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arXiv 1204.4491cs.SIphysics.soc-ph
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社交网络中的影响力最大化

On Budgeted Influence Maximization in Social Networks

Huy Nguyen, Rong Zheng

摘要:

给定用于选择每个节点的预算和任意成本,预算影响力最大化(BIM)问题涉及选择一组种子节点来传播一些信息,该信息以不超过预算的总成本最大化社交网络中受影响的节点的总数(称为影响扩散)。我们提出的BIM问题的种子选择算法保证了近似比(1 - 1/sqrt(e))。种子选择算法需要计算候选种子集的影响扩散,这是已知的#P-复合。识别贝叶斯网络中的边缘概率的计算和影响传播之间的联系,我们设计了有效的启发式算法后一个问题。使用大规模社交网络和合成生成的网络的实验表明,该算法具有优越的性能与适度的计算成本。此外,合成数据集允许我们改变网络参数,并获得关于图结构对不同算法性能的影响的重要见解。

英文摘要:

Given a budget and arbitrary cost for selecting each node, the budgeted influence maximization (BIM) problem concerns selecting a set of seed nodes to disseminate some information that maximizes the total number of nodes influenced (termed as influence spread) in social networks at a total cost no more than the budget. Our proposed seed selection algorithm for the BIM problem guarantees an approximation ratio of (1 - 1/sqrt(e)). The seed selection algorithm needs to calculate the influence spread of candidate seed sets, which is known to be #P-complex. Identifying the linkage between the computation of marginal probabilities in Bayesian networks and the influence spread, we devise efficient heuristic algorithms for the latter problem. Experiments using both large-scale social networks and synthetically generated networks demonstrate superior performance of the proposed algorithm with moderate computation costs. Moreover, synthetic datasets allow us to vary the network parameters and gain important insights on the impact of graph structures on the performance of different 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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