Degraeve, Z.

problem production sizing model research period solution algorithm constraint demand product inventory management capacity capacitated heuristic lot sizing scheduling planning journal lot-sizing european journal decision column variable operation science lot sizing problem management science formulation number operations research lot sizing problems lagrange result component degraeve period t level wolsey decomposition lagrange relaxation price relaxation european approach schedule lot sizing models network machine scheduling problem swets content distribution production planning programming review subproblem system value product i reformulation bound distribution multi-item setup dantzig-wolfe decomposition dantzig-wolfe uncapacitated integer column generation extension optimization quantity generation structure commonality damar lotsizing modeling capacity constraints horizon