dot-marginCombo function

Rcpp function to compute sum of rows and couple according to alphavec

.marginCombo(alphavec, mc)

Arguments

• alphavec: vector of Dirichlet allocations (must be a vector of integers)
• mc: a matrix of Archimedean vectors to share of dimension sum(alphavec)

Returns

a matrix of dimension n by length(alphavec) with combined data