arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.03078math.OCcs.DM
收藏

多权函数的逆最优化问题

Inverse optimization problems with multiple weight functions

Kristóf Bérczi, Lydia Mirabel Mendoza-Cadena, Kitti Varga

摘要:

我们引入了一类新的逆最优化问题,其中的输入解决方案是连同$k$线性权函数,和目标是修改的权重由相同的偏差向量$p$,使输入解决方案成为最优的关于他们中的每一个,同时最小化$\|p\|_1$。特别是,我们集中在三个问题与多个权函数:逆最短$s$ - $t$路径,逆二分完美匹配,逆树形问题。利用LP对偶,我们给出了最优偏差向量的$\ell_1$ -范数的极小极大刻画。此外,我们表明,最佳的$p$不一定是完整的,即使当权函数是这样的,因此计算最优解是显着更困难的单加权的情况下。我们也给出了一个充要条件的最佳偏差向量,只改变输入解的元素上的值的存在,从而给出了一个统一的理解以前的结果树形和匹配。

英文摘要:

We introduce a new class of inverse optimization problems in which an input solution is given together with $k$ linear weight functions, and the goal is to modify the weights by the same deviation vector $p$ so that the input solution becomes optimal with respect to each of them, while minimizing $\|p\|_1$. In particular, we concentrate on three problems with multiple weight functions: the inverse shortest $s$-$t$ path, the inverse bipartite perfect matching, and the inverse arborescence problems. Using LP duality, we give min-max characterizations for the $\ell_1$-norm of an optimal deviation vector. Furthermore, we show that the optimal $p$ is not necessarily integral even when the weight functions are so, therefore computing an optimal solution is significantly more difficult than for the single-weighted case. We also give a necessary and sufficient condition for the existence of an optimal deviation vector that changes the values only on the elements of the input solution, thus giving a unified understanding of previous results on arborescences and matchings.

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。

↑