Abstract
We present a new and more efficient heuristic by restricting lookahead saturation (LAS) with NVO (neighbourhood variable ordering) and DEW (dynamic equality weighting). We report on the integration of this heuristic in Satz, a high-performance SAT solver, showing empirically that it significantly improves the performance on an extensive range of benchmark problems that exhibit hard structure.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Li, C.M., Anbulagan, A.: Heuristics based on unit propagation for satisfiability problems. In: Proceedings of 15th IJCAI, Nagoya, Aichi, Japan, pp. 366–371 (1997)
Anbulagan, A.: Extending unit propagation look-ahead of DPLL procedure. In: Zhang, C., Guesgen, H.W., Yeap, W.-K. (eds.) PRICAI 2004. LNCS (LNAI), vol. 3157, pp. 173–182. Springer, Heidelberg (2004)
Bessière, C., Debruyne, R.: Theoretical analysis of singleton arc consistency. In: ECAI 2004 Workshop on Modeling and Solving Problems with Constraints, Valencia, Spain, pp. 20–29 (2004)
Selman, B., Kautz, H., McAllester, D.: Ten challenges in propositional reasoning and search. In: Proceedings of 15th IJCAI, Nagoya, Aichi, Japan, pp. 50–54 (1997)
Warners, J.P., van Maaren, H.: A two-phase algorithm for solving a class of hard satisfiability problems. Operations Research Letters 23, 81–88 (1998)
Li, C.M.: Integrating equivalency reasoning into Davis-Putnam procedure. In: Proceedings of 17th AAAI, USA, pp. 291–296. AAAI Press, Menlo Park (2000)
Ostrowski, R., Grégoire, E., Mazure, B., Sais, L.: Recovering and exploiting structural knowledge from CNF formulas. In: Van Hentenryck, P. (ed.) CP 2002. LNCS, vol. 2470, pp. 185–199. Springer, Heidelberg (2002)
Heule, M., van Maaren, H.: Aligning CNF- and equivalence-reasoning. In: Hoos, H.H., Mitchell, D.G. (eds.) SAT 2004. LNCS, vol. 3542, pp. 145–156. Springer, Heidelberg (2005)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Anbulagan, Slaney, J. (2005). Lookahead Saturation with Restriction for SAT. In: van Beek, P. (eds) Principles and Practice of Constraint Programming - CP 2005. CP 2005. Lecture Notes in Computer Science, vol 3709. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11564751_53
Download citation
DOI: https://doi.org/10.1007/11564751_53
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-29238-8
Online ISBN: 978-3-540-32050-0
eBook Packages: Computer ScienceComputer Science (R0)