Talla Nobibon, Fabrice; Cherchye, Laurens; Rock, Bram de; … - 2008
double-sum inequality,
and those that are not. A node (s;t) is called double-sum node if there exist an observation
u such … that psqs ps(qt +qu) for some observations s and t. The idea is that nodes involved
in a double-sum inequality might be … double sum inequality (that is
there exists t1 such that psqs ps(qt + qt1)), we use Dijkstra’s algorithm (Ahuja, Magnanti …