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arXiv · 1808.07018

Hypernetwork Knowledge Graph Embeddings

Ivana Balažević·Carl Allen·Timothy M. Hospedales
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Abstract

Knowledge graphs are graphical representations of large databases of facts, which typically suffer from incompleteness. Inferring missing relations (links) between entities (nodes) is the task of link prediction. A recent state-of-the-art approach to link prediction, ConvE, implements a convolutional neural network to extract features from concatenated subject and relation vectors. Whilst results are impressive, the method is unintuitive and poorly understood. We propose a hypernetwork architecture that generates simplified relation-specific convolutional filters that (i) outperforms ConvE and all previous approaches across standard datasets; and (ii) can be framed as tensor factorization and thus set within a well established family of factorization models for link prediction. We thus demonstrate that convolution simply offers a convenient computational means of introducing sparsity and parameter tying to find an effective trade-off between non-linear expressiveness and the number of parameters to learn.

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Ivana Balažević, Carl Allen, Timothy M. Hospedales. 2018-08-21. Hypernetwork Knowledge Graph Embeddings. https://doi.org/10.1007/978-3-030-30493-5_52

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