enhances usability but also supports better document management practices. For engineers and researchers, this method can be applied to improve the accessibility of digital documents.