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With the rapid development of network information technology, the text is as a basic information carrier and begins to present exponential growth. The existing text classification methods haven't got information from the vast amounts of information resources timely and accurately. In order to solve the problem, the paper puts forward a new method about text categorization. It is a KNN algorithm based...
Based on the fixed fairness algorithms, this paper considering the maximization of throughout in networks. Transforming the problem of allocation of bandwidth in centralized scheduling into a question of optimization of fairly allocate the rate, and then simplify it into linear programming problem. So an uplink fair alogrithms based on centralized scheduling is proposed. We use NS2 as the simulation...
The scale issue is one of the most important theory problems in digital terrain analysis and geo-science analysis. The accurate extraction of DEM terrain parameters according to right DEM analysis scale and the acquisition of the experienced threshold of DEM modeling rely on the selection of the optimal analysis window size. Current research indicates that the analysis window size is hard to accurately...
The coverage problem is always important and difficult in WSN. This paper firstly analyzes the classical algorithm of the coverage-preserving nodes scheduling scheme (CPNSS) of the WSN. Then we propose a new improvement algorithm (NIA) which focuses on the problem of its low-efficiency and energy-imbalance. We divide all the nodes into several independent sets, and each set can cover all the area...
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