machine-learning-ex4

代码说明：

说明：  Andrew Ng Cousera 机器学习课程神经网络手写字符识别，源代码以及说明文档(Andrew Ng Cousera 's Machine learning courses, Neural Network handwritten character recognition, source code and documentation)

文件列表：

machine-learning-ex4\machine-learning-ex4\ex4\checkNNGradients.m
machine-learning-ex4\machine-learning-ex4\ex4\computeNumericalGradient.m
machine-learning-ex4\machine-learning-ex4\ex4\debugInitializeWeights.m
machine-learning-ex4\machine-learning-ex4\ex4\displayData.m
machine-learning-ex4\machine-learning-ex4\ex4\ex4.m
machine-learning-ex4\machine-learning-ex4\ex4\ex4data1.mat
machine-learning-ex4\machine-learning-ex4\ex4\ex4weights.mat
machine-learning-ex4\machine-learning-ex4\ex4\fmincg.m
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\AUTHORS.txt
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\ChangeLog.txt
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\jsonopt.m
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\LICENSE_BSD.txt
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\loadjson.m
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\loadubjson.m
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\mergestruct.m
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\README.txt
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\savejson.m
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\saveubjson.m
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab\varargin2struct.m
machine-learning-ex4\machine-learning-ex4\ex4\lib\makeValidFieldName.m
machine-learning-ex4\machine-learning-ex4\ex4\lib\submitWithConfiguration.m
machine-learning-ex4\machine-learning-ex4\ex4\nnCostFunction.m
machine-learning-ex4\machine-learning-ex4\ex4\predict.m
machine-learning-ex4\machine-learning-ex4\ex4\randInitializeWeights.m
machine-learning-ex4\machine-learning-ex4\ex4\sigmoid.m
machine-learning-ex4\machine-learning-ex4\ex4\sigmoidGradient.m
machine-learning-ex4\machine-learning-ex4\ex4\submit.m
machine-learning-ex4\machine-learning-ex4\ex4.pdf
machine-learning-ex4\machine-learning-ex4\ex4\lib\jsonlab
machine-learning-ex4\machine-learning-ex4\ex4\lib
machine-learning-ex4\machine-learning-ex4\ex4
machine-learning-ex4\machine-learning-ex4
machine-learning-ex4