[ml] visualizing the number recognition network

e at eden2.com e at eden2.com
Sat Dec 3 22:19:31 PST 2011


i really liked the bit in the ml-class neural network assignment a while ago that visualized the hidden nodes, and i wondered what would happen if you fed it backwards through the whole network. so this is a visualization of Theta2 * Theta1.

actually,

temp= Theta2(:,2:end) * Theta1;
displayData(temp(:,2:end));

if you squint, they sort of look like numbers! black appears to be negative weight, white positive weight.

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