مدلهای برنامه ریزی خطی عدد صحیح برای مشکل سهام skiving

We consider the one-dimensional skiving stock problem which is strongly related to the dual bin packing problem: find the maximum number of items with minimum length L   that can be constructed by connecting a given supply of m∈Nm∈N smaller item lengths l1,…,lml1,…,lm with availabilities b1,…,bmb1,…,bm. For this optimization problem, we present three new models (the arcflow model, the onestick model, and a model of Kantorovich-type) and investigate their relationships, especially regarding their respective continuous relaxations. To this end, numerical computations are provided. As a main result, we prove the equivalence between the arcflow model, the onestick approach and the existing pattern-oriented standard model. In particular, this equivalence is shown to hold for the corresponding continuous relaxations, too.