吳恩達機器學習 - 正規函式

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				版權宣告：如果感覺寫的不錯，轉載標明出處連結哦~blog.csdn.net/wyg1997					https://blog.csdn.net/wyg1997/article/details/80725963				</div>
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						<p>題目連結：<a href="https://s3.amazonaws.com/spark-public/ml/exercises/on-demand/machine-learning-ex1.zip" rel="nofollow" target="_blank">點選開啟連結</a></p>
 

老規矩先貼筆記

按照公式寫程式碼就可以啦：

normalEqn.m:

function [theta] = normalEqn(X, y)
%NORMALEQN Computes the closed-form solution to linear regression 
%   NORMALEQN(X,y) computes the closed-form solution to linear 
%   regression using the normal equations.

theta = zeros(size(X, 2
 
), 1);

% ====================== YOUR CODE HERE ======================
% Instructions: Complete the code to compute the closed form solution
%               to linear regression and put the result in theta.
%

% ---------------------- Sample Solution ----------------------

theta = pinv(X'*X)*X'*y;


% -------------------------------------------------------------
 



% ============================================================

end

  

   
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