Naiwen Liu

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File sharing and replication presents a challenging issue due to the unreliability nature of the wide area network. Peer-to-Peer systems are emerging as a new paradigm for structuring large-scale distributed systems. Different architectures of Peer-to-Peer systems, inherent with some advantages and disadvantages, have been proposed for applications such as(More)
In this paper, the authors present a greedy search algorithm that solves the SVM classification (SVC) problem at the lowermost C end. By combining the SVC asymptotic behavior with empirical results, it can be sure that at sufficiently small cost, a threshold C0, all the minority samples becomes support vectors each with Lagrange multiplier C0, and equal(More)
Shark-search and HITS are the classical algorithms of subject crawler. Aiming at the phenomenon of the theme drift in HITS algorithm and the noise link in Shark-search algorithm, a new topic crawling strategy for improving Shark-search and HITS algorithm is proposed. Firstly, analyzed the depth of the web page and adopt the VIPS (vision-based page(More)
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