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Self Assessment-Based Decision Making for Multiagent Cooperative Search

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2 Author(s)
Sujit, P.B. ; Dept. of Electr. & Comput. Eng., Univ. of Porto, Porto, Portugal ; Ghose, D.

This paper addresses a search problem with multiple limited capability search agents in a partially connected dynamical networked environment under different information structures. A self assessment-based decision-making scheme for multiple agents is proposed that uses a modified negotiation scheme with low communication overheads. The scheme has attractive features of fast decision-making and scalability to large number of agents without increasing the complexity of the algorithm. Two models of the self assessment schemes are developed to study the effect of increase in information exchange during decision-making. Some analytical results on the maximum number of self assessment cycles, effect of increasing communication range, completeness of the algorithm, lower bound and upper bound on the search time are also obtained. The performance of the various self assessment schemes in terms of total uncertainty reduction in the search region, using different information structures is studied. It is shown that the communication requirement for self assessment scheme is almost half of the negotiation schemes and its performance is close to the optimal solution. Comparisons with different sequential search schemes are also carried out.

Published in:

Automation Science and Engineering, IEEE Transactions on  (Volume:8 ,  Issue: 4 )

Date of Publication:

Oct. 2011

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