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arXiv 2202.01525cs.SIcs.DB
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动态网络中的可靠社区搜索

Reliable Community Search in Dynamic Networks

Yifu Tang, Jianxin Li, Nur Al Hasan Haldar, Ziyu Guan, Jiajie Xu, Chengfei Liu

摘要:

搜索本地社区是一个重要的研究问题,支持先进的数据分析,在各种复杂的网络,如社交网络,协作网络,蜂窝网络等,随着时间的推移,这种网络的演变,激发了一些最近的研究,以确定本地社区的动态网络。然而,这些研究仅仅利用不相交的结构信息的聚集来衡量社区的质量,而忽略了社区在连续时间段内的可靠性。为了填补这一研究空白,本文提出了一种新的加权动态网络中的$(θ,k)$可靠社区(CRC)模型,并定义了\textit{most reliable community search}问题,该问题耦合了连接强度、内聚结构连续性和最大成员参与度等期望性质.为了解决这个问题,我们首先开发了一种新的边缘过滤的基础上在线CRC搜索算法,可以有效地过滤掉琐碎的边缘信息,从网络中,同时搜索一个\textit{reliable}社区。此外,我们提出了一个索引结构,加权核心森林索引(WCF索引),并设计了一个基于索引的动态规划CRC搜索算法,可以修剪大量的无关紧要的中间结果,并支持高效的查询处理。最后,我们进行了广泛的实验,系统地证明了我们提出的算法的效率和有效性的八个真实的数据集在不同的实验设置。

英文摘要:

Searching for local communities is an important research problem that supports advanced data analysis in various complex networks, such as social networks, collaboration networks, cellular networks, etc. The evolution of such networks over time has motivated several recent studies to identify local communities in dynamic networks. However, these studies only utilize the aggregation of disjoint structural information to measure the quality and ignore the reliability of the communities in a continuous time interval. To fill this research gap, we propose a novel $(θ,k)$-$core$ reliable community (CRC) model in the weighted dynamic networks, and define the problem of \textit{most reliable community search} that couples the desirable properties of connection strength, cohesive structure continuity, and the maximal member engagement. To solve this problem, we first develop a novel edge filtering based online CRC search algorithm that can effectively filter out the trivial edge information from the networks while searching for a \textit{reliable} community. Further, we propose an index structure, Weighted Core Forest-Index (WCF-index), and devise an index-based dynamic programming CRC search algorithm, that can prune a large number of insignificant intermediate results and support efficient query processing. Finally, we conduct extensive experiments systematically to demonstrate the efficiency and effectiveness of our proposed algorithms on eight real datasets under various experimental settings.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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