AUC播放 是什么意思

2025-03-13 23:14:47
推荐回答(4个)
回答1:

au c

回答2:

AUC(Area Under Curve)被定义为ROC曲线下与坐标轴围成的面积,显然这个面积的数值不会大于1。又由于ROC曲线一般都处于y=x这条直线的上方,所以AUC的取值范围在0.5和1之间。使用AUC值作为评价标准是因为很多时候ROC曲线并不能清晰的说明哪个分类器的效果更好,而作为一个数值,对应AUC更大的分类器效果更好。
中文名
AUC
外文名
Area Under Curve
含义
ROC曲线下与坐标轴围成的面积
含义
那么AUC值的含义是什么呢?根据(Fawcett, 2006),AUC的值的含义是: > The AUC value is equivalent to the probability that a randomly chosen positive example is ranked higher than a randomly chosen negative example.
解释
这句话有些绕,我尝试解释一下:首先AUC值是一个概率值,当你随机挑选一个正样本以及一个负样本,当前的分类算法根据计算得到的Score值将这个正样本排在负样本前面的概率就是AUC值。当然,AUC值越大,当前的分类算法越有可能将正样本排在负样本前面,即能够更好的分类。

回答3:

首先AUC值是一个概率值,当你随机挑选一个正样本以及一个负样本,当前的分类算法根据计算得到的Score值将这个正样本排在负样本前面的概率就是AUC值。当然,AUC值越大,当前的分类算法越有可能将正样本排在负样本前面,即能够更好的分类。

回答4:

我有的~看简介嗷~

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