Publication Details

SELECT * FROM publications WHERE Record_Number=11230
Reference TypeConference Proceedings
Author(s)Tateo, D.; Banfi, J.; Riva, A.; Amigoni, F.; Bonarini, A.
TitleMultiagent Connected Path Planning: PSPACE-Completeness and How to Deal with It
Journal/Conference/Book TitleThirty-Second AAAI Conference on Artificial Intelligence (AAAI2018)
KeywordsMultiagent Path Planning; Connected Path Planning; Planning on graphs
AbstractIn the Multiagent Connected Path Planning problem (MCPP), a team of agents moving in a graph-represented environment must plan a set of start-goal joint paths which ensures global connectivity at each time step, under some communication model. The decision version of this problem asking for the existence of a plan that can be executed in at most a given number of steps is claimed to be NP-complete in the literature. The NP membership proof, however, is not detailed. In this paper, we show that, in fact, even deciding whether a feasible plan exists is a PSPACE-complete problem. Furthermore, we present three algorithms adopting different search paradigms, and we empirically show that they may efficiently obtain a feasible plan, if any exists, in different settings.
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