GAGE: Geometry Preserving Attributed Graph Embeddings
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Node representation learning is the task of extracting concise and informative feature embeddings of certain entities that are connected in a network. Many real world network datasets include information about both node connectivity and certain node attributes, in the form of features or time-series data. Modern representation learning techniques utilize both connectivity and attribute information of the nodes to produce embeddings in an unsupervised manner. In this context, deriving embeddings that preserve the geometry of the network and the attribute vectors would be highly desirable, as they would reflect both the topological neighborhood structure and proximity in feature space. While this is fairly straightforward to maintain when only observing the connectivity or attributed information of the network, preserving the geometry of both types of information is challenging. A novel tensor factorization approach for node embedding in attributed networks that preserves the distances of both the connections and the attributes is proposed in this paper, along with an effective and lightweight algorithm to tackle the learning task. Judicious experiments with multiple state-of-art baselines suggest that the proposed algorithm offers significant performance improvements in node classification and link prediction tasks.
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