Adaptive approach heuristics for the generalized assignment problem Export

@techreport{gap-ant-lourenco, abstract = {The Generalized Assignment Problem consists in assigning a set of tasks to a set of agents with minimum cost. Each agent has a limited amount of a single resource and each task must be assigned to one and only one agent, requiring a certain amount of the resource of the agent. We present new metaheuristics for the generalized assignment problem based on hybrid approaches. One metaheuristic is a MAX-MIN Ant System (MMAS), an improved version of the Ant System, which was recently proposed by Stutzle and Hoos to combinatorial optimization problems, and it can be seen has an adaptive sampling algorithm that takes in consideration the experience gathered in earlier iterations of the algorithm. Moreover, the latter heuristic is combined with local search and tabu search heuristics to improve the search. A greedy randomized adaptive search heuristic (GRASP) is also proposed. Several neighborhoods are studied, including one based on ejection chains that produces good moves without increasing the computational effort. We present computational results of the comparative performance, followed by concluding remarks and ideas on future research in generalized assignment related problems.}, author = {Louren\c{c}o, Helena R. and Serra, Daniel}, citeulike-article-id = {4849592}, citeulike-linkout-0 = {http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.100.2569}, journal = {Economic Working Papers Series No.304, Universitat Pompeu Fabra, Dept. of Economics and Management}, keywords = {ant-system, gap, grasp}, posted-at = {2009-06-15 01:12:45}, priority = {1}, title = {Adaptive approach heuristics for the generalized assignment problem}, url = {http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.100.2569}, year = {1998} }

TY - RPRT ID - gap-ant-lourenco L3 - citeulike-article-id:4849592 N2 - The Generalized Assignment Problem consists in assigning a set of tasks to a set of agents with minimum cost. Each agent has a limited amount of a single resource and each task must be assigned to one and only one agent, requiring a certain amount of the resource of the agent. We present new metaheuristics for the generalized assignment problem based on hybrid approaches. One metaheuristic is a MAX-MIN Ant System (MMAS), an improved version of the Ant System, which was recently proposed by Stutzle and Hoos to combinatorial optimization problems, and it can be seen has an adaptive sampling algorithm that takes in consideration the experience gathered in earlier iterations of the algorithm. Moreover, the latter heuristic is combined with local search and tabu search heuristics to improve the search. A greedy randomized adaptive search heuristic (GRASP) is also proposed. Several neighborhoods are studied, including one based on ejection chains that produces good moves without increasing the computational effort. We present computational results of the comparative performance, followed by concluding remarks and ideas on future research in generalized assignment related problems. JF - Economic Working Papers Series No.304, Universitat Pompeu Fabra, Dept. of Economics and Management TI - Adaptive approach heuristics for the generalized assignment problem KW - ant-system KW - gap KW - grasp AU - Lourenço, Helena AU - Serra, Daniel PY - 1998/// UR - http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.100.2569 ER -