2 function(Input, AlphaIn, BetaIn, EmpiricalR, NumOfGroups, log)
5 BetaVect=do.call(c,sapply(1:length(BetaIn),function(i)rep(BetaIn[i],NumOfGroups[i]),simplify=F))
6 SampleNum=dim(Input)[2]
8 ChooseParam1=round(Input+EmpiricalR-1)
9 roundInput=round(Input)
10 EachChoose=sapply(1:SampleNum, function(i)lchoose(ChooseParam1[,i], roundInput[,i]))
12 SumEachIso=rowSums(Input)
13 param1=AlphaIn + rowSums(EmpiricalR)
14 param2=BetaVect + SumEachIso
15 LogConst=rowSums(EachChoose)+lbeta(param1, param2)-lbeta(AlphaIn, BetaVect)
18 if (log==F) FinalResult=exp(LogConst)
19 if (log==T) FinalResult=LogConst