Depth in an Arrangement of Hyperplanes

Depth in an Arrangement of Hyperplanes
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超平面排列的深度

DOI:
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发表时间:
1999
影响因子:
0.8
通讯作者:
M. Hubert
M. Hubert
中科院分区:
数学3区
文献类型:
--
作者:
P. Rousseeuw;M. Hubert

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抽象。中的n个超平面的集合 ${Bbb R}$ d形成超平面排列。点的深度 $ {Bbb R}^d$中的heta是从θ发出的任何射线所穿过的超平面的最小数目。对于d=2,我们证明了总存在一个点θ,其深度至少 $lceil n/3 ceil$ .对于更高的维度,我们推测最大深度至少是 $lceil n/(d+1) ceil$ .对于一般位置的排列,还建立了最大深度的上界。最后,我们讨论了计算具有最大深度的点的算法。
Abstract. A collection of n hyperplanes in ${Bbb R}$ d forms a hyperplane arrangement. The depth of a point $ heta in {Bbb R}^d$ is the smallest number of hyperplanes crossed by any ray emanating from θ . For d=2 we prove that there always exists a point θ with depth at least $lceil n/3 ceil$ . For higher dimensions we conjecture that the maximal depth is at least $lceil n/(d+1) ceil$ . For arrangements in general position, an upper bound on the maximal depth is also established. Finally, we discuss algorithms to compute points with maximal depth.