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Update chapter6.md
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zhimin-z committed Jul 9, 2023
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Expand Up @@ -56,17 +56,17 @@ P122,介绍一种将样本空间划分成多个互不相容的区域,然后

一种典型的方案就是我们熟悉的决策树模型:

<center><img src="imgs/1.png" width= "800"/></center>
<center><img src="docs/chapter6/imgs/1.png" width= "800"/></center>

每当构造出一个决策树的节点时,就等同于在样本空间上做出了一次划分。这一洞察方式同样可解释剪枝操作,例如剪枝前的样本空间为:

<center><img src="imgs/2.png" width= "400"/></center>
<center><img src="docs/chapter6/imgs/2.png" width= "400"/></center>



而剪枝之后则为:

<center><img src="imgs/3.png" width= "400"/></center>
<center><img src="docs/chapter6/imgs/3.png" width= "400"/></center>

此即所谓的划分机制。

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