package?classification;

//代價函數
public?class?LR_Cost_Function?{
	public?static?double?cost（double?theta[][]?double?X[][]?double?y[][]?double?lambda）?{
		double?J?=?0.0;
		double?m?=?X.length;//?這里m=178
		double[][]?hypothesis?=?LR_Sigmoid.s（MOs.mMulti（X?theta））;//?激活函數值178*1

		double[][]?J1?=?MOs.mMulti（MOs.transpose（y）?MOs.log（hypothesis））;
		double[][]?J2?=?MOs.mMulti（MOs.transpose（MOs.mMinus（1?y））?MOs.log（MOs.mMinus（1?hypothesis）））;
		double[][]?J3?=?MOs.mMulti（MOs.mPlus（J1?J2）?-1?/?m）;//?J1、J2、J3名為數組，其實都只有一個數

		//J?=?J3[0][0];

		///?*****引入正則化參數lambda*****///
		double?pt?=?0.0;//?引入懲罰項?penalty?term
		pt?=?（double）?lambda?/?（2?*?m）?*?（MOs.sum（MOs.pow（theta?2））?-?Math.pow（theta[0][0]?2））;//theta從1開始，theta[0][1]不參與正則化
		J?=?J3[0][0]?+?pt;
		
		return?J;
	}

}

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

?????文件????????279??2017-11-16?11:02??數據挖掘wine分類實驗報告及代碼\wine\.classpath

?????文件????????380??2017-12-03?10:05??數據挖掘wine分類實驗報告及代碼\wine\.project

?????文件???????1035??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\LR_Cost_Function.class

?????文件????????776??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\LR_Feature_Scaling.class

?????文件????????877??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\LR_Gradient_Descent.class

?????文件????????521??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\LR_Sigmoid.class

?????文件???????8135??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\MOs.class

?????文件????????611??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\NB_Gaussian_Distribution.class

?????文件????????849??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\NB_Gaussian_Value.class

?????文件???????1372??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\NB_Get_MV.class

?????文件???????4908??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\wqNaiveBayesian.class

?????文件???????5896??2018-05-04?22:16??數據挖掘wine分類實驗報告及代碼\wine\bin\classification\wqRegularizedLogisticRegression.class

?????文件??????35981??2017-11-16?10:48??數據挖掘wine分類實驗報告及代碼\wine\Jama.jar

?????文件????????858??2017-12-05?22:13??數據挖掘wine分類實驗報告及代碼\wine\src\classification\LR_Cost_Function.java

?????文件????????611??2017-12-05?20:29??數據挖掘wine分類實驗報告及代碼\wine\src\classification\LR_Feature_Scaling.java

?????文件????????765??2017-12-05?22:13??數據挖掘wine分類實驗報告及代碼\wine\src\classification\LR_Gradient_Descent.java

?????文件????????208??2017-12-05?15:16??數據挖掘wine分類實驗報告及代碼\wine\src\classification\LR_Sigmoid.java

?????文件???????8198??2017-12-05?15:16??數據挖掘wine分類實驗報告及代碼\wine\src\classification\MOs.java

?????文件????????281??2017-12-05?13:17??數據挖掘wine分類實驗報告及代碼\wine\src\classification\NB_Gaussian_Distribution.java

?????文件????????556??2017-12-06?12:48??數據挖掘wine分類實驗報告及代碼\wine\src\classification\NB_Gaussian_Value.java

?????文件???????1275??2017-12-06?11:33??數據挖掘wine分類實驗報告及代碼\wine\src\classification\NB_Get_MV.java

?????文件???????5574??2017-12-06?13:21??數據挖掘wine分類實驗報告及代碼\wine\src\classification\wqNaiveBayesian.java

?????文件???????7044??2017-12-06?13:27??數據挖掘wine分類實驗報告及代碼\wine\src\classification\wqRegularizedLogisticRegression.java

?????文件??????10782??2008-10-23?08:26??數據挖掘wine分類實驗報告及代碼\wine.data

?????文件??????27612??2017-12-06?13:54??數據挖掘wine分類實驗報告及代碼\WineNaiveBayesianClassification.jar

?????文件??????27625??2017-12-06?13:55??數據挖掘wine分類實驗報告及代碼\WineRegularizedLogisticRegression.jar

?????文件?????452442??2018-05-16?21:51??數據挖掘wine分類實驗報告及代碼\實驗報告.doc

?????目錄??????????0??2018-05-16?21:49??數據挖掘wine分類實驗報告及代碼\wine\bin\classification

?????目錄??????????0??2018-05-16?21:49??數據挖掘wine分類實驗報告及代碼\wine\src\classification

?????目錄??????????0??2018-05-16?21:49??數據挖掘wine分類實驗報告及代碼\wine\bin

............此處省略6個文件信息