chore: publish xquant-beginner open book

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xingwudao

2026-06-09 16:05:21 +08:00

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book/images/q6-avoid-overfitting/01-is-vs-oos-scatter-and-top20.png

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book/images/q6-avoid-overfitting/02-walk-forward-rolling-vs-anchored.png

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book/images/q6-avoid-overfitting/03-cross-validation-5fold.png

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book/images/q6-avoid-overfitting/04-rule-burden-4a-4b.png

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