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107
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ISAAC
1993
Springer
149views Algorithms» more  ISAAC 1993»
15 years 1 months ago
The Complexity of the Optimal Variable Ordering Problems of Shared Binary Decision Diagrams
A binary decision diagram (BDD) is a directed acyclic graph for representing a Boolean function. BDD’s are widely used in various areas which require Boolean function manipulatio...
Seiichiro Tani, Kiyoharu Hamaguchi, Shuzo Yajima
ATAL
2010
Springer
14 years 10 months ago
Pure Nash equilibria: complete characterization of hard and easy graphical games
We consider the computational complexity of pure Nash equilibria in graphical games. It is known that the problem is NP-complete in general, but tractable (i.e., in P) for special...
Albert Xin Jiang, MohammadAli Safari
68
Voted
ESA
2006
Springer
137views Algorithms» more  ESA 2006»
15 years 1 months ago
Deciding Relaxed Two-Colorability - A Hardness Jump
A coloring is proper if each color class induces connected components of order one (where the order of a graph is its number of vertices). Here we study relaxations of proper two-c...
Robert Berke, Tibor Szabó
IWPEC
2009
Springer
15 years 4 months ago
On the Directed Degree-Preserving Spanning Tree Problem
In this paper we initiate a systematic study of the Reduced Degree Spanning Tree problem, where given a digraph D and a nonnegative integer k, the goal is to construct a spanning o...
Daniel Lokshtanov, Venkatesh Raman, Saket Saurabh,...
STOC
2007
ACM
117views Algorithms» more  STOC 2007»
15 years 9 months ago
A combinatorial, primal-dual approach to semidefinite programs
Semidefinite programs (SDP) have been used in many recent approximation algorithms. We develop a general primal-dual approach to solve SDPs using a generalization of the well-know...
Sanjeev Arora, Satyen Kale