Changeset 1076
 Timestamp:
 Feb 12, 2008, 2:51:11 PM (13 years ago)
 Location:
 trunk
 Files:

 2 edited
Legend:
 Unmodified
 Added
 Removed

trunk/test/ncc_test.cc
r1075 r1076 134 134 } 135 135 136 136 ////////////////////////////////////////////////////////////////////////// 137 // A test of predictions using weighted training resulting in NaN's 138 // in centroids and unweighted test data 139 ////////////////////////////////////////////////////////////////////////// 140 *error << "test of predictions using nan centroids and unweighted test data\n"; 141 utility::matrix weights2(3,4,1.0); 142 weights2(1,0)=weights2(1,1)=0.0; 143 classifier::MatrixLookupWeighted mlw2(data1,weights2); 144 classifier::NCC<statistics::EuclideanDistance> ncc2(mlw2,target1); 145 ncc2.train(); 146 ncc2.predict(ml1,prediction1); 147 result1(0,0)=result1(0,1)=result1(1,2)=result1(1,3)=sqrt(3.0); 148 result1(1,0)=result1(1,1)=sqrt(11.0); 149 result1(0,2)=result1(0,3)=sqrt(15.0); 150 slack = deviation(prediction1,result1); 151 if (slack > slack_bound  std::isnan(slack)){ 152 *error << "Difference to expected prediction too large\n"; 153 *error << "slack: " << slack << std::endl; 154 *error << "expected less than " << slack_bound << std::endl; 155 ok = false; 156 } 137 157 138 158 ////////////////////////////////////////////////////////////////////////// 
trunk/yat/classifier/NCC.h
r1050 r1076 198 198 } 199 199 for(size_t c=0;c<target_.nof_classes();c++) { 200 (*centroids_)(i,c) = class_averager[c].mean(); 201 if(class_averager[c].sum_w()==0) 200 if(class_averager[c].sum_w()==0) { 202 201 centroids_nan_=true; 202 (*centroids_)(i,c) = std::numeric_limits<double>::quiet_NaN(); 203 } 204 else { 205 (*centroids_)(i,c) = class_averager[c].mean(); 206 } 203 207 } 204 208 } … … 235 239 if (const MatrixLookup* test_unweighted = 236 240 dynamic_cast<const MatrixLookup*>(&test)) { 237 // If weighted training data resultingin NaN in centroids: weighted calculations241 // If weighted training data has resulted in NaN in centroids: weighted calculations 238 242 if(centroids_nan_) { 239 // predict_weighted(MatrixLookupWeighted(*test_unweighted),prediction); 240 std::string str = 241 "Error in NCC<Distance>::predict: weighted training unweighted test not implemented yet"; 242 throw std::runtime_error(str); 243 predict_weighted(MatrixLookupWeighted(*test_unweighted),prediction); 243 244 } 244 245 // If unweighted training data: unweighted calculations
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