kNN analysis

Yesterday's learning was killed because it would have taken 10+ days for the kNN classifier to be trained using a 5-fold validation. Now all the positive examples and negative examples are used as training examples. The 5-NN classifier has started running but it looks like it would take a looong time to run (~6 days). Here I tried to see if the region matching was done. The below figures are show various 5 - nearest neighbors for test patches.