Understanding RAG by Building a ChatPDF App: Smarter Chunking & Context Optimization (Part 3)

⚡ Understanding RAG by Building a ChatPDF App: Better Chunking & Smarter Context In Part 1, we made it work. In Part 2, we made it fast. In Part 3, things got… interesting 😅 📌 Recap from Part 1 & 2 In the previous parts: 👉 Part 1 Built a basic RAG pipeline using NumPy Understood embeddings + similarity search 👉 Part 2 Switched to FAISS for fast retrieval ⚡ Added persistence + re-ranking At this point, everything looked solid. 😅 But Something Still Felt Off I started testing with rea