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The topics they are a-changing - characterising topics with time-stamped semantic graphs

Cano, A. Elisabeth; He, Yulan and Alani, Harith (2014). The topics they are a-changing - characterising topics with time-stamped semantic graphs. In: Proceedings of the ISWC 2014 Posters & Demonstrations Track, CEUR, pp. 409–412.

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Abstract

DBpedia has become one of the major sources of structured knowledge extracted from Wikipedia. Such structures gradually re-shape the representation of Topics as new events relevant to such topics emerge. Such changes make evident the continuous evolution of topic representations and introduce new challenges to supervised topic classification tasks, since labelled data can rapidly become outdated. Here we analyse topic changes in DBpedia and propose the use of semantic features as a more stable representation of a topic. Our experiments show promising results in understanding how the relevance of features to a topic changes over time.

Item Type: Conference or Workshop Item
Copyright Holders: 2014 for the individual papers by the papers' authors
ISSN: 1613-0073
Extra Information: ISWC-P&D 2014
ISWC 2014 Posters & Demonstrations Track
a track within the 13th International Semantic Web Conference (ISWC 2014)
Edited by Matthew Horridge, Marco Rospocher, Jacco van Ossenbruggen
Keywords: social media; topic detection; DBpedia; concept drift; feature relevance decay
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Knowledge Media Institute (KMi)
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Centre for Research in Computing (CRC)
Related URLs:
Item ID: 41404
Depositing User: Amparo Cano Basave
Date Deposited: 25 Nov 2014 09:41
Last Modified: 02 May 2018 14:04
URI: http://oro.open.ac.uk/id/eprint/41404
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