The ultimate interval graph recognition algorithm?

Given a digraph G=(V,A), a subset X of V is an interval of G if for a,b@__ __X and v@__ __V@__ __X, (a,v)@__ __A if and only if (b,v)@__ __A, and similarly for (v,a) and (v,b). For instance, 0@__ __, V and {v}, v@__ __V, are intervals of G called ...

A tournament is an orientation of a complete graph. A directed graph is an interval digraph if for each vertex v there corresponds an ordered pair of intervals (S_v, T_v) such that u → v if and only if S_u ∩ T_v ≠ ∅. A bipartite graph is an interval bigraph ...

In this article, we present a Local Global Graph (LGG) method for recognizing facial expressions from static images irrespective of different illumination conditions, shadows and cluttered backgrounds. First, a neural color constancy based skin ...