Branch to code the Artificial Neural Network
Started to code the cost function
ann creates theta and calls ann_cost_function
ANN Forward Propagation
ANN Forward Propagation fix
Improve forward propagation for K classes
Forward return A matrix instead of H value
First version of Backpropagation
New Forward and Theta with right dimensions
Theta and A with L notation using cell array
ANN Backpropagation with cell array
ANN Fix Theta elements
ANN Backpropagation fix and delta creation
ANN Cost Function
ANN cost function without gradient
ANN cost function with gradient commented
ANN change cell array to 3D matrix
ANN J calculation
ANN maybe working
Merge ANN to master