IndeterminateThreshold

IndeterminateThreshold

ClassifyPredict 及相关函数的选项,指定低于什么概率或概率密度结果应被认为是不确定的.

更多信息

  • IndeterminateThresholdp0 时,如果预测值的概率或概率密度小于 p0,将返回 Indeterminate.

范例

基本范例  (3)

训练逻辑分类器:

获得新例的类别概率:

预测得到最可能的类别:

如果没有高于该概率阈值的概率,则得不到对类别的预测:

概率阈值可以在分类器中被设定:

训练线性预测器:

可视化给定范例的概率密度:

对于此例,预测值及其对应的概率密度如下:

如果阈值高于该概率密度,则得不到预测值:

在内置分类器中改变 IndeterminateThreshold 的值:

Wolfram Research (2014),IndeterminateThreshold,Wolfram 语言函数,https://reference.wolfram.com/language/ref/IndeterminateThreshold.html.

文本

Wolfram Research (2014),IndeterminateThreshold,Wolfram 语言函数,https://reference.wolfram.com/language/ref/IndeterminateThreshold.html.

CMS

Wolfram 语言. 2014. "IndeterminateThreshold." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/IndeterminateThreshold.html.

APA

Wolfram 语言. (2014). IndeterminateThreshold. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/IndeterminateThreshold.html 年

BibTeX

@misc{reference.wolfram_2024_indeterminatethreshold, author="Wolfram Research", title="{IndeterminateThreshold}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/IndeterminateThreshold.html}", note=[Accessed: 22-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_indeterminatethreshold, organization={Wolfram Research}, title={IndeterminateThreshold}, year={2014}, url={https://reference.wolfram.com/language/ref/IndeterminateThreshold.html}, note=[Accessed: 22-November-2024 ]}