Abstract
Random CSPs (constraint satisfaction problems) provide interesting benchmarks for experimental evaluation of algorithms. From a theoretical point of view, a lot of recent works have contributed to guarantee the existence of a so-called phase transition and, consequently, of hard and large problem instances. From a practical point of view, due to exponential space complexity, a vast majority of experiments based on random CSPs concerns binary problems. In this paper, we introduce a model of implicit random CSPs, i.e., of random CSPs where constraints are not given in extension but defined by a predicate. This new model involves an easy implementation, no space requirement and the possibility to perform experiments with large arity constraints.
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