mbi.marginal_oracles.sum_product

mbi.marginal_oracles.sum_product(factors: list[~mbi.factor.Factor], dom: ~mbi.domain.Domain, einsum_fn=<function einsum>) → Factor

Compute the sum-of-products of a list of Factors using einsum.

Parameters:

• factors – A list of Factors.

• dom – The target domain of the output factor.

Returns:

sum_{S - D} prod_i F_i, where

• F_i = factors[i]

• D = dom

• S = union of domains of F_i