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

%?======================?YOUR?CODE?HERE?======================
%?Instructions:?Compute?the?cost?of?a?particular?choice?of?theta
%???????????????You?should?set?J?to?the?cost.





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

end

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

?????文件?????517350??2012-05-19?14:09??exp\ex1.pdf

?????文件?????140906??2012-05-19?14:09??exp\ex5.pdf

?????文件?????360509??2012-05-19?14:09??exp\ex6.pdf

?????文件????????672??2012-05-19?14:09??exp\mlclass-ex1\computeCost.m

?????文件????????711??2012-05-19?14:09??exp\mlclass-ex1\computeCostMulti.asv

?????文件????????711??2012-05-19?14:09??exp\mlclass-ex1\computeCostMulti.m

?????文件???????3441??2012-05-19?14:09??exp\mlclass-ex1\ex1.m

?????文件???????1359??2012-05-19?14:09??exp\mlclass-ex1\ex1data1.txt

?????文件????????657??2012-05-19?14:09??exp\mlclass-ex1\ex1data2.txt

?????文件???????4455??2012-05-19?14:09??exp\mlclass-ex1\ex1_multi.m

?????文件???????1323??2012-05-19?14:09??exp\mlclass-ex1\featureNormalize.asv

?????文件???????1381??2012-05-19?14:09??exp\mlclass-ex1\featureNormalize.m

?????文件???????1049??2012-05-19?14:09??exp\mlclass-ex1\gradientDescent.asv

?????文件???????1043??2012-05-19?14:09??exp\mlclass-ex1\gradientDescent.m

?????文件???????1149??2012-05-19?14:09??exp\mlclass-ex1\gradientDescentMulti.asv

?????文件???????1149??2012-05-19?14:09??exp\mlclass-ex1\gradientDescentMulti.m

?????文件????????655??2012-05-19?14:09??exp\mlclass-ex1\normalEqn.asv

?????文件????????646??2012-05-19?14:09??exp\mlclass-ex1\normalEqn.m

?????文件????????956??2012-05-19?14:09??exp\mlclass-ex1\plotData.m

?????文件???????9121??2012-05-19?14:09??exp\mlclass-ex1\submit.m

?????文件??????10733??2012-05-19?14:09??exp\mlclass-ex1\submitWeb.m

?????文件????????517??2012-05-19?14:09??exp\mlclass-ex1\warmUpExercise.m

?????文件?????478304??2012-05-19?14:09??exp\mlclass-ex1（不用交）.zip

?????文件???????6772??2012-05-19?14:09??exp\mlclass-ex5\ex5.asv

?????文件???????6772??2012-05-19?14:09??exp\mlclass-ex5\ex5.m

?????文件???????1321??2012-05-19?14:09??exp\mlclass-ex5\ex5data1.mat

?????文件????????510??2012-05-19?14:09??exp\mlclass-ex5\featureNormalize.m

?????文件???????8742??2012-05-19?14:09??exp\mlclass-ex5\fmincg.m

?????文件???????2568??2012-05-19?14:09??exp\mlclass-ex5\learningCurve.asv

?????文件???????2778??2012-05-19?14:09??exp\mlclass-ex5\learningCurve.m

............此處省略49個文件信息