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.

h?=?X?*?theta;
J?=?1/（2*m）?*?sum（（h-y）.^2）;



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

end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-03-10?16:09??吳恩達機器學習編程作業\
?????目錄???????????0??2017-12-21?22:05??吳恩達機器學習編程作業\編程作業\
?????目錄???????????0??2017-11-30?22:03??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\
?????目錄???????????0??2017-11-30?22:03??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\
?????文件?????????675??2017-11-17?16:32??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\computeCost.m
?????文件?????????671??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\computeCostMulti.m
?????文件????????3908??2017-03-19?22:50??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\ex1.m
?????文件????????1359??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\ex1data1.txt
?????文件?????????657??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\ex1data2.txt
?????文件????????4460??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\ex1_multi.m
?????文件????????1249??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\featureNormalize.m
?????文件?????????952??2017-11-17?16:48??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\gradientDescent.m
?????文件?????????933??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\gradientDescentMulti.m
?????目錄???????????0??2017-11-30?22:03??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\
?????目錄???????????0??2017-11-30?22:03??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\
?????文件????????1624??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\AUTHORS.txt
?????文件????????3862??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\ChangeLog.txt
?????文件?????????881??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\jsonopt.m
?????文件????????1551??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\LICENSE_BSD.txt
?????文件???????18732??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\loadjson.m
?????文件???????15574??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\loadubjson.m
?????文件?????????771??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\mergestruct.m
?????文件???????19369??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\README.txt
?????文件???????17462??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\savejson.m
?????文件???????16123??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\saveubjson.m
?????文件????????1094??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\jsonlab\varargin2struct.m
?????文件????????1195??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\makeValidFieldName.m
?????文件????????5562??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\lib\submitWithConfiguration.m
?????文件?????????645??2017-03-13?18:40??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\normalEqn.m
?????文件????????3331??2017-11-17?16:06??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\octave-workspace
?????文件????????1046??2017-11-17?16:05??吳恩達機器學習編程作業\編程作業\machine-learning-ex1\ex1\plotData.m
............此處省略251個文件信息