Andrew Ng机器学习week4(Neural Networks: Representation)编程习题
* lrCostFunction.m * oneVsAll.m * predictOneVsAll.m ...
* lrCostFunction.m * oneVsAll.m * predictOneVsAll.m ...
* sigmoid.m * costFunction.m * predict.m * costFunctionReg.m ...
* nnCostFunction.m * sigmoidGradient.m ...