机器学习系列5-梯度下降法

Gradient Descent Review 前面预测宝可梦cp值的例子里，已经初步介绍了Gradient Descent的用法： In step 3,​ we have to solve the following optimization problem: θ ∗ = arg ⁡ min ⁡ θ L ( θ ) \theta^{*}=\arg \underset{\theta}{\min}

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