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» Preprocessing of Intractable Problems
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FOCS
2005
IEEE
15 years 3 months ago
Hardness of Approximating the Closest Vector Problem with Pre-Processing
d Abstract] Mikhail Alekhnovich ∗ Subhash A. Khot † Guy Kindler ‡ Nisheeth K. Vishnoi § We show that, unless NP⊆DTIME(2poly log(n) ), the closest vector problem with pre-...
Mikhail Alekhnovich, Subhash Khot, Guy Kindler, Ni...
54
Voted
ICALP
2010
Springer
15 years 2 months ago
Preprocessing of Min Ones Problems: A Dichotomy
Min Ones Constraint Satisfaction Problems, i.e., the task of finding a satisfying assignment with at most k true variables (Min Ones SAT(Γ)), can express a number of interesting ...
Stefan Kratsch, Magnus Wahlström
CPAIOR
2007
Springer
15 years 3 months ago
Preprocessing Expression-Based Constraint Satisfaction Problems for Stochastic Local Search
Abstract. This work presents methods for processing a constraint satisfaction problem (CSP) formulated by an expression-based language, before the CSP is presented to a stochastic ...
Sivan Sabato, Yehuda Naveh
77
Voted
CORR
2010
Springer
96views Education» more  CORR 2010»
14 years 8 months ago
Parameterized Complexity Results in Symmetry Breaking
Abstract. Symmetry is a common feature of many combinatorial problems. Unfortunately eliminating all symmetry from a problem is often computationally intractable. This paper argues...
Toby Walsh
89
Voted
SIGAL
1990
221views Algorithms» more  SIGAL 1990»
15 years 1 months ago
Complexity Cores and Hard Problem Instances
Many intractable problems such as NP-complete problems (provided P = NP) have easy subproblems. In contrast, we investigate the existence and the properties of inherently hard sub...
Uwe Schöning