question: @ Override public double conf ( double totalWeight , double totalPositiveWeight , Hypothesis hypo , double delta ) { double g = hypo . getCoveredWeight ( ) / totalWeight ; double p = hypo . getPositiveWeight ( ) / hypo . getCoveredWeight ( ) ; double sg = variance ( g , totalWeight ) ; double sp = variance ( p , hypo . getCoveredWeight ( ) ) ; double inverseNormal = inverseNormal ( 1.0d - delta / 2.0d ) ; return 2.0d * sg * inverseNormal + sg * sg * Math . pow ( inverseNormal , 2.0d ) + sp * inverseNormal + 2.0d * sg * sp * Math . pow ( inverseNormal , 2.0d ) + sp * sg * sg * Math . pow ( inverseNormal , 3.0d ) ; }
target:  Calculate confidence intervall for a specific rule. 