3dz² orbital of hydrogen n = 3, l = 2, m = 0
Each of the 2,400 dots is a Monte Carlo sample of |ψ|², a place the electron is likely to be. Vermilion and teal are the two signs of ψ. Drag to rotate.
I'm a fifth-year BS-MS student at IISER Kolkata, majoring in chemistry with a minor in computer science. I work on information retrieval and language-model evaluation, simulate molecules with DFT and molecular dynamics, and write the software both need.
This year I'm co-organising the SycoLex track at FIRE 2026 and building two companies, iFiNN and UnderWater AI.
Most of my published work is in information retrieval: getting the right evidence in front of a person or a language model. In chemistry I work computationally, with DFT on catalysts and molecular dynamics.
ECIR 2026. First author, with Aheli Poddar, Alok Mishra and Dwaipayan Roy. A configurable retrieval-augmented pipeline for agricultural questions, released with a 15,247-entry dataset.
1,954 cases from three jurisdictions. Under review for the CIKM 2026 resource track, and the data behind the FIRE 2026 shared task I co-organise.
FIRE 2025, CEUR-WS vol. 4173. First author, with Alok Mishra and Utkarsha Ghosh.
TREC 2024. Joint first author with Subinay Adhikary, with Soumyadeep Sar and Dwaipayan Roy. Finding a book or film from a half-remembered description; recall@1000 of 0.807.
DFT study of a vanadium complex, with Soumyajit Roy.
Things I've built for simulation, retrieval and teaching. Nearly all of it is open source.
A molecular viewer and LAMMPS workbench that runs on the GPU in your browser. Open LAMMPS data, XYZ, PDB or CIF files, assemble input scripts from 186 commands, and play back dump trajectories.
Teal marks links and the orbital's negative lobes. Vermilion marks its positive lobes.
All 92 public repositories are on GitHub, or browse them by language.
Co-founder and lead developer of an AI fintech company that builds trading alerts. Funded by MeitY Startup Hub (GENESIS) and incubated at RISE Foundation, IISER Kolkata.
Co-founder and CTO. Software that cleans up murky underwater footage. Same funding and incubator.
Co-organiser, with colleagues at IISER Kolkata, UBO in France and the University of Amsterdam.
President of the programming and design club.
Research intern. Compared more than 30 open-source quality control tools for digital pathology slides.
With Dwaipayan Roy: BM25 and dense retrieval fused by reciprocal rank fusion, answering questions with the sources attached.
Utilities I built for coursework, research and friends. Most run entirely in your browser, so your files stay on your machine.
Before IISER I spent a year studying physics at the University of Calcutta. I've taught programming and science privately since 2018, and I wrote a book, MindScapes, in 2020.
I'm looking for PhD positions and research collaborations in retrieval, language-model evaluation and computational chemistry. Email is the quickest way to reach me.