This paper presents a characterisation of and definitions for the phenomenon of masking in the context of justifications for entailments in ontologies. In essence masking is present within a justification, over a set of justifications, or over a complete ontology when the number of justifications for an entailment does not reflect the number of reasons for that entailment. Four types of masking are defined in this paper: Internal Masking, Cross Masking, External Masking and Shared Core Masking. The results of an empirical study are presented which shows that the phenomenon of masking is prevalent throughout ontologies with non-trivial entailments in the NCBO BioPortal corpus. Out of 72 ontologies, 53 exhibited some form of masking, with 9 ontologies exhibiting internal masking, 23 ontologies exhibiting external masking, and 53 ontologies exhibiting shared core masking. Copyright © 2012, Association for the Advancement of Artificial Intelligence (www.aaai.org). All rights reserved.
|Title of host publication||13th International Conference on the Principles of Knowledge Representation and Reasoning, KR 2012|Int. Conf. Princ. Knowl. Represent. Reasoning, KR|
|Number of pages||4|
|Publication status||Published - 2012|
|Event||13th International Conference on the Principles of Knowledge Representation and Reasoning, KR 2012 - Rome|
Duration: 1 Jul 2012 → …
|Conference||13th International Conference on the Principles of Knowledge Representation and Reasoning, KR 2012|
|Period||1/07/12 → …|