Error Control in Polytope Computations

Error Control in Polytope Computations
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多面体计算中的误差控制

DOI:
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发表时间:
2002
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通讯作者:
S. Veres
S. Veres
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文献类型:
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作者:
S. Veres

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本文提出了凸壳数值计算的解决方案,提出了保证逻辑一致性和准确性的计算算法。一个完整的数值误差分析。结果表明,一个全局的顶点-小面邻接的错误界不存在逻辑上一致的程序。为了科普实际需求,顶点预处理多面体计算介绍了使用点和超平面调整。一个全球范围内的顶点小平面邻接误差的影响,全球范围内的顶点,公式给出了一个保守的选择全球误差界。
This paper presents solutions for numerical computation on convex hulls; computational algorithms that ensure logical consistency and accuracy are proposed. A complete numerical error analysis is presented. It is shown that a global error bound for vertex-facet adjacency does not exist under logically consistent procedures. To cope with practical requirements, vertex preconditioned polytope computations are introduced using point and hyperplane adjustments. A global bound on vertex-facet adjacency error is affected by the global bound on vertices; formulas are given for a conservative choice of global error bounds.