Impala Documentation

virtual double Impala::Core::Training::RecallAtN::Compute ( Table::AnnotationTableBaseType * table ) [inline, virtual]

Reimplemented from Impala::Core::Training::Evaluation.

Definition at line 31 of file RecallAtN.h.

References Impala::Core::Table::TableTem< Col1T, Col2T, Col3T, Col4T, Col5T, Col6T, Col7T, Col8T, Col9T >::Get1(), Impala::Core::Table::AnnotationTable::IsPositive(), Impala::Core::Training::Evaluation::mAnnotation, mN, mTotalRelevance, Impala::Core::Table::Table::Size(), and Impala::Core::Table::Sort().

00032     {
00033         Sort(table, 2, false);
00034 
00035         int positiveCount=0;
00036         for(int i=0 ; i<table->Size() && i<mN ; i++)
00037         {
00038             Quid q = table->Get1(i);
00039             if(mAnnotation->IsPositive(q))
00040                 positiveCount++;
00041         }
00042         double recall = ((double)positiveCount)/((double)mTotalRelevance);
00043         return recall;
00044     }

Here is the call graph for this function: