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chore: change pic to cos

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2023-07-02 00:33:36 +08:00
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4.人工智能/4.6.8.1前言.md
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@@ -24,7 +24,7 @@
直观来讲，我们把特征的向量进行一下归一化，它们就分布在一个超球面上。简单起见，我们先看 3 维向量
![](https://hdu-cs-wiki.oss-cn-hangzhou.aliyuncs.com/boxcnJ6HpIJqxJuxiz7Cw5GopSh.png)
![](https://pic-hdu-cs-wiki-1307923872.cos.ap-shanghai.myqcloud.com/boxcnJ6HpIJqxJuxiz7Cw5GopSh.png)
我们通过<strong>正样本</strong>（跟拿到的特征<strong>应当相近</strong>的另一个特征）与<strong>负样本</strong>（反之）的对比，使得