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机器学习中常见的损失函数 | Alex_McAvoy #959

Open Alex-McAvoy opened 10 months ago

Alex-McAvoy commented 10 months ago

https://alex-mcavoy.github.io/artificial-intelligence/machine-learning/compututational-learning-theory/4a4b5c97.html?

【0-1 损失函数】0-1 损失函数(0-1 Loss Function)常用于分类问题,当真实值 $y$ 与预测值 $f(\mathbf{x};\boldsymbol{\theta})$ 不相等为 $1$,否则为 $0$,其标准形式如下: L(y,f(\mathbf{x};\boldsymbol{\theta})) = \left{\begin{array} {rl}1 & y \neq