机器学习第三课

Classification:不能用线性回归 Logistic Regression:0 ≤ h θ ( x ) ≤ 1 {\leq}h_{\theta}(x){\leq}1 ≤hθ​(x)≤1 (a classification algortihm) h θ ( x ) = g ( θ T x ) h_{\theta}(x)=g({\theta}^Tx) hθ​(x)=g(θTx) g(z)=

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