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GECCO
2007
Springer
166views Optimization» more  GECCO 2007»
14 years 1 months ago
Comparison of tree and graph encodings as function of problem complexity
In this paper, we analyze two general-purpose encoding types, trees and graphs systematically, focusing on trends over increasingly complex problems. Tree and graph encodings are ...
Michael D. Schmidt, Hod Lipson
DAM
1999
81views more  DAM 1999»
13 years 7 months ago
On the Complexity of Hamiltonian Path and Cycle Problems in Certain Classes of Digraphs
We survey results on the sequential and parallel complexity of hamiltonian path and cycle problems in various classes of digraphs which generalize tournaments. We give detailed in...
Jørgen Bang-Jensen, Gregory Gutin
CC
2007
Springer
158views System Software» more  CC 2007»
13 years 7 months ago
The Complexity of Membership Problems for Circuits Over Sets of Natural Numbers
Abstract. The problem of testing membership in the subset of the natural numbers produced at the output gate of a {∪, ∩,− , +, ×} combinational circuit is shown to capture a...
Pierre McKenzie, Klaus W. Wagner
SIGAL
1990
221views Algorithms» more  SIGAL 1990»
13 years 11 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
CC
2006
Springer
147views System Software» more  CC 2006»
13 years 7 months ago
Complexity of Ring Morphism Problems
Abstract. We study the complexity of the isomorphism and automorphism problems for finite rings. We show that both integer factorization and graph isomorphism reduce to the problem...
Neeraj Kayal, Nitin Saxena