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machine-learning-ex2/ex2/sigmoid.m
2017-05-28 06:50:45 +09:00

19 lines
448 B
Matlab

function g = sigmoid(z)
%SIGMOID Compute sigmoid function
% g = SIGMOID(z) computes the sigmoid of z.
% You need to return the following variables correctly
g = zeros(size(z));
% ====================== YOUR CODE HERE ======================
% Instructions: Compute the sigmoid of each value of z (z can be a matrix,
% vector or scalar).
g = 1./(1+exp(-z));
% =============================================================
end