Authors:
Martin Ledvinka
and
Petr Křemen
Affiliation:
Czech Technical University in Prague, Czech Republic
Keyword(s):
Ontology, Persistence, Application Access, Complexity.
Related
Ontology
Subjects/Areas/Topics:
Biomedical Engineering
;
Cloud Computing
;
Data Engineering
;
Enterprise Information Systems
;
Health Information Systems
;
Information Systems Analysis and Specification
;
Knowledge Management
;
Ontologies and the Semantic Web
;
Semantic Web Technologies
;
Services Science
;
Society, e-Business and e-Government
;
Software Agents and Internet Computing
;
Software Engineering
;
Tools, Techniques and Methodologies for System Development
;
Web Information Systems and Technologies
Abstract:
Accessing OWL ontologies programmatically by complex IT systems brings many problems stemming from
ontology evolution, their open-world nature and expressiveness. This paper presents Java OWL Persistence
API (JOPA), a persistence layer that allows using the object-oriented paradigm for accessing semantic web
ontologies. Comparing to other approaches, it supports validation of the ontological assumptions on the object
level, advanced caching, transactional approach, unification and optimization of repository access through the
OntoDriver component, as well as accessing multiple repository contexts at the same time. Additionally, we
present a complexity analysis of OntoDriver operations that allows optimizing object-oriented access performance
for underlying storage mechanisms. Last but not least, we compare our object-oriented solution to low
level Sesame API in terms of efficiency.