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Update ch20.md

Open snowflowersnowflake opened this issue 2 years ago • 2 comments

revise to a better expression

snowflowersnowflake avatar Jun 17 '22 08:06 snowflowersnowflake

你好,来信我已收到,我会尽快处理,谢谢!

kinghmy avatar Jun 17 '22 08:06 kinghmy

“来自”指的是取样,在这里不太合适,除非测试集和训练集抽样自同一样本。而实际上测试集应该是作为样本外的,只能说和训练集应当服从相同的分布,具备一致的统计性质。

snowflowersnowflake avatar Jun 17 '22 08:06 snowflowersnowflake