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To make up for the deficiency of single algorithm for solving Job Shop problem and improve the quality of solutions, a novel parallel hybrid algorithm search method is proposed. Genetic Algorithm (GA) and Particle Swarm Algorithm (PSO) are both adopted to search in parallel way, and Migration Operator is adopted to achieve the intercommunication between them. Within limited time, several best solutions...
XML becomes widely used in Web applications and Database systems. XML also is an important medium in pervasive computing. While, XML data may contain incomplete information as its own characters which are tree type structure, different schemas in heterogeneous databases and non-standard operations of normal users. This incomplete information can bring some unexpected effectives in operations like...
We propose an efficiency-score based heuristic algorithm (ESHT) for p-cycle based multicast tree protection. Results show that the capacity-efficiency of ESHT is close to that of ILP-based algorithms, but with much reduced computational time.
Feature extraction (FE) methods have been proved to be very effective for dimension reduction, but the features attained are meaningless. In order to exploit the effectiveness of FE methods to support feature selection (FS), this paper proposed a new FS approach for clustering based on principal component analysis (PCA) called PS. It first uses PCA to transform the data from original feature space...
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