| Real64 Impala::Core::Table::AveragePrecisionJudged | ( | T * | rank, | |
| AnnotationTable * | groundTruth, | |||
| bool | skipIsNegative, | |||
| int | topN = -1, |
|||
| bool | apOfFoundOnly = false | |||
| ) | [inline] |
AP on judged elements only, i.e.
non-labeled quids are eliminated from the ranking. skipIsNegative indicates whether skips count as negative or are eliminated too. In case rank contains only a subset of relative to groundTruth, AP may be adjusted by setting apOfFoundOnly to true.
Assumes that the first column of T contains Quids.
Definition at line 50 of file AveragePrecision.h.
References Impala::Core::Table::AnnotationTable::GetIndex(), Impala::Core::Table::AnnotationTable::GetNrPositive(), ILOG_VAR, Impala::Core::Table::AnnotationTable::IsNegative(), Impala::Core::Table::AnnotationTable::IsPositive(), Impala::Application::DemoCamera2d::precision, and Impala::Core::Table::Table::Size().
Referenced by Impala::Application::Util::DoScoreConcepts(), Impala::Application::Util::DoScoreConceptsVideo(), and Impala::Visualization::SimilarityTableSetRank::HandleUpdate().
00053 { 00054 ILOG_VAR(Impala.Core.Table.AveragePrecision); 00055 Real64 ap = 0; 00056 int positiveCount = 0; 00057 int curRank = 0; 00058 if (topN == -1) 00059 topN = rank->Size(); 00060 for (int i=0 ; i<topN ; i++) 00061 { 00062 Quid q = rank->Get1(i); 00063 int qIndex = groundTruth->GetIndex(q); 00064 if (qIndex == groundTruth->Size()) // not annotated 00065 continue; 00066 if (groundTruth->IsPositive(qIndex)) 00067 { 00068 positiveCount++; 00069 double precision = ((double)positiveCount)/((double)(curRank+1)); 00070 ap += precision; 00071 } 00072 if (groundTruth->IsPositive(qIndex) || skipIsNegative 00073 || groundTruth->IsNegative(qIndex)) 00074 { 00075 curRank++; 00076 } 00077 } 00078 int factor = (apOfFoundOnly) ? positiveCount : groundTruth->GetNrPositive(); 00079 if (factor > 0) 00080 ap /= factor; 00081 return ap; 00082 }
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