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Given a data set P and a query set Q, a group nearest group (GNG) query returns a k-subset M of P such that M minimizes the total distance cost from each query point in Q to its closest point in M. In this paper we extend the GNG query to its dynamic version, which is called continuous group nearest group (CGNG) query. A hill climbing schemed algorithm, ADM, is proposed to efficiently solve CGNG problem...
This paper proposes an Immune Particle Swarm Optimization (IPSO) algorithm and a model of grid task scheduling based on satisfaction rate that address multi-objective optimization problems of task scheduling in dynamic and heterogeneous grid environments. The IPSO algorithm is implemented in simulation environment of grid task scheduling according to the objective function based on satisfaction rate...
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