question: protected void updateStatsForConditionalDensityEstimator ( ConditionalDensityEstimator classifier , Instance classMissing , double classValue ) throws Exception { if ( m_PriorEstimator == null ) { setNumericPriorsFromBuffer ( ) ; } m_SumSchemeEntropy -= classifier . logDensity ( classMissing , classValue ) * classMissing . weight ( ) / Utils . log2 ; m_SumPriorEntropy -= m_PriorEstimator . logDensity ( classValue ) * classMissing . weight ( ) / Utils . log2 ; }
target:  Updates stats for conditional density estimator based on current test instance.