산업경영시스템학회지 (Journal of Korean Society of Industrial and Systems Engineering)
- 제24권62호
- /
- Pages.21-32
- /
- 2001
- /
- 2005-0461(pISSN)
- /
- 2287-7975(eISSN)
2차원 길로틴 절단문제를 위한 새로운 상한
A New Upper Bound for Two-Dimensional Guillotine Cutting Problem
초록
The two-dimensional guillotine cutting problem is to maximize sum of piece profits that cut from one stock rectangle and widely applied in the industry. The branch-and-bound method for this problem uses complementarily several upper bounds(the Gilmore and Gomoryp[8]'s two-dimensional knapsack function and the Hifi and Zissimopoulos[10]'s method using one-dimensional knapsack problem, etc) to reduce the number of searched nodes. These upper bounds has a shortcoming that does not consider the bound and layout of pieces simultaneously. In this paper, we propose an efficient upper bound which can complement the shortcoming of existing upper bounds. The proposed upper bound needs less memory spaces and computing time. Computational results show that the proposed upper bound significantly contribute to reduce the computational amount of time and number of searched nodes in tree.
키워드