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CP
2006
Springer
14 years 1 months ago
Randomization in Constraint Programming for Airline Planning
Abstract. We extend the common depth-first backtrack search for constraint satisfaction problems with randomized variable and value selection. The resulting methods are applied to ...
Lars Otten, Mattias Grönkvist, Devdatt P. Dub...
SAT
2004
Springer
117views Hardware» more  SAT 2004»
14 years 3 months ago
A Random Constraint Satisfaction Problem That Seems Hard for DPLL
Abstract. This paper discusses an NP-complete constraint satisfaction problem which appears to share many of the threshold characteristics of SAT but is similar to XOR-SAT and so i...
Harold S. Connamacher
CCECE
2006
IEEE
14 years 3 months ago
New Constraints on Generation of Uniform Random Samples from Evolutionary Trees
In this paper, we introduce new algorithms for selecting taxon samples from large evolutionary trees, maintaining uniformity and randomness, under certain new constraints on the t...
Anupam Bhattacharjee, Zalia Shams, Kazi Zakia Sult...
ICC
2007
IEEE
129views Communications» more  ICC 2007»
14 years 4 months ago
Performance Evaluation of CDMA Cellular Systems Considering both the Soft Capacity Constraint and Users' Smooth Random Mobility
— A new call admission control (CAC) strategy based on the soft capacity constraint (SCC) concept is proposed for CDMA cellular systems. The use of the SCC concept allows maximiz...
Carmen B. Rodríguez-Estrello, Felipe A. Cru...
CP
1998
Springer
14 years 2 months ago
Random Constraint Satisfaction: Theory Meets Practice
Abstract. We study the experimental consequences of a recent theoretical result by Achlioptas et al. that shows that conventional models of random problems are trivially insoluble ...
Ewan MacIntyre, Patrick Prosser, Barbara M. Smith,...