arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math/0206125math.OC
收藏

线性可行性问题的松弛算法、新组合算法和多项式算法

Relaxation, New Combinatorial and Polynomial Algorithms for the Linear Feasibility Problem

Ulrich Betke

摘要:

本文考虑齐次线性可行性问题,在单位球面上寻找一个满足$n$线性不等式$a_i^Tx\ge 0$的$x$.为了解决这个问题,我们考虑的中心的球面的平面,其方面是由一个子集的约束。从而为线性可行性问题找到了一个新的组合算法。如果我们允许重新缩放,这个算法就变成了多项式。我们指出,该算法解决以及更一般的凸可行性问题。此外,数值实验说明了该算法的实用性.

英文摘要:

We consider the homogenized linear feasibility problem, to find an $x$ on the unit sphere, satisfying $n$ line ar inequalities $a_i^Tx\ge 0$. To solve this problem we consider the centers of the insphere of spherical simpl ices, whose facets are determined by a subset of the constraints. As a result we find a new combinatorial algor ithm for the linear feasibility problem. If we allow rescaling this algorithm becomes polynomial. We point out that the algorithm solves as well the more general convex feasibility problem. Moreover numerical experiments s how that the algorithm could be of practical interest.

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。

↑