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docs: §27 v_next4适用范围真相 - 全部验证在267池(非全市场)+信念调优无效
重大发现:
- stock_daily扩表时间线: 07-29=272codes/07-30=520/08-02=4266
- v_next4全部2y/5y/10y记录都在扩表前的267只A股池(实盘跟踪池)上验证
- 全市场复跑: 1427笔/wr35.9%/3槽组合-34.3% — v8.1评分池外完全失效
- 池内复现108笔/wr61.1%/full ret79.5% ≈ 库里103笔/63.1%/81.6%
- 信念变体调优(DNA×1/flow×3/cap×6/组合): 108笔噪声内无显著差异
- DNA降权反而变差(75.7%vs79.5%), §26结论被样本噪声误导已修正
- 结论: v_next4是池内有效策略, 组合页应标注适用池; v_weak是全市场验证
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