I have data set X = {x_1, x_2, ldots, x_N}, each x_i
is a d-dimensional vector, where scalars are from some finite field
(In practice they are categories, represented by integers from 1...C).
If my data would be 1-d, then multinomial density would be ok to model it.
How do I extend it to multidimensional case? If scalars in vector are iid, then
I guess, I could just model it by d-product of multinomial densities? Did I miss something?
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