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    <abstract>Knowledge graph (KG) embedding techniques use structured relationships between entities to learn low-dimensional representations of entities and relations. One prominent goal of these approaches is to improve the quality of knowledge graphs by removing errors and adding missing facts. Surprisingly, most embedding techniques have been evaluated on benchmark datasets consisting of dense and reliable subsets of human-curated KGs, which tend to be fairly complete and have few errors. In this paper, we consider the problem of applying embedding techniques to KGs extracted from text, which are often incomplete and contain errors. We compare the sparsity and unreliability of different KGs and perform empirical experiments demonstrating how embedding approaches degrade as sparsity and unreliability increase.</abstract>
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%0 Conference Proceedings
%T Sparsity and Noise: Where Knowledge Graph Embeddings Fall Short
%A Pujara, Jay
%A Augustine, Eriq
%A Getoor, Lise
%Y Palmer, Martha
%Y Hwa, Rebecca
%Y Riedel, Sebastian
%S Proceedings of the 2017 Conference on Empirical Methods in Natural Language Processing
%D 2017
%8 September
%I Association for Computational Linguistics
%C Copenhagen, Denmark
%F pujara-etal-2017-sparsity
%X Knowledge graph (KG) embedding techniques use structured relationships between entities to learn low-dimensional representations of entities and relations. One prominent goal of these approaches is to improve the quality of knowledge graphs by removing errors and adding missing facts. Surprisingly, most embedding techniques have been evaluated on benchmark datasets consisting of dense and reliable subsets of human-curated KGs, which tend to be fairly complete and have few errors. In this paper, we consider the problem of applying embedding techniques to KGs extracted from text, which are often incomplete and contain errors. We compare the sparsity and unreliability of different KGs and perform empirical experiments demonstrating how embedding approaches degrade as sparsity and unreliability increase.
%R 10.18653/v1/D17-1184
%U https://aclanthology.org/D17-1184
%U https://doi.org/10.18653/v1/D17-1184
%P 1751-1756

Markdown (Informal)

[Sparsity and Noise: Where Knowledge Graph Embeddings Fall Short](https://aclanthology.org/D17-1184) (Pujara et al., EMNLP 2017)

• Sparsity and Noise: Where Knowledge Graph Embeddings Fall Short (Pujara et al., EMNLP 2017)

ACL

• Jay Pujara, Eriq Augustine, and Lise Getoor. 2017. Sparsity and Noise: Where Knowledge Graph Embeddings Fall Short. In Proceedings of the 2017 Conference on Empirical Methods in Natural Language Processing, pages 1751–1756, Copenhagen, Denmark. Association for Computational Linguistics.