CheeseZH: Stanford University: Machine Learning Ex4:Training Neural Network(Backpropagation Algorithm)
1. Feedforward and cost function; 2.Regularized cost function: 3.Sigmoid gradient The gradien ...
原文：CheeseZH: Stanford University: Machine Learning Ex3: Multiclass Logistic Regression and Neural Network Prediction
Handwritten digits recognition Multi class Logistic Regression . Vectorizing Logistic Regression Vectorizing the cost function Vectorizing the gradient Vectorizing the regularized cost function Vector ...
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