论文标题

高血压:在超图上概括归纳表示学习

HyperSAGE: Generalizing Inductive Representation Learning on Hypergraphs

论文作者

Arya, Devanshu, Gupta, Deepak K., Rudinac, Stevan, Worring, Marcel

论文摘要

图是机器学习中使用的结构化数据表示最普遍的形式。但是,它们仅建模节点之间的成对关系,而不是为编码许多现实世界数据集中发现的高阶关系而设计的。为了建模这种复杂的关系,超图已被证明是自然的表示。在超图中学习节点表示比图中的节点表示更为复杂,因为它涉及两个级别的信息传播:在每个Hypereedge内部和整个Hyperedges中。大多数当前方法首先将超图结构转换为图表,以用于现有的几何深度学习算法。这种转变导致信息丢失,以及对超图的表达能力的次优剥削。我们提出了Hypersage,这是一种新型的HyperGraph学习框架,该框架使用两级神经信息传递策略来准确有效地通过HyperGraphs传播信息。高压的灵活设计有助于汇总邻里信息的不同方式。与大多数相关工作不同,我们的方法受流行的图形方法的启发是感应的。因此,它也可以用于以前看不见的节点上,从而促进了诸如不断发展或部分观察到的超图等问题的部署。通过广泛的实验,我们表明,高血压优于代表性基准数据集上的最先进的超图学习方法。我们还证明,与替代方案相比,高度较高的超级表达能力使其在学习节点表示方面更加稳定。

Graphs are the most ubiquitous form of structured data representation used in machine learning. They model, however, only pairwise relations between nodes and are not designed for encoding the higher-order relations found in many real-world datasets. To model such complex relations, hypergraphs have proven to be a natural representation. Learning the node representations in a hypergraph is more complex than in a graph as it involves information propagation at two levels: within every hyperedge and across the hyperedges. Most current approaches first transform a hypergraph structure to a graph for use in existing geometric deep learning algorithms. This transformation leads to information loss, and sub-optimal exploitation of the hypergraph's expressive power. We present HyperSAGE, a novel hypergraph learning framework that uses a two-level neural message passing strategy to accurately and efficiently propagate information through hypergraphs. The flexible design of HyperSAGE facilitates different ways of aggregating neighborhood information. Unlike the majority of related work which is transductive, our approach, inspired by the popular GraphSAGE method, is inductive. Thus, it can also be used on previously unseen nodes, facilitating deployment in problems such as evolving or partially observed hypergraphs. Through extensive experimentation, we show that HyperSAGE outperforms state-of-the-art hypergraph learning methods on representative benchmark datasets. We also demonstrate that the higher expressive power of HyperSAGE makes it more stable in learning node representations as compared to the alternatives.

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