Changeset 1143

Timestamp:

Feb 25, 2008, 3:43:50 PM (16 years ago)

Author:

Markus Ringnér

Message:

Additional test added for #335

File:

• trunk/test/ncc_test.cc (modified) (1 diff)

trunk/test/ncc_test.cc

@@ -200 +200 @@
   }
 
+  ////////////////////////////////////////////////////////////////
+  // A test of when a class has no training samples, should give nan
+  // in predictions. 
+  ////////////////////////////////////////////////////////////////
+  //Keep only the second class in the training samples
+  std::vector<size_t> ind(2,2);
+  ind[1]=3;
+  classifier::Target target2(target1,utility::Index(ind));
+  classifier::MatrixLookupWeighted mlw3(data1,weights2,utility::Index(ind),false);
+  classifier::NCC<statistics::PearsonDistance> ncc5(mlw3,target2);
+  ncc5.train();
+  ncc5.predict(mlw1,prediction1); 
+  if (!(std::isnan(prediction1(0,0)) && std::isnan(prediction1(0,1)) && 
+        std::isnan(prediction1(0,2)) && std::isnan(prediction1(0,3)) &&
+        std::isnan(prediction1(1,0)) &&
+        fabs(prediction1(1,1)-2.0)<slack_bound &&
+        fabs(prediction1(1,2))<slack_bound &&
+        fabs(prediction1(1,3))<slack_bound)) {
+    *error << "Difference to expected prediction too large\n";
+    ok = false;
+  }
 
   //////////////////////////////////////////////////////////////////////////