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Taxonomical hierarchy of canonicalized relations from multiple Knowledge Bases

2019-09-13 14:20:30
Akshay Parekh, Ashish Anand, Amit Awekar
arXiv_CL
           
Abstract

This work addresses two important questions pertinent to Relation Extraction (RE). First, what are all possible relations that could exist between any two given entity types? Second, how do we define an unambiguous taxonomical (is-a) hierarchy among the identified relations? To address the first question, we use three resources Wikipedia Infobox, Wikidata, and DBpedia. This study focuses on relations between person, organization and location entity types. We exploit Wikidata and DBpedia in a data-driven manner, and Wikipedia Infobox templates manually to generate lists of relations. Further, to address the second question, we canonicalize, filter, and combine the identified relations from the three resources to construct a taxonomical hierarchy. This hierarchy contains 623 canonical relations with highest contribution from Wikipedia Infobox followed by DBpedia and Wikidata. The generated relation list subsumes an average of 85% of relations from RE datasets when entity types are restricted.

Abstract (translated)

URL

https://arxiv.org/abs/1909.06249

PDF

https://arxiv.org/pdf/1909.06249.pdf

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