multi_pars_cal: Auxiliary function to mml_with_parents() and...
In kelvinyangli/mbmml: Learn Markov blankets using Minimum Message Length

This is an auxiliary function to both mml_with_parents() and mml_with_parents_fast() when the target node has multiple parents.

1 2	multi_pars_cal(indexListPerNodePerValue, commonParentsIndices, arityChild, targetIndex, alpha)

`indexListPerNodePerValue`	A list of stored indices for each value of each node. It is obtained by the function count_occurance().
`commonParentsIndices`	commonParentsIndices
`arityChild`	arityChild
`targetIndex`	Index of the target node.
`alpha`	A vector of concentration parameters for a Dirichlet distribution. Range is from zeor to positive infinity, length is equal to the arity of the target variable.