Can change the output.

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Ali Asghar 2019-12-18

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https://ww2.mathworks.cn/matlabcentral/answers/497236-can-change-the-output

编辑： Adam Danz 2019-12-18

在 MATLAB Online 中打开

Dear all

I can change the output (D)

clear all, clc 
rng(3);
X = zeros(5, 5, 5);
X(:, :, 1) = [ 0 1 1 0 0;
 0 0 1 0 0;
 0 0 1 0 0;
 0 0 1 0 0;
 0 1 1 1 0
 ];
X(:, :, 2) = [ 1 1 1 1 0;
 0 0 0 0 1;
 0 1 1 1 0;
 1 0 0 0 0;
 1 1 1 1 1
 ];
X(:, :, 3) = [ 1 1 1 1 0;
 0 0 0 0 1;
 0 1 1 1 0;
 0 0 0 0 1;
 1 1 1 1 0
 ];
X(:, :, 4) = [ 0 0 0 1 0;
 0 0 1 1 0;
 0 1 0 1 0;
 1 1 1 1 1;
 0 0 0 1 0
 ];
X(:, :, 5) = [ 1 1 1 1 1;
 1 0 0 0 0;
 1 1 1 1 0;
 0 0 0 0 1;
 1 1 1 1 0
 ];
D = [ 1 0 0 0 0;   % what to write D as [1 2 3 4 5; 0 1 2 3 4; etc]
 0 1 0 0 0;
 0 0 1 0 0;
 0 0 0 1 0;
 0 0 0 0 1
 ];
W1 = 2*rand(50, 25) - 1;
W2 = 2*rand( 5, 50) - 1;
for epoch = 1:10000 % train
 [W1 W2] = MultiClass(W1, W2, X, D);
end
N = 5; % inference
for k = 1:N
 x = reshape(X(:, :, k), 25, 1);
 v1 = W1*x;
 y1 = Sigmoid(v1);
 v = W2*y1;
 y = Softmax(v)
end

When i rewrite the D it show error of NaN....

FUNCTIONS

function [W1, W2] = MultiClass(W1, W2, X, D)
 alpha = 0.9;
 N = 5;
 for k = 1:N
 x = reshape(X(:, :, k), 25, 1);
 d = D(k, :)';
 v1 = W1*x;
 y1 = Sigmoid(v1);
 v = W2*y1;
 y = Softmax(v);
 e = d - y;
 delta = e;
 e1 = W2'*delta;
 delta1 = y1.*(1-y1).*e1;
 dW1 = alpha*delta1*x';
 W1 = W1 + dW1;
 dW2 = alpha*delta*y1';
 W2 = W2 + dW2;
 end
end
function y = Sigmoid(x)
 y = 1 ./ (1 + exp(-x));
end
function y = Softmax(x)
 ex = exp(x);
 y = ex / sum(ex);
end

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Adam Danz 2019-12-18

编辑：Adam Danz 2019-12-18

I edited your question to format the code. In the future, please format your code in all questions, comments, and answers (I see you've got some experience here so that should be clear by now).

"When i rewrite the D it show error of NaN.... "

I run your code without error.

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