Poster – Paper 508

Correcting Range Violation Errors in DBpedia Piyawat Lertvittayakumjorn, Natthawut Kertkeidkachorn and Ryutaro Ichise Poster October 23, 2017, Poster and Demo Reception, 18:30-21:20 Festsaal 1 Download paper (preprint)

Abstract

A range violation error is a problem when an object of a knowledge graph triple does not have a type required by the range of the triple's predicate. This paper aims to correct these erroneous triples in DBpedia by finding correct objects with the required type to replace the incorrect objects. Our approach is based on graph analysis and keyword matching. It also exploits information from the incorrect objects because, despite their incorrectness, they contain useful clues to find the correct objects. Experimental results show that our proposed approach outperforms various baseline methods, including entity search (e.g., DBpedia Lookup) and knowledge graph completion (TransE and AMIE+).