https://abhijith-nagarajan.com/tags/rag/Recent content in RAG on Abhijith NagarajanHugoen-usTue, 01 Jul 2025 00:00:00 +0000https://abhijith-nagarajan.com/projects/mental-health-chatbot/Sat, 17 May 2025 00:00:00 +0000https://abhijith-nagarajan.com/projects/mental-health-chatbot/An end-to-end retrieval-augmented generation system that grounds a local LLM in peer-reviewed PubMed abstracts to answer questions on the neurochemistry of mental health, evaluated against the BioASQ-13b biomedical QA benchmark.https://abhijith-nagarajan.com/projects/sherpa-semi-structured-rag/Thu, 19 Dec 2024 00:00:00 +0000https://abhijith-nagarajan.com/projects/sherpa-semi-structured-rag/A semi-structured, non-parametric memory framework for RAG that combines knowledge graphs with a hierarchical vector store. My contributions: Query Classification (heuristics → LLM-bootstrapped labels → fine-tuned BioLinkBERT) and Entity-Relation Extraction (REBEL fine-tuned on BioRED, with FastCoref preprocessing) — landed on REBEL after a long experimental funnel.https://abhijith-nagarajan.com/experience/ncsa-uiuc/Tue, 01 Jul 2025 00:00:00 +0000https://abhijith-nagarajan.com/experience/ncsa-uiuc/Biomedical reasoning research on causal links between genetic perturbations and cancer phenotypes.https://abhijith-nagarajan.com/experience/uiuc-masters/Tue, 01 Aug 2023 00:00:00 +0000https://abhijith-nagarajan.com/experience/uiuc-masters/LLM research on Information Retrieval focused on entity relation extraction.