Information & Computer Technology |
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An adaptive ant colony system algorithm for continuous-space optimization problems |
Li Yan-jun, Wu Tie-jun |
Institute of Intelligent Systems and Decision Making, Zhejiang University, Hangzhou 310027, China |
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Abstract Ant colony algorithms comprise a novel category of evolutionary computation methods for optimization problems, especially for sequencing-type combinatorial optimization problems. An adaptive ant colony algorithm is proposed in this paper to tackle continuous-space optimization problems, using a new objective-function-based heuristic pheromone assignment approach for pheromone update to filtrate solution candidates. Global optimal solutions can be reached more rapidly by self-adjusting the path searching behaviors of the ants according to objective values. The performance of the proposed algorithm is compared with a basic ant colony algorithm and a Square Quadratic Programming approach in solving two benchmark problems with multiple extremes. The results indicated that the efficiency and reliability of the proposed algorithm were greatly improved.
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Received: 29 December 2001
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