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arXiv 2003.09816cs.SIcs.DB
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影响力最大化的解分布:三种数学方法的高级实验研究

The Solution Distribution of Influence Maximization: A High-level Experimental Study on Three Algorithmic Approaches

Naoto Ohsaka

摘要:

影响力最大化是社会影响力分析中最基本的算法问题之一。在过去的十年中,大量的努力一直致力于开发有效的算法,影响力最大化,使确定“最佳”的算法已成为一项艰巨的任务。在SIGMOD'17中,Arora,Galhotra和Ranu报告了11种现有算法的基准测试结果,并证明没有一种最先进的算法可以在计算效率和解决方案质量之间提供最佳权衡。在本文中,我们报告了一个高层次的实验研究三个完善的算法方法影响力最大化,称为一击,快照,和反向影响采样(RIS)。与Arora等人不同,我们的实验方法是这样设计的,我们检查随机解决方案的分布,表征样本数量和实际解决方案质量之间的关系,并避免实现依赖性。主要研究结果如下:1.对于一个足够大的样本数,我们得到一个唯一的解决方案,无论算法。2. Oneshot、Snapshot和RIS的平均解质量以相同的速率提高,直到样本数量的缩放。3. OneShot比Snapshot需要更多的样本,而Snapshot比RIS需要更少但更大的样本。我们讨论的时间效率时,条件的Oneshot,快照,RIS是相同的精度。我们的结论是,Oneshot只适用于可用内存的大小是有限的,RIS是更有效的比快照的大型网络;快照是更可取的小,低概率的网络。

英文摘要:

Influence maximization is among the most fundamental algorithmic problems in social influence analysis. Over the last decade, a great effort has been devoted to developing efficient algorithms for influence maximization, so that identifying the ``best'' algorithm has become a demanding task. In SIGMOD'17, Arora, Galhotra, and Ranu reported benchmark results on eleven existing algorithms and demonstrated that there is no single state-of-the-art offering the best trade-off between computational efficiency and solution quality. In this paper, we report a high-level experimental study on three well-established algorithmic approaches for influence maximization, referred to as Oneshot, Snapshot, and Reverse Influence Sampling (RIS). Different from Arora et al., our experimental methodology is so designed that we examine the distribution of random solutions, characterize the relation between the sample number and the actual solution quality, and avoid implementation dependencies. Our main findings are as follows: 1. For a sufficiently large sample number, we obtain a unique solution regardless of algorithms. 2. The average solution quality of Oneshot, Snapshot, and RIS improves at the same rate up to scaling of sample number. 3. Oneshot requires more samples than Snapshot, and Snapshot requires fewer but larger samples than RIS. We discuss the time efficiency when conditioning Oneshot, Snapshot, and RIS to be of identical accuracy. Our conclusion is that Oneshot is suitable only if the size of available memory is limited, and RIS is more efficient than Snapshot for large networks; Snapshot is preferable for small, low-probability networks.

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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