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Authors: Rui Rodrigues 1 ; Joaquim Filipe 1 and Ana L. N. Fred 2

Affiliations: 1 Instituto Politécnico de Setúbal, Portugal ; 2 Instituto Superior Técnico, Portugal

Keyword(s): Semantic Relatedness, Wikipedia Categories, Ontological Entities, Taxonomical Density.

Abstract: In a previous work, we proposed a semantic relatedness measure between scientific concepts, using Wikipedia categories network as an ontology, based on the length of the category path. After observing substantial differences in the arc density of the categories network, across the whole graph, it was concluded that these irregularities in the ontology density may lead to substantial errors in the computation of the semantic relatedness measure. Now we attempt to correct for this bias and improve this measure by adding the notion of ontology density and proposing a new semantic relatedness measure. The proposed measure computes a weighed length of the category path between two concepts in the ontology graph, assigning a different weight to each arc of the path, depending on the ontology density in its region. This procedure has been extended to measure semantic relatedness between entities, an entity being defined as a set of concepts.

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Paper citation in several formats:
Rodrigues, R.; Filipe, J. and L. N. Fred, A. (2014). Semantic Relatedness with Variable Ontology Density. In Proceedings of the International Conference on Knowledge Discovery and Information Retrieval (IC3K 2014) - SSTM; ISBN 978-989-758-048-2; ISSN 2184-3228, SciTePress, pages 554-559. DOI: 10.5220/0005189005540559

@conference{sstm14,
author={Rui Rodrigues. and Joaquim Filipe. and Ana {L. N. Fred}.},
title={Semantic Relatedness with Variable Ontology Density},
booktitle={Proceedings of the International Conference on Knowledge Discovery and Information Retrieval (IC3K 2014) - SSTM},
year={2014},
pages={554-559},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005189005540559},
isbn={978-989-758-048-2},
issn={2184-3228},
}

TY - CONF

JO - Proceedings of the International Conference on Knowledge Discovery and Information Retrieval (IC3K 2014) - SSTM
TI - Semantic Relatedness with Variable Ontology Density
SN - 978-989-758-048-2
IS - 2184-3228
AU - Rodrigues, R.
AU - Filipe, J.
AU - L. N. Fred, A.
PY - 2014
SP - 554
EP - 559
DO - 10.5220/0005189005540559
PB - SciTePress

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