/exercises/mlclass-ex1/computeCost.m
http://github.com/jneira/machine-learning-course · Objective C · 19 lines · 14 code · 5 blank · 0 comment · 2 complexity · 135a6836d4d18ec9ffb286e5983162ee MD5 · raw file
- function J = computeCost(X, y, theta)
- %COMPUTECOST Compute cost for linear regression
- % J = COMPUTECOST(X, y, theta) computes the cost of using theta as the
- % parameter for linear regression to fit the data points in X and y
- % Initialize some useful values
- m = length(y); % number of training examples
- % You need to return the following variables correctly
- J = 0;
- % ====================== YOUR CODE HERE ======================
- % Instructions: Compute the cost of a particular choice of theta
- % You should set J to the cost.
- J = sum(((X*theta)-y).^2)/(2*m);
- % =========================================================================
- end