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求解MEB问题的一种SMO-型方法 被引量:9

An SMO-type method for solving the MEB problem
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摘要 目的求解n维空间中m个点的最小闭包球(MEB)问题。方法基于序列最小优化(SMO)的方法,提出了一种近似算法,求解MEB问题的一个(1+ε)-近似。结果建立了此算法的计算复杂度为O(mn/ε),并且算法最终得到一个独立于m,n的大小为O(1/ε)的核心集。结论数值结果表明对于求解高精度的大规模问题,算法是很有效的。 Aim To solve the minimum enclosing ball(MEB) problem of m points in n dimensions.Methods Based on the approach of sequential minimal optimization(SMO),an approximation algorithm for the MEB problem is proposed,in order to get a(1+ε)-approximation to the MEB problem.Results This algorithm computes a(1+ε)-approximation to MEB in O(mn/ε) arithmetic operations and achieves a core set of size O(1/ε),which is independent of both m and n.Conclusion The numerical results demonstrate the efficiency of the method for solving large-scale problem with a high degree of accuracy.
出处 《西北大学学报(自然科学版)》 CAS CSCD 北大核心 2010年第6期965-969,共5页 Journal of Northwest University(Natural Science Edition)
基金 国家自然科学基金资助项目(61072144) 中央高校基本科研业务费基金资助项目(JY10000970004)
关键词 最小闭包球 序列最小优化 近似算法 计算复杂度 核心集 minimum enclosing balls sequential minimal optimization approximation algorithms computational complexity core sets
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参考文献9

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二级参考文献5

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