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）;?????%?X（792）??theta（21）





%?=========================================================================

end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???35993725??2018-07-30?10:22??練習(xí)\Ang?Machine?Learning.rar

?????文件????????695??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\computeCost.m

?????文件????????711??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\computeCostMulti.m

?????文件???????3805??2018-08-03?11:27??練習(xí)\mlclass-ex1-jin\ex1.m

?????文件???????1359??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\ex1data1.txt

?????文件????????657??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\ex1data2.txt

?????文件???????4485??2018-05-06?11:19??練習(xí)\mlclass-ex1-jin\ex1_multi.m

?????文件???????1474??2018-05-06?10:27??練習(xí)\mlclass-ex1-jin\featureNormalize.m

?????文件???????1173??2018-08-03?10:37??練習(xí)\mlclass-ex1-jin\gradientDescent.m

?????文件????????979??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\gradientDescentMulti.m

?????文件????????253??2018-08-03?22:07??練習(xí)\mlclass-ex1-jin\hello.mat

?????文件????????253??2018-08-03?22:08??練習(xí)\mlclass-ex1-jin\hello.txt

?????文件????????162??2018-08-03?22:10??練習(xí)\mlclass-ex1-jin\hello1.txt

?????文件????????180??2018-08-03?22:11??練習(xí)\mlclass-ex1-jin\hello2.txt

?????文件????????222??2018-05-01?11:32??練習(xí)\mlclass-ex1-jin\ml_login_data.mat

?????文件????????677??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\normalEqn.m

?????文件??????????0??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\OGLdpf.log

?????文件???????1051??2018-08-02?20:50??練習(xí)\mlclass-ex1-jin\plotData.m

?????文件??????15590??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\submit.m

?????文件??????10724??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\submitWeb.m

?????文件????????520??2017-10-10?08:08??練習(xí)\mlclass-ex1-jin\warmUpExercise.m

?????文件???????1045??2017-10-10?08:08??練習(xí)\mlclass-ex2-jin\costFunction.m

?????文件???????1163??2018-05-25?17:07??練習(xí)\mlclass-ex2-jin\costFunctionReg.m

?????文件???????3745??2018-08-06?20:13??練習(xí)\mlclass-ex2-jin\ex2.m

?????文件?????192780??2017-10-10?08:08??練習(xí)\mlclass-ex2-jin\ex2.pdf

?????文件???????3775??2017-10-10?08:08??練習(xí)\mlclass-ex2-jin\ex2data1.txt

?????文件???????2233??2017-10-10?08:08??練習(xí)\mlclass-ex2-jin\ex2data2.txt

?????文件???????2975??2018-05-26?22:06??練習(xí)\mlclass-ex2-jin\ex2_reg.m

?????文件????????508??2018-05-25?18:38??練習(xí)\mlclass-ex2-jin\mapFeature.m

?????文件???????1152??2018-08-06?22:08??練習(xí)\mlclass-ex2-jin\plotData.m

............此處省略132個文件信息