基于网络问答社区的专家排名算法分析

摘要

Q&A community has become one of the important ways to get knowledge on the Internet.In this paper, we analyze the network structure of the Q&A community and find that it is different from the general social network structure.Then we use Z-score,PageRank and HITS the three ranking algorithm to sort the user influence to find the authority of the community of experts.Finally,we analyze the ranking results of the three methods and conclude that the network structure of the group influences the accuracy of algorithm greatly,and establish the "best performance" net-work model.%问答社区已经成为网络上快速获取知识的重要途径之一.本文首先对问答社区的网络结构进行了分析,发现了它和一般社交网络结构的区别,同时总结出了该类社群用户的一些行为特征.然后利用Z-score、PageRank以及HITS等三个排名算法进行用户影响力排序来寻找社群的权威专家.最后,对三种方法的排名结果进行了分析,得出了群社网络结构对排名算法准确性的影响较大,并建立了不同算法的"最佳表现"网络模型.