Cone superadditivity of discrete convex functions
Cone superadditivity of discrete convex functions
复制标题
离散凸函数的锥超可加性
DOI:
10.1007/s10107-011-0447-1
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
K. Murota and R. Weismantel
中科院分区:
文献类型:
--
作者:
Y. Kobayashi;K. Murota and R. Weismantel
A functionfis said to be cone superadditive if there exists a partition ofRninto a family of polyhedral convex cones such thatf(z+x) +f(z+y) ≤f(z) +f(z+x+y) holds wheneverxandybelong to the same cone in the family. This concept is useful in nonlinear integer programming in that, if the objective function is cone superadditive, the global minimality can be characterized by local optimality criterion involving Hilbert bases. This paper shows cone superadditivity of L-convex and M-convex functions with respect to conic partitions that are independent of particular functions. L-convex and M-convex functions in discrete variables (integer vectors) as well as in continuous variables (real vectors) are considered.
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影响因子:
2.7
作者:
R. Hemmecke;S. Onn;R. Weismantel
通讯作者:
R. Weismantel
DOI:
10.1016/j.orl.2003.11.007
发表时间:
2004
期刊:
Oper. Res. Lett.
影响因子:
--
作者:
K. Murota;Hiroo Saito;R. Weismantel
通讯作者:
R. Weismantel
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
P. Gordan
通讯作者:
P. Gordan
影响因子:
1.1
作者:
Jon Lee;S. Onn;R. Weismantel
通讯作者:
R. Weismantel
影响因子:
2.7
作者:
U. Haus;M. Köppe;R. Weismantel
通讯作者:
R. Weismantel