Technology
DuckDB
Everything on this site involving DuckDB — projects, articles, research and tools.
RAG Evaluation Lab
Most RAG systems are tuned by vibes. This is a reproducible harness that measures retrieval and generation separately, so you can see which half is failing.
Laptop Data Platform
Ingestion, transformation, orchestration, testing and a BI layer — the full modern data stack, running locally on DuckDB, dbt and Dagster.
Algorithmic Trading Backtest Lab
A backtesting framework with transaction costs, slippage, walk-forward analysis and survivorship-bias handling — designed to stop a strategy looking better than it is. Educational research only.
DuckDB vs pandas vs Polars: When Each One Wins
A practical decision guide based on workload shape rather than benchmark scores — because the fastest tool depends on what you are actually doing.
RAG Evaluation System
A production-ready evaluation harness: configuration sweeps, retrieval and generation metrics measured separately, and CI regression gates.
Does RSI Actually Work?
Testing the classic RSI(14) mean-reversion rule across 20 years and 500 instruments, with costs included and multiple-testing accounted for.
DuckDB vs pandas vs Polars on 50 Million Rows
A reproducible benchmark across six workload shapes, reporting memory as well as time — because memory is what actually stops the job.
Algorithmic Trading Research With Python
Build a research harness that makes strategies fail honestly: point-in-time data, realistic costs, walk-forward validation. Educational only.
Modern Data Engineering on Your Laptop
DuckDB, dbt and Dagster — ingestion, transformation, testing, orchestration and lineage without a cloud bill.