ex3.m
implement one-vs-all logistic regression and neural networks to recognize hand-written digits.
- Plot Data (in ex3data1.mat)
- Training One-vs-All Logistic Regression
hypothesis function: 1./(1+e.^(-1(Xtheta)))
K = 10 (0 to 9)
Iteration: 50
- Predict for One-Vs-All
ex3_nn.m
implement a neural network to recognize handwritten digits using the same training set as before.
provided with a set of network parameters (Θ(1),Θ(2)) already trained (in ex3weights.mat)
- Feedforward Propagation and Prediction
Loading Saved Neural Network Parameters in ex3weights.mat