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arXiv 1809.00152cs.SIcs.CR
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链接预测算法的攻击容忍度:如何在社交网络中隐藏您的关系

Attack Tolerance of Link Prediction Algorithms: How to Hide Your Relations in a Social Network

Marcin Waniek, Kai Zhou, Yevgeniy Vorobeychik, Esteban Moro, Tomasz P. Michalak, Talal Rahwan

摘要:

链接预测是网络分析中的基本研究问题之一。直观地说,它涉及到识别最有可能被添加到给定网络的边,或者实际上存在的网络中似乎缺少的边。在过去的几十年中,已经提出了各种算法来解决这个问题。尽管有这些好处,但这些算法引起了严重的隐私问题,因为它们可能被用来暴露两个希望保持私人关系的人之间的联系。考虑到这一点,我们调查的能力,这样的个人逃避链接预测算法。更准确地说,我们研究他们的能力,战略性地改变他们的连接,以增加的概率,他们的一些连接仍然无法识别的链接预测算法。我们将这个问题形式化为一个优化问题,并证明了寻找最优解是NP完全的。尽管有这种困难,我们表明,在实践中,情况并不暗淡。特别是,我们提出了两个可以很容易地应用于现有的社交媒体上的一般公众成员的知识。我们证明了这些算法在各种网络上的有效性,并对过多的链接预测算法。

英文摘要:

Link prediction is one of the fundamental research problems in network analysis. Intuitively, it involves identifying the edges that are most likely to be added to a given network, or the edges that appear to be missing from the network when in fact they are present. Various algorithms have been proposed to solve this problem over the past decades. For all their benefits, such algorithms raise serious privacy concerns, as they could be used to expose a connection between two individuals who wish to keep their relationship private. With this in mind, we investigate the ability of such individuals to evade link prediction algorithms. More precisely, we study their ability to strategically alter their connections so as to increase the probability that some of their connections remain unidentified by link prediction algorithms. We formalize this question as an optimization problem, and prove that finding an optimal solution is NP-complete. Despite this hardness, we show that the situation is not bleak in practice. In particular, we propose two heuristics that can easily be applied by members of the general public on existing social media. We demonstrate the effectiveness of those heuristics on a wide variety of networks and against a plethora of link prediction algorithms.

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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