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arXiv 1906.04555cs.SIphysics.soc-ph
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综合网络在社区发现中的参数整定

Using synthetic networks for parameter tuning in community detection

Liudmila Prokhorenkova

摘要:

社区发现是网络分析中最重要也是最具挑战性的问题之一。然而,现实世界的网络可能具有非常不同的结构属性和各种性质的社区。因此,很难(甚至不可能)开发一种适用于所有数据集的算法。标准的机器学习工具是考虑参数算法并基于手头的数据集选择其参数。然而,这种方法不适用于社区发现,因为通常没有标记数据可用于这种参数调整。在本文中,我们提出了一个简单而有效的过程,允许调整超参数的任何给定的社区发现算法,而不需要任何标记的数据。其核心思想是生成一个合成网络,其属性与给定的现实世界相似,但具有已知的社区。事实证明,在这种合成图上调整参数也可以提高给定现实世界网络的质量。为了说明所提出的算法的有效性,我们展示了几个著名的参数社区发现算法在各种合成和真实世界的数据集上获得的显着改进。

英文摘要:

Community detection is one of the most important and challenging problems in network analysis. However, real-world networks may have very different structural properties and communities of various nature. As a result, it is hard (or even impossible) to develop one algorithm suitable for all datasets. A standard machine learning tool is to consider a parametric algorithm and choose its parameters based on the dataset at hand. However, this approach is not applicable to community detection since usually no labeled data is available for such parameter tuning. In this paper, we propose a simple and effective procedure allowing to tune hyperparameters of any given community detection algorithm without requiring any labeled data. The core idea is to generate a synthetic network with properties similar to a given real-world one, but with known communities. It turns out that tuning parameters on such synthetic graph also improves the quality for a given real-world network. To illustrate the effectiveness of the proposed algorithm, we show significant improvements obtained for several well-known parametric community detection algorithms on a variety of synthetic and real-world datasets.

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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