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arXiv · 1809.00537

Crowdsourcing Semantic Label Propagation in Relation Classification

Anca Dumitrache·Lora Aroyo·Chris Welty
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Abstract

Distant supervision is a popular method for performing relation extraction from text that is known to produce noisy labels. Most progress in relation extraction and classification has been made with crowdsourced corrections to distant-supervised labels, and there is evidence that indicates still more would be better. In this paper, we explore the problem of propagating human annotation signals gathered for open-domain relation classification through the CrowdTruth methodology for crowdsourcing, that captures ambiguity in annotations by measuring inter-annotator disagreement. Our approach propagates annotations to sentences that are similar in a low dimensional embedding space, expanding the number of labels by two orders of magnitude. Our experiments show significant improvement in a sentence-level multi-class relation classifier.

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Anca Dumitrache, Lora Aroyo, Chris Welty. 2018-09-03. Crowdsourcing Semantic Label Propagation in Relation Classification. https://doi.org/10.18653/v1%2Fw18-5503

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