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arXiv 2209.00892cs.SIcs.DSphysics.soc-ph
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基于影响力最大化的可扩展对抗攻击算法

Scalable Adversarial Attack Algorithms on Influence Maximization

Lichao Sun, Xiaobin Rui, Wei Chen

摘要:

本文研究了社交网络中动态影响力传播模型下影响力最大化的对抗攻击。特别地,给定已知的种子集S,问题是通过删除有限数量的节点和边来最小化从S传播的影响。这个问题反映了许多应用场景,例如通过隔离和疫苗接种来阻止病毒(例如COVID-19)在社交网络中的传播,通过冻结虚假账户来阻止谣言传播,或者通过激励一些用户忽略来自竞争对手的信息来攻击竞争对手的影响力。本文在线性阈值模型下,采用反向影响抽样方法,给出了有效反向可达路径的抽样算法。我们提出了三种不同的设计选择,反向采样,这都保证$1/2 - \varepsilon$近似(任何小$\varepsilon >0$)和有效的运行时间。

英文摘要:

In this paper, we study the adversarial attacks on influence maximization under dynamic influence propagation models in social networks. In particular, given a known seed set S, the problem is to minimize the influence spread from S by deleting a limited number of nodes and edges. This problem reflects many application scenarios, such as blocking virus (e.g. COVID-19) propagation in social networks by quarantine and vaccination, blocking rumor spread by freezing fake accounts, or attacking competitor's influence by incentivizing some users to ignore the information from the competitor. In this paper, under the linear threshold model, we adapt the reverse influence sampling approach and provide efficient algorithms of sampling valid reverse reachable paths to solve the problem. We present three different design choices on reverse sampling, which all guarantee $1/2 - \varepsilon$ approximation (for any small $\varepsilon >0$) and an efficient running time.

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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