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Is a Single Embedding Enough? Learning Node Representations that Capture Multiple Social Contexts

, und . The World Wide Web Conference on - WWW '19, Seite 394--404. San Francisco, CA, USA, ACM Press, (2019)
DOI: 10.1145/3308558.3313660

Zusammenfassung

Recent interest in graph embedding methods has focused on learning a single representation for each node in the graph. But can nodes really be best described by a single vector representation? In this work, we propose a method for learning multiple representations of the nodes in a graph (e.g., the users of a social network). Based on a principled decomposition of the ego-network, each representation encodes the role of the node in a different local community in which the nodes participate. These representations allow for improved reconstruction of the nuanced relationships that occur in the graph – a phenomenon that we illustrate through state-of-the-art results on link prediction tasks on a variety of graphs, reducing the error by up to 90\%. In addition, we show that these embeddings allow for effective visual analysis of the learned community structure.

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