align++ - A Heuristic-based Method for Approximating the Mismatch-at-Risk in Schema-based Ontology Alignment

Alexandra Mazak, Bernhard Schandl, Monika Lanzenberger

2010

Abstract

Frequently, ontologies based on the same domain are similar but also have many differences, which are known as heterogeneity. The alignment of entities which are not meant to be used in the same context, or which follow different modeling conventions, may cause mismatch in ontology alignment. End-users would benefit from knowing the risk level of mismatch between ontologies prior to starting a time- and cost-intensive procedure. With our heuristic-based method align++ we propose to consider the general application context of a modeled domain (the modeling context) in order to enhance the user support in schema-based alignment. In the method’s first part, ontology concepts are enriched with weighting meta-information, resulting from two indicators: importance weighting indicator and importance outdegree indicator. These indicators contain model- and graph-based information and can be observed and measured at the schema level of an ontology. The output of the first part are ranking lists of importance indicators for each ontology concept in the role of a domain class. In the second part, the candidate sample for our mismatch-risk model bases on external user input by manually identifying concepts between the lists of each source ontology. The heterogeneity risk among the concepts’ importance indicator values is measured as standard deviation over the candidate sample. Afterwards these measured values are aggregated, and a heterogeneity coefficient is calculated. On the basis of this risk factor the mismatch-at-risk (MaR) between ontologies can be approximated as a threshold for schema-based ontology alignment.

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Paper Citation


in Harvard Style

Mazak A., Schandl B. and Lanzenberger M. (2010). align++ - A Heuristic-based Method for Approximating the Mismatch-at-Risk in Schema-based Ontology Alignment . In Proceedings of the International Conference on Knowledge Engineering and Ontology Development - Volume 1: KEOD, (IC3K 2010) ISBN 978-989-8425-29-4, pages 17-26. DOI: 10.5220/0003063600170026


in Bibtex Style

@conference{keod10,
author={Alexandra Mazak and Bernhard Schandl and Monika Lanzenberger},
title={align++ - A Heuristic-based Method for Approximating the Mismatch-at-Risk in Schema-based Ontology Alignment},
booktitle={Proceedings of the International Conference on Knowledge Engineering and Ontology Development - Volume 1: KEOD, (IC3K 2010)},
year={2010},
pages={17-26},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003063600170026},
isbn={978-989-8425-29-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Knowledge Engineering and Ontology Development - Volume 1: KEOD, (IC3K 2010)
TI - align++ - A Heuristic-based Method for Approximating the Mismatch-at-Risk in Schema-based Ontology Alignment
SN - 978-989-8425-29-4
AU - Mazak A.
AU - Schandl B.
AU - Lanzenberger M.
PY - 2010
SP - 17
EP - 26
DO - 10.5220/0003063600170026