arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1205.1682cs.SIcs.DSphysics.soc-ph
收藏

连续时间扩散网络的影响力最大化

Influence Maximization in Continuous Time Diffusion Networks

Manuel Gomez Rodriguez, Bernhard Schölkopf

摘要:

在一个扩散网络中寻找最优的源节点集,在有限的时间内最大限度地传播信息、影响和疾病,这个问题极大地依赖于网络的底层时间动态。然而,迄今为止,这在很大程度上仍未得到探索。为此,给定一个网络及其时间动态,我们首先描述连续时间马尔可夫链如何允许我们分析计算从一组源节点开始的扩散过程所到达的节点的平均总数。然后,我们表明,选择一组最有影响力的源节点在连续时间的影响力最大化问题是NP-难的,并开发一个有效的近似算法,可证明的近最优性能。合成和真实扩散网络上的实验表明,我们的算法优于其他国家的最先进的算法至少~20%,是在不同的网络拓扑结构的鲁棒性。

英文摘要:

The problem of finding the optimal set of source nodes in a diffusion network that maximizes the spread of information, influence, and diseases in a limited amount of time depends dramatically on the underlying temporal dynamics of the network. However, this still remains largely unexplored to date. To this end, given a network and its temporal dynamics, we first describe how continuous time Markov chains allow us to analytically compute the average total number of nodes reached by a diffusion process starting in a set of source nodes. We then show that selecting the set of most influential source nodes in the continuous time influence maximization problem is NP-hard and develop an efficient approximation algorithm with provable near-optimal performance. Experiments on synthetic and real diffusion networks show that our algorithm outperforms other state of the art algorithms by at least ~20% and is robust across different network topologies.

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。

↑