zygmuntz

#!/usr/bin/env python

"""
A Siamese network example modified to use weighted L1 distance and cross-entropy loss, as in
Siamese Neural Networks for One-shot Image Recognition
http://www.cs.toronto.edu/~rsalakhu/papers/oneshot1.pdf

"""

zygmuntz

% y is a vector of labels
y_one_hot = zeros( size( y, 1 ), n_classes );

% assuming class labels start from one
for i = 1:n_classes
    rows = y == i;
    y_one_hot( rows, i ) = 1;
end