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Zhang Y.,The 63rd Research Institute | Pan C.,PLA University of Science and Technology | Cai Y.-M.,PLA University of Science and Technology | Kang G.-Q.,Communication Command Academy
Jiefangjun Ligong Daxue Xuebao/Journal of PLA University of Science and Technology (Natural Science Edition) | Year: 2011

In the existing cooperative transmission scheme, the spectrum efficiency is dropped for higher energy efficiency. A cooperative inter-cluster scheme based on code superposition was proposed to improve the energy efficiency without decreasing the spectrum efficiency. The total energy consumption of the inter-cluster cooperative scheme and that of the proposed scheme with the same spectrum efficiency were analyzed. Theoretical analysis and simulation results show that the proposed scheme can obtain higher energy efficiency than the existing cooperative scheme. Source

Shi F.-L.,National University of Defense Technology | Shi F.-L.,Engineering University of Armed Police Force | Xu Y.-P.,The 63rd Research Institute | Yang F.,National University of Defense Technology
Kongzhi yu Juece/Control and Decision | Year: 2013

By analyzing group decision making processes, it is proposed that there may be some interactions among experts' preferences which can be described by fuzzy measures, and a group decision making method with interactions among experts' preferences is proposed. The method is based on the resemblance degree between the experts' knowledge and between the experts' comparison matrices, and the 2-additive fuzzy measures are calculated to represent the importance of experts. Choquet integral is used as the aggregation operators to obtain group's preference. Finally, an example of naval submarine demonstration is given to show the feasibility and rationality of the proposed method. Source

Li K.-Q.,PLA University of Science and Technology | Li K.-Q.,The 63rd Research Institute | Diao X.-C.,The 63rd Research Institute | Cao J.-J.,The 63rd Research Institute | Li F.,Representative Office of the 714 Factory
Jiefangjun Ligong Daxue Xuebao/Journal of PLA University of Science and Technology (Natural Science Edition) | Year: 2010

To reflect the overall impact of feature subset on the classification result and remove the noise features, a new high-precision method was proposed for text feature selection based on the improved ant colony optimization algorithm. A mathematical model for feature selection was established to realize the direct correlation between the feature selection process and the classifier classification process. A new model-solving method composed of the optimized feature selection step and the refined feature selection step was designed and the computational complexity in the process of model solving reduced. A new improved ant colony optimization algorithm based on equivalent routes and local search which improved the quality and stability of the problem solution was proposed. The experiment results on the two datasets show the superiority of the proposed method over the current feature selection methods in terms of classification accuracy. Source

Zhang X.-Y.,The 63rd Research Institute | Deng B.,The 63rd Research Institute | Ding K.,The 63rd Research Institute
Jiefangjun Ligong Daxue Xuebao/Journal of PLA University of Science and Technology (Natural Science Edition) | Year: 2010

The existing enterprise service bus (ESB) systems can hardly meet the practical application requirements of enterprises in complex event processing. An event stream processing engine based ESB platform was proposed to solve this problem. On the basis of the relational algebra based complex event processing model, the definitions and elaborations of complex event processing based ESB platform and event stream processing engine, as well as the main algorithms and their performance analysis of complex event process, were given. Simulations and comparison between this platform and the existing ESB system were made to prove the validity of the platform in complex event processing. Source

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