Partial information decomposition

Partial Information Decomposition is an extension of information theory, that aims to generalize the pairwise relations described by information theory to the interaction of multiple variables. It has been shown, however, that Partial Information Decomposition is mathematically not an extension of classical information theory as core properties/axioms of classical information theory can generally not be simultaneously fulfilled for Partial Information Decomposition.

Source: Wikipedia — Partial information decomposition (CC BY-SA 4.0)