Oscar Choi

01 / 06 · research platforms

Three parts: a vault that keeps book notes and measured results as cited, version-controlled notes; a harness whose gates decide when work is done; and AI coding agents that read, build and review.

02 / 06 · engineering and ai

17–21×

archived warm complex128 observable calls, 24–28 qubits, vs the project's own optimized 32-thread CPU; default compensated products, simplification off

A fork of FatQat, an open-source quantum-circuit simulator, inspired by the course CENG5280. It adds CUDA execution for all four simulation methods, keeping the interfaces and double precision. Archived warm complex128 calls on 24–28-qubit observables ran 17–21× faster than the project's own optimized 32-thread CPU engine, using default error-compensated GPU products.

03 / 06 · research platforms

700B+

stored A-share and crypto rows in the 2026-10-05 snapshot; not a unique-row count

The market-data platform I architected as sole developer for the CUHK Quant Trading Society's research team. Version-pinned reads let researchers rerun a study on the same rows.

04 / 06 · engineering and ai

≈80%

fewer tasks with rule violations vs a prompted 4B LLM, on a held-out synthetic tool-use testbed

Joint research on Bayesian scoring and conformal risk control for a small LLM, evaluated on a held-out synthetic tool-use testbed under Prof. XU Hong.

05 / 06 · competitions

IMC Prosperity 4, where Team SHDC placed 904th globally, and the Kaggle Pokémon TCG AI Battle, an agent for a card game with hidden information.

06 / 06 · engineering and ai

A smaller, standalone project: a genetic-programming alpha search with pre-registered splits.