DocumentCode :
2849011
Title :
Distributed constraint satisfaction algorithm for complex local problems
Author :
Yokoo, Makoto ; Hirayama, Katsutoshi
Author_Institution :
NTT Commun. Sci. Labs., Kyoto, Japan
fYear :
1998
fDate :
3-7 Jul 1998
Firstpage :
372
Lastpage :
379
Abstract :
A distributed constraint satisfaction problem can formalize various application problems in MAS, and several algorithms for solving this problem have been developed. One limitation of these algorithms is that they assume each agent has only one local variable. Although simple modifications enable these algorithms to handle multiple local variables, obtained algorithms are neither efficient nor scalable to larger problems. We develop a new algorithm that can handle multiple local variables efficiently, which is based on the asynchronous weak-commitment search algorithm. In this algorithm, a bad local solution can be modified without forcing other agents to exhaustively search local problems. Also, the number of interactions among agents can be decreased since agents communicate only when they find local solutions that satisfy all of the local constraints. Experimental evaluations show that this algorithm is far more efficient than an algorithm that uses the prioritization among agents
Keywords :
constraint handling; cooperative systems; distributed algorithms; problem solving; search problems; software agents; MAS; agent interactions; agent prioritization; asynchronous weak-commitment search algorithm; complex local problems; distributed constraint satisfaction algorithm; multiple local variables; problem solving; Artificial intelligence; Computational modeling; Computer architecture; Concurrent computing; Constraint theory; Distributed algorithms; Distributed processing; Iterative algorithms; Laboratories; Multiagent systems; Resource management;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multi Agent Systems, 1998. Proceedings. International Conference on
Conference_Location :
Paris
Print_ISBN :
0-8186-8500-X
Type :
conf
DOI :
10.1109/ICMAS.1998.699222
Filename :
699222
Link To Document :
بازگشت