Enumeration of PLCP-orientations of the 4-cube
Enumeration of PLCP-orientations of the 4-cube
复制标题
4 立方体 PLCP 方向的枚举
DOI:
10.1016/j.ejc.2015.03.010
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发表时间:
2015
影响因子:
1
通讯作者:
Lorenz Klaus and Hiroyuki Miyata
中科院分区:
文献类型:
--
作者:
Endo M;Iwamoto M;Sugawara M;Araki Y;Mori T;Shimizu K;Setsu N;Kobayashi E;Tanzawa Y;Nakatani F;Chuman H;Higashi T;Kawai A.;疋田理奈,東堀紀尚,福岡裕樹,宮本順,川元龍夫,森山啓司;Lorenz Klaus and Hiroyuki Miyata
The linear complementarity problem (LCP) provides a unified approach to many problems such as linear programs, convex quadratic programs, and bimatrix games. The general LCP is known to be NP-hard, but there are some promising results that suggest the possibility that the LCP with a P-matrix (PLCP) may be polynomial-time solvable. However, no polynomial-time algorithm for the PLCP has been found yet and the computational complexity of the PLCP remains open. Simple principal pivoting (SPP) algorithms, also known as Bard-type algorithms, are candidates for polynomial-time algorithms for the PLCP. In 1978, Stickney and Watson interpreted SPP algorithms as a family of algorithms that seek the sink of unique-sink orientations of n-cubes. They performed the enumeration of the arising orientations of the 3-cube, hereafter called PLCP-orientations. In this paper, we present the enumeration of PLCP-orientations of the 4-cube. The enumeration is done via construction of oriented matroids generalizing P-matrices and realizability classification of oriented matroids. Some insights obtained in the computational experiments are presented as well.
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DOI:
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发表时间:
1992
期刊:
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影响因子:
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