Dynamic Potential Search — A New Bounded Suboptimal Search
Daniel Gilon, Ariel Felner, Roni Stern
2021Proceedings of the International Symposium on Combinatorial Search24 citationsDOIOpen Access PDF
Abstract
Potential Search (PS) is an algorithm that is designed to solve bounded cost search problems. In this paper, we modify PS to work within the framework of bounded suboptimal search and introduce Dynamic Potential Search (DPS). DPS uses the idea of PS but modifies the bound to be the product of the minimal f-value in OPEN and the required suboptimal bound. We study DPS and its attributes. We then experimentally compare DPS to WA* and to EES on a variety of domains and study parameters that affect the behavior of these algorithms.In general we show that in domains with unit edge costs (e.g., many standard benchmarks) DPS significantly outperforms WA* and EES but there are exceptions.
Topics & Concepts
Bounded functionSearch algorithmVariety (cybernetics)Mathematical optimizationComputer scienceBeam searchProduct (mathematics)Upper and lower boundsValue (mathematics)Search costMathematicsAlgorithmArtificial intelligenceMachine learningEconomicsMathematical analysisMicroeconomicsGeometryMetaheuristic Optimization Algorithms ResearchAuction Theory and ApplicationsWater resources management and optimization