论文标题

在动态归因网络中更改检测

Change Detection in Dynamic Attributed Networks

论文作者

Hewapathirana, Isuru Udayangani

论文摘要

网络提供了通过将实体作为顶点抽象和将图形连接顶点的边缘的关系抽象来表示实体之间复杂关系的强大方法。除了存在关系外,网络还可能包含可以归因于实体及其关系的其他信息。将这些附加属性数据附加到相应的顶点和边缘会产生归因的图。此外,在大多数实际应用程序中,例如在线社交网络,金融网络和交易网络,实体之间的关系会随着时间的推移而发展。 动态归因网络中的变化检测是许多领域的重要问题,例如欺诈检测,网络入侵检测和医疗保健监测。这是一个具有挑战性的问题,因为它涉及归因图的时间顺序,每个图通常都非常大,并且可以包含许多附加到顶点和边缘的属性,从而导致复杂的高维数学对象。 在本调查中,我们概述了使用属性信息的一些现有变更检测方法。我们根据图中的结构级别对这些方法进行分类,这些方法被利用以检测变化。这些级别是顶点,边缘,子图,社区和整体图。我们将注意力集中在这些方法的优势和劣势上,包括性能和可伸缩性。最后,我们讨论了一些公开可用的动态网络数据集,并简要概述了模拟模型,以生成合成动态属性网络。

A network provides powerful means of representing complex relationships between entities by abstracting entities as vertices, and relationships as edges connecting vertices in a graph. Beyond the presence or absence of relationships, a network may contain additional information that can be attributed to the entities and their relationships. Attaching these additional attribute data to the corresponding vertices and edges yields an attributed graph. Moreover, in the majority of real-world applications, such as online social networks, financial networks and transactional networks, relationships between entities evolve over time. Change detection in dynamic attributed networks is an important problem in many areas, such as fraud detection, cyber intrusion detection and health care monitoring. It is a challenging problem because it involves a time sequence of attributed graphs, each of which is usually very large and can contain many attributes attached to the vertices and edges, resulting in a complex, high dimensional mathematical object. In this survey we provide an overview of some of the existing change detection methods that utilize attribute information. We categorize these methods based on the levels of structure in the graph that are exploited to detect changes. These levels are vertices, edges, subgraphs, communities and the overall graph. We focus our attention on the strengths and weaknesses of these methods, including performance and scalability. Finally we discuss some publicly available dynamic network datasets and give a brief overview of simulation models to generate synthetic dynamic attributed networks.

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