How to Turn a Lecture Into Bilingual Subtitles and a Study Guide

A practical source-first workflow for turning one owned lecture into corrected subtitles, aligned bilingual text, a pocket study guide, and concepts that still point to the exact moment in the recording.

Before You Index 17,000 Research PDFs, Test the Collection

A practical integrity test for scientific PDF collections: identify versions, audit extraction, preserve page-level provenance, measure retrieval, and build the knowledge graph only after the evidence is stable.

How to Search Confidential PDFs Locally on a 12 GB Laptop—Without Overbuilding RAG

A practical, privacy-first path from searchable PDFs to local retrieval: extract text, measure full-text search, add OCR or embeddings only when the evidence says you need them, and keep every result tied to its source.