/// <summary> /// SVM パラメータのためのグリッドを生成する /// </summary> /// <param name="paramId"></param> /// <returns></returns> #else /// <summary> /// Generates a grid for SVM parameters /// </summary> /// <param name="paramId"></param> /// <returns></returns> #endif public static CvParamGrid GetDefaultGrid(SVMParamType paramId) { var grid = new CvParamGrid(); NativeMethods.ml_CvSVM_get_default_grid(ref grid, (int)paramId); return(grid); }
/// <summary> /// SVMを最適なパラメータで学習する /// </summary> /// <param name="trainData"></param> /// <param name="responses"></param> /// <param name="varIdx"></param> /// <param name="sampleIdx"></param> /// <param name="param"></param> /// <param name="kFold">交差検定(Cross-validation)パラメータ.学習集合は,k_foldの部分集合に分割され,一つの部分集合がモデルの学習に用いられ,その他の部分集合はテスト集合となる.つまり,SVM アルゴリズムは,k_fold回実行される.</param> /// <param name="cGrid"></param> /// <param name="gammaGrid"></param> /// <param name="pGrid"></param> /// <param name="nuGrid"></param> /// <param name="coefGrid"></param> /// <param name="degreeGrid"></param> /// <param name="balanced"></param> /// <returns></returns> #else /// <summary> /// Trains SVM with optimal parameters /// </summary> /// <param name="trainData"></param> /// <param name="responses"></param> /// <param name="varIdx"></param> /// <param name="sampleIdx"></param> /// <param name="param"></param> /// <param name="kFold">Cross-validation parameter. The training set is divided into k_fold subsets, one subset being used to train the model, the others forming the test set. So, the SVM algorithm is executed k_fold times. </param> /// <param name="cGrid"></param> /// <param name="gammaGrid"></param> /// <param name="pGrid"></param> /// <param name="nuGrid"></param> /// <param name="coefGrid"></param> /// <param name="degreeGrid"></param> /// <param name="balanced"></param> /// <returns></returns> #endif public virtual bool TrainAuto( Mat trainData, Mat responses, Mat varIdx, Mat sampleIdx, CvSVMParams param, int kFold = 10, CvParamGrid? cGrid = null, CvParamGrid? gammaGrid = null, CvParamGrid? pGrid = null, CvParamGrid? nuGrid = null, CvParamGrid? coefGrid = null, CvParamGrid? degreeGrid = null, bool balanced = false) { if (trainData == null) throw new ArgumentNullException("trainData"); if (responses == null) throw new ArgumentNullException("responses"); if (varIdx == null) throw new ArgumentNullException("varIdx"); if (sampleIdx == null) throw new ArgumentNullException("sampleIdx"); trainData.ThrowIfDisposed(); responses.ThrowIfDisposed(); varIdx.ThrowIfDisposed(); sampleIdx.ThrowIfDisposed(); if (param == null) param = new CvSVMParams(); var defaultGrid = GetDefaultGrid(SVMParamType.C); var cGrid0 = cGrid.GetValueOrDefault(defaultGrid); var gammaGrid0 = gammaGrid.GetValueOrDefault(defaultGrid); var pGrid0 = pGrid.GetValueOrDefault(defaultGrid); var nuGrid0 = nuGrid.GetValueOrDefault(defaultGrid); var coefGrid0 = coefGrid.GetValueOrDefault(defaultGrid); var degreeGrid0 = degreeGrid.GetValueOrDefault(defaultGrid); return NativeMethods.ml_CvSVM_train_auto_CvMat( ptr, trainData.CvPtr, responses.CvPtr, varIdx.CvPtr, sampleIdx.CvPtr, param.NativeStruct, kFold, cGrid0, gammaGrid0, pGrid0, nuGrid0, coefGrid0, degreeGrid0, balanced ? 1 : 0) != 0; }
public static extern int ml_CvSVM_train_auto_Mat( IntPtr model, IntPtr trainData, IntPtr responses, IntPtr varIdx, IntPtr sampleIdx, WCvSVMParams param, int kFold, CvParamGrid cGrid, CvParamGrid gammaGrid, CvParamGrid pGrid, CvParamGrid nuGrid, CvParamGrid coefGrid, CvParamGrid degreeGrid, int balanced);
/// <summary> /// SVM パラメータのためのグリッドを生成する /// </summary> /// <param name="paramId"></param> /// <returns></returns> #else /// <summary> /// Generates a grid for SVM parameters /// </summary> /// <param name="paramId"></param> /// <returns></returns> #endif public static CvParamGrid GetDefaultGrid(SVMParamType paramId) { var grid = new CvParamGrid(); NativeMethods.ml_CvSVM_get_default_grid(ref grid, (int)paramId); return grid; }
public static extern int ml_CvParamGrid_check(CvParamGrid grid);
public static extern void ml_CvSVM_get_default_grid( ref CvParamGrid grid, int paramId);
public static extern int ml_CvSVM_train_auto_Mat( IntPtr model, IntPtr trainData, IntPtr responses, IntPtr varIdx, IntPtr sampleIdx, WCvSVMParams param, int kFold, CvParamGrid cGrid, CvParamGrid gammaGrid, CvParamGrid pGrid, CvParamGrid nuGrid, CvParamGrid coefGrid, CvParamGrid degreeGrid, int balanced);
public static extern int ml_CvParamGrid_check(CvParamGrid grid);
public static extern void ml_CvSVM_get_default_grid( ref CvParamGrid grid, int paramId);