论文标题
基于图形模式的更新感知节点匹配
Updates-Aware Graph Pattern based Node Matching
论文作者
论文摘要
基于图模式的节点匹配(GPNM)是基于给定模式图GP中数据图GD中的节点的所有匹配。在许多应用中,例如小组查找和专家建议,GPNM变得越来越重要。在实际情况下,GP和GD均经常更新。但是,现有的GPNM方法要么需要从头开始执行新的GPNM过程,以根据更新的GP和GD提供节点匹配结果,或者逐步执行每个更新的GPNM过程,从而导致效率低。因此,需要采用一种新方法来有效地在更新的图表上提供节点匹配结果。在本文中,我们首先分析和检测更新之间的消除关系。然后,我们构建了一个消除层次树(EH-Tree)来索引这些消除关系。为了加快GPNM流程的速度,我们建议使用图形分区方法,然后提出一种新的更新感知的GPNM方法,称为UA-GPNM,考虑了GP或GD的单个图表中的单个图形消除关系,以及GP和GP中更新中的更新和GD中的更新之间的跨读物消除关系。 UA-GPNM首先提供了初始查询的GPNM结果,然后根据初始GPNM结果和两个查询之间发生的多个更新,然后将随后查询的GPNM结果提供。五个现实世界中的实验结果表明,我们提出的UA-GPNM比最先进的GPNM方法更有效。
Graph Pattern based Node Matching (GPNM) is to find all the matches of the nodes in a data graph GD based on a given pattern graph GP. GPNM has become increasingly important in many applications, e.g., group finding and expert recommendation. In real scenarios, both GP and GD are updated frequently. However, the existing GPNM methods either need to perform a new GPNM procedure from scratch to deliver the node matching results based on the updated GP and GD or incrementally perform the GPNM procedure for each of the updates, leading to low efficiency. Therefore, there is a pressing need for a new method to efficiently deliver the node matching results on the updated graphs. In this paper, we first analyze and detect the elimination relationships between the updates. Then, we construct an Elimination Hierarchy Tree (EH-Tree) to index these elimination relationships. In order to speed up the GPNM process, we propose a graph partition method and then propose a new updates-aware GPNM method, called UA-GPNM, considering the single-graph elimination relationships among the updates in a single graph of GP or GD, and also the cross-graph elimination relationships between the updates in GP and the updates in GD. UA-GPNM first delivers the GPNM result of an initial query, and then delivers the GPNM result of a subsequent query, based on the initial GPNM result and the multiple updates that occur between two queries. The experimental results on five real-world social graphs demonstrate that our proposed UA-GPNM is much more efficient than the state-of-the-art GPNM methods.