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一、神经网络代价函数深入理解: 逻辑回归中的代价函数形式为:$J(\theta )=-\frac{1}{m}\sum_{i=1}^{m}\left [ y^{(i)}log(h_\theta(x^{(i)}))+(1-y^{(i)})log(1-h_\theta(x^{(i)})) \right ] Read More
posted @ 2016-12-27 11:20 玄天妙地 Views(1285) Comments(0) Diggs(0) Edit