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Hideaki Takahashi
developerPh.D. student @columbia working on Security, Crypto, and AI/ML
Public projects
AIJack
Security and Privacy Risk Simulator for Machine Learning (arXiv:2312.17667)
C++adversarial-attacksadversarial-examplesadversarial-machine-learning
h5i-db
An agent-native workspace for quantitative research: an in-terminal notebook, a high-performance time-series database, and a high-throughput backtesting engine. Written in Rust.
Rustai-agentsbacktestingdatabase
h5i-ctx2img
Render agent context as images. Same text, ~60–75% fewer tokens.
Rustagent-skillsagent-toolsai-agent-tools
transformer-from-scratch
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PiFormer
Succinct ZK Proofs of Transformer Inference via Structured Lookup Attention
Rust
WeirdChain
Analyze MCP agents for unexpected tool chains and emergent attack paths.
Rust
Likely stack
ClaudeMCP
