arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0907.2423cs.CGcs.NAmath.NA
收藏

计算多维持久性

Computing Multidimensional Persistence

Gunnar Carlsson, Gurjeet Singh, Afra Zomorodian

AI总结:

本文提出一种多项式时间算法,通过将多维持久性计算转化为计算代数几何问题并利用其结构,实现高效计算。

摘要:

多维持久性理论捕捉了多重过滤(一个多参数递增空间族)的拓扑结构。多重过滤在科学数据的拓扑分析中自然出现。本文给出了一种计算多维持久性的多项式时间算法。我们将该计算重新表述为计算代数几何中的一个问题,并利用该领域的算法来解决它。虽然所得到的问题是Expspace完全的,且标准算法需要双指数时间,但我们利用多重过滤内部的结构来产生实用的算法。我们实现了文中的所有算法,并通过统计实验证明了其可行性。

英文摘要:

The theory of multidimensional persistence captures the topology of a multifiltration -- a multiparameter family of increasing spaces. Multifiltrations arise naturally in the topological analysis of scientific data. In this paper, we give a polynomial time algorithm for computing multidimensional persistence. We recast this computation as a problem within computational algebraic geometry and utilize algorithms from this area to solve it. While the resulting problem is Expspace-complete and the standard algorithms take doubly-exponential time, we exploit the structure inherent withing multifiltrations to yield practical algorithms. We implement all algorithms in the paper and provide statistical experiments to demonstrate their feasibility.

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。

↑