A#: A distributed version of A* for factored planning
Résumé
Factored planning consists in driving a modular
or distributed system to a target state, in an optimal manner,
assuming all actions are controllable. Such problems take the
form of path search in a product of graphs. The state space of
each component is a graph, in which one must find a path to
the local goal of this component. But when all components are
considered jointly, the problem amounts to finding a path in
each of these state graphs, while ensuring their compatibility on
the actions that must be performed jointly by some components
of the system. This paper proposes a solution under the form of
a multi-agent version of A*, assembling several A*, each one
performing a biased depth-first search in the graph of each
component.
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