The Simplex Algorithm Is NP-Mighty
The Simplex Algorithm Is NP-Mighty
复制标题
单纯形算法具有 NP 强大性
DOI:
10.1145/3280847
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Martin
中科院分区:
文献类型:
--
作者:
Disser;Skutella;Martin
We show that the Simplex Method, the Network Simplex Method—both with Dantzig’s original pivot rule—and the Successive Shortest Path Algorithm areNP-mighty. That is, each of these algorithms can be used to solve, with polynomial overhead, any problem in NP implicitly during the algorithm’s execution. This result casts a more favorable light on these algorithms’ exponential worst-case running times. Furthermore, as a consequence of our approach, we obtain several novel hardness results. For example, for a given input to the Simplex Algorithm, deciding whether a given variable ever enters the basis during the algorithm’s execution and determining the number of iterations needed are both NP-hard problems. Finally, we close a long-standing open problem in the area of network flows over time by showing that earliest arrival flows are NP-hard to obtain.
登录
查看更多内容
DOI:
10.1007/978-3-642-20807-2_16
发表时间:
2011-06
期刊:
--
影响因子:
--
作者:
Oliver Friedmann
通讯作者:
Oliver Friedmann
DOI:
--
发表时间:
1990
期刊:
Symposium on the Theory of Computing
影响因子:
--
作者:
C. Papadimitriou;A. Schäffer;M. Yannakakis
通讯作者:
M. Yannakakis
DOI:
10.1090/conm/223/03132
发表时间:
1996
期刊:
Journal of The Society for Industrial and Applied Mathematics
影响因子:
--
作者:
N. Amenta;G. Ziegler
通讯作者:
G. Ziegler
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
D. Goldfarb
通讯作者:
D. Goldfarb
DOI:
10.23638/lmcs-14(4:9)2018
发表时间:
2015
期刊:
Log. Methods Comput. Sci.
影响因子:
--
作者:
John Fearnley;Rahul Savani
通讯作者:
Rahul Savani