论文标题
通过元转换网络嵌入的图形上的节点分类很少
Node Classification on Graphs with Few-Shot Novel Labels via Meta Transformed Network Embedding
论文作者
论文摘要
我们研究了具有很少的新颖标签的图表上的节点分类问题,该标签具有两个独特的特性:(1)图中有新的标签; (2)新型标签只有几个代表性节点来训练分类器。对此问题的研究具有启发性,并且对应于许多应用程序,例如针对在线社交网络中只有少数用户的新组成的小组的建议。为了解决这个问题,我们提出了一个新型的元转换网络嵌入框架(metatne),该框架由三个模块组成:(1)A \ emph {结构模块}根据图形结构为每个节点提供一个潜在表示。 (2)A \ emph {meta学习模块}以元学习方式捕获图形结构和节点标签之间的关系作为先验知识。此外,我们引入了一个\ emph {嵌入转换函数},该函数可以补救直接使用元学习的不足。固有地,可以使用元学习的先验知识来促进学习少的小说标签。 (3)\ emph {优化模块}采用一种简单而有效的调度策略来训练上述两个模块,并在图形结构学习和元学习之间保持平衡。在四个现实世界数据集上的实验表明,梅塔恩(Metatne)对最先进的方法带来了巨大改进。
We study the problem of node classification on graphs with few-shot novel labels, which has two distinctive properties: (1) There are novel labels to emerge in the graph; (2) The novel labels have only a few representative nodes for training a classifier. The study of this problem is instructive and corresponds to many applications such as recommendations for newly formed groups with only a few users in online social networks. To cope with this problem, we propose a novel Meta Transformed Network Embedding framework (MetaTNE), which consists of three modules: (1) A \emph{structural module} provides each node a latent representation according to the graph structure. (2) A \emph{meta-learning module} captures the relationships between the graph structure and the node labels as prior knowledge in a meta-learning manner. Additionally, we introduce an \emph{embedding transformation function} that remedies the deficiency of the straightforward use of meta-learning. Inherently, the meta-learned prior knowledge can be used to facilitate the learning of few-shot novel labels. (3) An \emph{optimization module} employs a simple yet effective scheduling strategy to train the above two modules with a balance between graph structure learning and meta-learning. Experiments on four real-world datasets show that MetaTNE brings a huge improvement over the state-of-the-art methods.