Simulated annealing in convex bodies and an O*(n4) volume algorithm

被引:122
|
作者
Lovász, L
Vempala, S
机构
[1] MIT, Dept Math, Cambridge, MA 02139 USA
[2] Microsoft Res, Redmond, WA 98052 USA
基金
美国国家科学基金会;
关键词
convex bodies; volume computation; random walks; simulated annealing; logconcave functions;
D O I
10.1016/j.jcss.2005.08.004
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
We present a new algorithm for computing the volume of a convex body in R-n. The main ingredients of the algorithm are (i) a "morphing" technique that can be viewed as a variant of simulated annealing and (ii) a new rounding algorithm to put a convex body in near-isotropic position. The complexity is O*(n(4)), improving on the previous best algorithm by a factor of n. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码:392 / 417
页数:26
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