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» Algorithmic Barriers from Phase Transitions
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CORR
2011
Springer
144views Education» more  CORR 2011»
13 years 8 days ago
Analyzing Walksat on random formulas
Let Φ be a uniformly distributed random k-SAT formula with n variables and m clauses. We prove that the Walksat algorithm from [16, 17] finds a satisfying assignment of Φ in pol...
Amin Coja-Oghlan, Alan M. Frieze
EVOW
2006
Springer
14 years 5 days ago
Improving Graph Colouring Algorithms and Heuristics Using a Novel Representation
Abstract. We introduce a novel representation for the graph colouring problem, called the Integer Merge Model, which aims to reduce the time complexity of an algorithm. Moreover, o...
István Juhos, Jano I. van Hemert
ICCAD
2003
IEEE
148views Hardware» more  ICCAD 2003»
14 years 5 months ago
The Compositional Far Side of Image Computation
Symbolic image computation is the most fundamental computation in BDD-based sequential system optimization and formal verification. In this paper, we explore the use of over-appr...
Chao Wang, Gary D. Hachtel, Fabio Somenzi
ALGORITHMICA
2007
93views more  ALGORITHMICA 2007»
13 years 8 months ago
Random 2-SAT with Prescribed Literal Degrees
Two classic “phase transitions” in discrete mathematics are the emergence of a giant component in a random graph as the density of edges increases, and the transition of a rand...
Colin Cooper, Alan M. Frieze, Gregory B. Sorkin
EXPCS
2007
14 years 12 days ago
Analysis of input-dependent program behavior using active profiling
Utility programs, which perform similar and largely independent operations on a sequence of inputs, include such common applications as compilers, interpreters, and document parse...
Xipeng Shen, Michael L. Scott, Chengliang Zhang, S...