Blog
Methodology, comparisons, and walkthroughs. Plain-prose, no marketing.
- Backtesting
Why Backtests Lie: The Lookahead Bias Trap
Most quant blog backtests look amazing on paper and fail in production. The reason is almost always lookahead bias. Here's exactly what it is and how to prevent it.
2026-05-109 minen - Methodology
Multi-Agent LLM vs Single-Prompt ChatGPT for Stock Analysis
Why does asking ChatGPT 'should I buy AAPL?' produce a hand-wavy answer? Because one prompt can't do five specialist jobs. Here's what changes when you separate roles.
2026-05-097 minen - A股方法论
为什么 A 股决策需要东方财富股吧而不是 Twitter
做 A 股不能照搬美股的 Reddit/Twitter 套路。东方财富股吧才是中国散户真实情绪的水源地。这里把数据源、抓取限制、隐性偏差都讲清楚。
2026-05-068 minzh