论文标题

LEREG:授权图形神经网络具有局部能量正则化

LEReg: Empower Graph Neural Networks with Local Energy Regularization

论文作者

Ma, Xiaojun, Chen, Hanyue, Song, Guojie

论文摘要

图形神经网络(GNN)分析图的研究一直受到图形表达能力的巨大能力,因此受到了越来越多的关注。 GNNS通过在每个卷积层上的边缘传递边缘,将邻接矩阵和节点特征映射到节点表示。但是,通过GNN的消息并不总是对图中的所有部分有益。具体而言,随着数据分布在图上有所不同,接收场(节点可以从收集信息中获取信息的最远节点)也有所不同。现有的GNN均匀处理图表的所有部分,这使得很难适应每个唯一部分最有用的信息。为了解决这个问题,我们提出了两个正规化术语,这些术语考虑在本地传递消息:(1)能源内注射和(2)能量间的注册。通过实验和理论讨论,我们首先表明不同部分平滑的速度巨大变化,每个部分的拓扑都会影响平滑方式。借助能源内注射,我们加强了每个部分中传递的信息,这有助于获取更多有用的信息。通过能源间调节,我们提高了GNN区分不同节点的能力。借助拟议的两个正则化术语,GNN能够自适应地过滤最有用的信息,更健壮并获得更高的表现力。此外,提出的LEREG可以轻松地应用于具有插件特征的其他GNN模型。对几个基准测试的广泛实验验证了具有Lereg Estorm的GNN或与最新方法相匹配的GNN。通过精细的实验,还可以从经验上可视化效率和效率。

Researches on analyzing graphs with Graph Neural Networks (GNNs) have been receiving more and more attention because of the great expressive power of graphs. GNNs map the adjacency matrix and node features to node representations by message passing through edges on each convolution layer. However, the message passed through GNNs is not always beneficial for all parts in a graph. Specifically, as the data distribution is different over the graph, the receptive field (the farthest nodes that a node can obtain information from) needed to gather information is also different. Existing GNNs treat all parts of the graph uniformly, which makes it difficult to adaptively pass the most informative message for each unique part. To solve this problem, we propose two regularization terms that consider message passing locally: (1) Intra-Energy Reg and (2) Inter-Energy Reg. Through experiments and theoretical discussion, we first show that the speed of smoothing of different parts varies enormously and the topology of each part affects the way of smoothing. With Intra-Energy Reg, we strengthen the message passing within each part, which is beneficial for getting more useful information. With Inter-Energy Reg, we improve the ability of GNNs to distinguish different nodes. With the proposed two regularization terms, GNNs are able to filter the most useful information adaptively, learn more robustly and gain higher expressiveness. Moreover, the proposed LEReg can be easily applied to other GNN models with plug-and-play characteristics. Extensive experiments on several benchmarks verify that GNNs with LEReg outperform or match the state-of-the-art methods. The effectiveness and efficiency are also empirically visualized with elaborate experiments.

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