🔧 Building a RAG-Based PDF Question Answering System: Engineering Decisions, Failures, and Lessons

A technical deep-dive into StudyMate AI — a Retrieval-Augmented Generation system built with LangChain, FAISS, HuggingFace, and Groq. *





As an AI/ML student preparing applications for research internships at companies like Google, I wanted to build something that went beyond the typical classifier or fine-tuning demo. I wanted a project that...