Hoesel, C.P.M. van

value problem production solution period function algorithm approximation instance machine result cost functions processing polynomial model period t scheme number polynomial approximation scheme capacitated lot-sizing processing time section approximation scheme production plan interval setup production cost functions complexity assignment theorem programming algorithm van hoesel approach lot-sizing problem proposition programming n-job instance proof job 1 inventory scheduling breakpoint expression wagelman problem instance research budget backlogging level polynomial time method permutation approximation algorithm subproblem schedule reassignment points processing times capacity integer n-job list scheduling rule single-item point production periods sizing wagelmans / int paper setup costs analysis hoesel management search formula heuristic change order b j al bla b buag lpt rule