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bugfix: do not allow null interval in hypervolume diff metric

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This commit is contained in:
Johann Dreo 2013-06-06 11:43:34 +02:00
commit b619a85718
2 changed files with 17 additions and 3 deletions
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2
eo/src/utils/eoRealBounds.h
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@ -234,7 +234,7 @@ public :
assert( repRange >= 0 ); assert( repRange >= 0 );
#ifndef NDEBUG #ifndef NDEBUG
if( repRange == 0 ) { if( repRange == 0 ) {
eo::log << eo::warnings << "Null range in eoRealBounds (min=" << _min << ", max=" << _max << ")" << std::endl; eo::log << eo::warnings << "Warning: null range in eoRealBounds (min=" << _min << ", max=" << _max << ")" << std::endl;
} }
#endif #endif
} }

18
moeo/src/metric/moeoHyperVolumeDifferenceMetric.h
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@ -163,12 +163,26 @@ class moeoHyperVolumeDifferenceMetric : public moeoVectorVsVectorBinaryMetric <
min = std::min(min, _set2[j][i]); min = std::min(min, _set2[j][i]);
max = std::max(max, _set2[j][i]); max = std::max(max, _set2[j][i]);
} }
bounds[i] = eoRealInterval(min, max); if( min == max ) {
bounds[i] = eoRealInterval(min-tiny(), max+tiny());
} else {
bounds[i] = eoRealInterval(min, max);
}
} }
} }
} }
private: protected:
/**
* Returns a very small value that can be used to avoid extreme cases (where the min bound == the max bound)
*/
static double tiny()
{
return 1e-6;
}
private:
/*boolean indicates if data must be normalized or not*/ /*boolean indicates if data must be normalized or not*/
bool normalize; bool normalize;