Considerable progress has recently been made in using clause weighting algorithms such as DLM and SDF to solve SAT benchmark
problems. While these algorithms have outperformed earlier stochastic techniques on many larger problems, this improvement
has been bought at the cost of extra parameters and the complexity of fine tuning these parameters to obtain optimal run-time
performance. This paper examines the use of parameters, specifically in relation to DLM, to identify underlying features in
clause weighting that can be used to eliminate or predict workable parameter settings. To this end we propose and empirically
evaluate a simplified clause weighting algorithm that replaces the tabu list and flat moves parameter used in DLM. From this
we show that our simplified clause weighting algorithm is competitive with DLM on the four categories of SAT problem for whichDLMhas
already been optimised.
Keywords Constraints - Search