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Collaborative filtering algorithm has been widely used in the electronic commerce recommendation system in recent years, but collaborative filtering algorithm also has some problems, such as data sparseness and lack of individuation, these problems affected the efficiency and accuracy of recommendation algorithm. According to the problems, this paper proposes the method of Web log analysis and user...
In modern air defense system, arranging the aerial targets in order of threat degree makes a significant impact in battlefield. Firstly it constructs the index system of threat evaluation and quantitates every index based on fuzzy membership function. Secondly it sets up comprehensive difference matrix in order to improve the sensitivity and accuracy of threat degree calculation. Thirdly it calculates...
Based on quantum particle swarm optimization algorithm (QPSO), a novel approach of constructing multi-class least squares wavelet SVM (LS-WSVM) classifiers is presented, regularization parameters and kernel parameters of LS-WSVM can be optimized. Quantum particle swarm optimization can get appropriate parameters of LS-WSVM with global search, so the LS-WSVM model for the multi-class classifiers is...
It is very important to maximize the lifetime of wireless sensor networks (WSN) operated on limited power. In order to improve the energy efficiency and prolong the network lifetime, a new clustering algorithm based on the optimum one-hop distance is presented. The relationship among the energy consumption, the device electronic energy and the one-hop transmission distance is analyzed, and then the...
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