question: public double lnB ( ) { double lnB = - 0.5 * nu * logDetOmega - 0.5 * nu * D * Math . log ( 2 ) - 0.25 * D * ( D - 1 ) * Math . log ( Math . PI ) ; for ( int i = 1 ; i <= D ; i ++ ) { lnB -= Gamma . logGamma ( 0.5 * ( nu + 1 - i ) ) ; } return lnB ; }
target:  B is the normalizing factor of the Wishart Distribution,