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# 第 6 章：别高兴太早：防止过拟合
> 最新书稿已更新至 [XQuant 量化课堂页](https://xquant.shop/courses)。
> 想阅读最新版官方书稿，请前往图书页。
第 5 章我们给策略做了一次全面体检：基准对比、逐年拆解、收益分布、参数敏感性。现在你手上有一套完整的评估方法。
但所有体检结果都基于一个前提：**回测结果是真实的。**