Abstract
Distant supervision is an efficient approach for various tasks, such as relation extraction. Most of the recent literature on distantly supervised relation extraction generates labeled data by heuristically aligning knowledge bases with text corpora and then trains supervised relation classification models based on statistical learning. However, extracting long tail relations from the automatically labeled data is still a challenging problem even in big data. Inspired by explanation-based learning (EBL), this paper proposes an EBL-based approach to tackle this problem. The proposed approach can learn relation extraction rules effectively using unlabeled data. Experiments on the New York Times corpus demonstrate that our approach outperforms the baseline approach especially on long tail data.
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The selected domains are not the same as in [15] due to different versions of Freebase.
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Acknowledgement
This work is partially funded by the National Science Foundation of China under Grant 61170165, 61602260, 61502095.
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Gui, Y., Liu, Q., Zhu, M., Gao, Z. (2016). Exploring Long Tail Data in Distantly Supervised Relation Extraction. In: Lin, CY., Xue, N., Zhao, D., Huang, X., Feng, Y. (eds) Natural Language Understanding and Intelligent Applications. ICCPOL NLPCC 2016 2016. Lecture Notes in Computer Science(), vol 10102. Springer, Cham. https://doi.org/10.1007/978-3-319-50496-4_44
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