Automatic background knowledge selection for matching biomedical ontologies.

Automatic background knowledge selection for matching biomedical ontologies.
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DOI:
10.1371/journal.pone.0111226
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Couto FM
Couto FM
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Faria D;Pesquita C;Santos E;Cruz IF;Couto FM

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Ontology matching is a growing field of research that is of critical importance for the semantic web initiative. The use of background knowledge for ontology matching is often a key factor for success, particularly in complex and lexically rich domains such as the life sciences. However, in most ontology matching systems, the background knowledge sources are either predefined by the system or have to be provided by the user. In this paper, we present a novel methodology for automatically selecting background knowledge sources for any given ontologies to match. This methodology measures the usefulness of each background knowledge source by assessing the fraction of classes mapped through it over those mapped directly, which we call the mapping gain. We implemented this methodology in the AgreementMakerLight ontology matching framework, and evaluate it using the benchmark biomedical ontology matching tasks from the Ontology Alignment Evaluation Initiative (OAEI) 2013. In each matching problem, our methodology consistently identified the sources of background knowledge that led to the highest improvements over the baseline alignment (i.e., without background knowledge). Furthermore, our proposed mapping gain parameter is strongly correlated with the F-measure of the produced alignments, thus making it a good estimator for ontology matching techniques based on background knowledge.
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