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xiaoqianxixi

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[求助] R语言聚类分析中的交叉验证问题

我最近在用R语言做聚类分析,用的是R里的randomForest包,不太明白交叉验证的问题,
Number of trees: 500
No. of variables tried at each split: 20
算完之后有上面这两行,请问No. of variables tried at each split: 20是什么意思啊?跟交叉验证有关吗?

还有knnGarden包里的描述是:Multi-distance based k-Nearest Neighbors Classification
with K Threshold Value Check and Same K_i Problem Dealing,Missing Observations Filling。
这是什么意思呢?
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