insertion of equation in classification layer of deep neural network for semantic segmetnation.

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Raza Ali
Raza Ali 2020-10-5
评论： Raza Ali 2020-10-6
I need to implement the following equation in the classification layer.
Equation:
d(t,x) is Euclidean distance between x and t.
code for classfication layer
%%%%%%%%%%%%%%%
classdef ClassificationLayer < nnet.layer.ClassificationLayer
properties
%
end
methods
function layer = ClassificationLayer(name)
% l
l
% Set layer name.
layer.Name = name;
end
% Set layer description
layer.Description = ' cross entropy loss';
end
function loss = forwardLoss(layer, Y, T)
% loss = forwardLoss(layer, Y, T) returns the cross entropy loss between the predictions Y and the training targets T.
N = size(Y,4);
Y = squeeze(Y);
T = squeeze(T);
prod = T.*log(Y));
loss = -sum(prod(:))/N;
end
function dLdY = backwardLoss(layer, Y, T)
% dLdX = backwardLoss(layer, Y, T) returns the derivatives of the cross entropy loss with respect to the predictions Y.
Y = squeeze(Y);
T = squeeze(T);
dLdY = -(T./Y)/N;
end
end
end

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