Disco—Novo—GoGo: Integrating Local Search and Complete Search with Restarts

Meinolf Sellmann and Carlos Ansótegui

A hybrid algorithm is devised to boost the performance of complete search on under-constrained problems. We suggest to use random variable selection in combination with restarts, augmented by a coarse-grained local search algorithm that learns favorable value heuristics over the course of several restarts. Numerical results show that this method can speed-up complete search by orders of magnitude.