Proceedings of the 2014 Federated Conference on DOI: 10.15439/2014F395 Computer Science and Information Systems pp. 1477–1485 ACSIS, Vol. 2 S-MASA: A Stigmergy Based Algorithm for Multi-Target Search Ouarda Zedadra and Hamid Seridi Nicolas Jouandeau Giancarlo Fortino LabSTIC Laboratory, 8 may 1945 University Advanced Computing laboratory DIMES, Universita’ P.O.Box 401, 24000 Guelma, Algeria of saint-Denis Paris 8 University della Calabria Department of computer science Badji Mokhtar Saint Denis 93526, France Via P. Bucci, cubo 41c - 87036 Annaba University P.O.Box 12, 23000 Annaba, Algeria Email:
[email protected] - Rende (CS) - Italy Email: zedadra nawel1,
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[email protected] Abstract—We explore the on-line problem of coverage where 1) it is of very low computational complexity, in which multiple agents have to find a target whose position is unknown, agents have a very low-range of sensors; and without a prior global information about the environment. 2) it executes a search in nearby locations first by adopting In this paper a novel algorithm for multi-target search is described, it is inspired from water vortex dynamics and based spiral turns around the starting cell and around agents on the principle of pheromone-based communication. Accord- each other; ing to this algorithm, called S-MASA (Stigmergic Multi Ant 3) agents use stigmergic communication via digital Search Area), the agents search nearby their base incrementally pheromone; using turns around their center and around each other, until 4) it can be executed on known or unknown static obstacle- the target is found, with only a group of simple distributed cooperative Ant like agents, which communicate indirectly via free environments or obstacle environments.