Probabilistic Analysis of the Grassmann Condition Number
Probabilistic Analysis of the Grassmann Condition Number
复制标题
格拉斯曼条件数的概率分析
DOI:
10.1007/s10208-013-9178-4
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发表时间:
2015
影响因子:
3
通讯作者:
P. Bürgisser
中科院分区:
文献类型:
--
作者:
D. Amelunxen;P. Bürgisser
We analyze the probability that a random m-dimensional linear subspace of R^n both intersects a regular closed convex cone C⊆R^n and lies within distance α of an m-dimensional subspace not intersecting C (except at the origin). The result is expressed in terms of the spherical intrinsic volumes of the cone C. This allows us to perform an average analysis of the Grassmann condition number for the homogeneous convex feasibility problem∃ x∈ C∖ 0: Ax= 0. The Grassmann condition number is a geometric version of Renegar’s condition number, which we have introduced recently in Amelunxen and Bürgisser (SIAM J. Optim. 22 (3): 1029–1041 (2012)). We thus give the first average analysis of convex programming that is not restricted to linear programming. In particular, we prove that if the entries of A∈R^m*n are chosen iid standard normal, then for any regular cone C, we have. The proofs rely on various techniques from Riemannian geometry applied to Grassmann manifolds.
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DOI:
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发表时间:
2003
期刊:
影响因子:
--
作者:
Javier F. Pena
通讯作者:
Javier F. Pena
DOI:
10.1007/978-3-642-38896-5
发表时间:
2013-08
期刊:
--
影响因子:
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DOI:
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发表时间:
2016
期刊:
影响因子:
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作者:
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DOI:
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1950
期刊:
影响因子:
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作者:
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L. Santaló
影响因子:
3.1
作者:
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