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Articles by Weili Wang
Total Records ( 2 ) for Weili Wang
  Lieping Zhang , Weili Wang and Zhaoliang Liao
  In view of the problem of traditional funneling-MAC protocol, an improved funneling-MAC protocol based on broadcast mechanism is proposed in this study. The listening/sleeping scheduling scheme of broadcast mechanism is introduced to the funneling-MAC protocol. In the proposed funneling-MAC protocol, the nodes are notified in advance when they were the receivers of packets and the node is active only when it is the sender or the receiver and it just got into sleep during other time. So it could avoid on idle listening, overhearing and collision as more as possible. The NS-2 simulation results indicate that the funneling-MAC protocol based on broadcast mechanism is better than the traditional funneling-MAC protocol and it can effectively reduce the system power consumption and maintain higher channel utilization.
  Wen Li , Weili Wang and Ling Chai
  As one of the important techniques in large-scale data organizing, text categorization has been widely investigated. But the existing hierarchical classification methods often suffer from inter-level error transmission, namely blocking. In this paper, blocking distribution based topology reconstruction method was proposed for hierarchical text categorization problem. Firstly, blocking distribution recognition technique is put forward to mining out the serious high-level misclassification class. Subsequently, original hierarchical structure are reconstructed using blocking direction information obtained ahead, which increasing the path for the blocking instance to the correct subclass. Experimental studies on Chinese text classification benchmark Tan Corp, demonstrate that the proposed algorithm performs better than the traditional hierarchical and state-of-the-art flat classification strategies.
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