Part 4: Backpropagation << First < Prev Neural Networks Demystified Next > Last >> More by StephenWelch: Part 7: Overfitting, Testing, and Regularization Part 5: Numerical Gradient Checking Part 5: Numbers are Two Dimensional Imaginary Numbers are Real - Part 3: Cardan's Problem

hi, minor correction : at 0:41 on the elft matrix subscripts should be W11, W21and W31

Why are you transposing the matrices when back propagating?