yestin_L的博客

本周作业：Multi-class Classification and Neural Networks（多层次分类和神经网络）对手写数字进行辨别、分类[*] lrCostFunction.m - Logistic regression cost function[*] oneVsAll.m - Train a one-vs-all multi-class classifier[*] predict...

本周作业：Neural Networks Learning实现神经网络BP算法，应用于手写数字的辨别。[*] sigmoidGradient.m - Compute the gradient of the sigmoid function[*] randInitializeWeights.m - Randomly initialize weights[*] nnCostFunction.m - N...