I'm an AI researcher and engineer working on retrieval-augmented generation
and document understanding for large language models.
For more than eight years I've worked on applied AI. I started as an AI scientist at Course5i,
then moved into machine learning engineering at yellow.ai, where I now lead the engineering of the
Document Cognition product.
My research looks at how documents should be chunked, ingested and retrieved so language models
give grounded, accurate answers. I'm based in the United Arab Emirates and always happy to talk
about RAG, document AI and LLMs.
Lightfoot: Graph Retrieval-Augmented Generation with Exact, Model-Free Document Deletion
U Allu
A GraphRAG system where deleting a document is an exact database operation with no model calls. Across MuSiQue, 2WikiMultiHopQA and HotpotQA it builds the cheapest index of the systems compared: 26–31% cheaper than HippoRAG 2 and 3–6× cheaper than LightRAG and fast-graphrag.
Vision-Guided Chunking Is All You Need: Enhancing RAG with Multimodal Document Understanding
V Tripathi, T Odapally, I Das, U Allu, B Ahmed
Uses multimodal document understanding to decide how documents are split into chunks for retrieval-augmented generation, so structure like tables and multi-page sections isn't broken apart.
Lead the engineering of Document Cognition, the platform's knowledge-management product, which turns enterprise documents into accurate, AI-powered answers.
Right model, right technique: evaluate and select the best LLM for each task, then tune the approach around it to get the best balance of accuracy, latency and cost in production.
Retrieval at scale: design retrieval systems built for high accuracy and low latency, from document ingestion and chunking through to search.
LLM evaluation: build evaluation systems that measure LLM quality, so every model and prompt decision is backed by data rather than guesswork.
End to end: own the full path from application development to DevOps, taking AI features from prototype to reliable production systems.
Research into product: retrieval-aware chunking and multimodal RAG, published as D-RAC, W-RAC and Vision-Guided Chunking.
May 2020 — Jun 2021
Machine Learning Engineer
yellow.ai
Bengaluru, India · Full-time
Apr 2018 — Apr 2020
Associate AI Scientist
Course5i
Bengaluru, India · Full-time
Education
2017 — 2018
Post Graduate Diploma, Data Science
Manipal Academy of Higher Education
Machine LearningDeep LearningRHadoop & Spark
2013 — 2017
B.Tech, Computer Science
Miracle Educational Society Group of Institutions
★
Microsoft Student PartnerRepresented Microsoft on campus
Computer Science
04 — Beyond the desk
Places I've been.
Away from the keyboard, I'm usually somewhere new. 7 countries so far, and counting.