arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.0777cs.DScs.DM
收藏

带邻域约束的背包问题

The Knapsack Problem with Neighbour Constraints

Glencora Borradaile, Brent Heeringa, Gordon Wilfong

摘要:

我们研究了一个约束版本的背包问题,其中项目之间的依赖关系是由一个图的邻接。在1-neighbor背包问题中,只有当一个项目的至少一个邻居也被选择时,该项目才能被选择。在所有邻居背包问题中,只有当所有邻居都被选中时,一个项目才能被选中。当节点具有一致的和任意的权值和利润函数时,以及当依赖图是有向的和无向的时,我们给出了近似算法和硬度结果。

英文摘要:

We study a constrained version of the knapsack problem in which dependencies between items are given by the adjacencies of a graph. In the 1-neighbour knapsack problem, an item can be selected only if at least one of its neighbours is also selected. In the all-neighbours knapsack problem, an item can be selected only if all its neighbours are also selected. We give approximation algorithms and hardness results when the nodes have both uniform and arbitrary weight and profit functions, and when the dependency graph is directed and undirected.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑