Paper Info
Title
Exelixis: evolving ontology-based data integration system
Abstract
The evolution of ontologies is an undisputed necessity in ontology-based data integration. Yet, few research efforts have focused on addressing the need to reflect ontology evolution onto the underlying data integration systems. We present Exelixis, a web platform that enables query answering over evolving ontologies without mapping redefinition. This is achieved by rewriting queries among ontology versions. First, changes between ontologies are automatically detected and described using a high level language of changes. Those changes are interpreted as sound global-as-view (GAV) mappings. Then query expansion is applied in order to consider constraints from the ontology and unfolding to apply the GAV mappings. Whenever equivalent rewritings cannot be produced we a) guide query redefinition and/or b) provide the best "over-approximations", i.e. the minimally-containing and minimally-generalized rewritings. For the demonstration we will use four versions of the CIDOC-CRM ontology and real user queries to show the functionality of the system. Then we will allow conference participants to directly interact with the system to test its capabilities.
Year
DOI
Venue
2011
10.1145/1989323.1989477
SIGMOD Conference
Keywords
Field
DocType
guide query redefinition,ontology evolution,mapping redefinition,ontology version,equivalent rewritings,cidoc-crm ontology,ontology-based data integration system,gav mapping,real user query,query answering,query expansion,ontologies,data integration,data integrity,high level language
Ontology (information science),Ontology,Ontology-based data integration,Data mining,Process ontology,Query expansion,Information retrieval,Computer science,Suggested Upper Merged Ontology,Upper ontology,Ontology components,Database
Conference
Citations 
PageRank 
References 
13
0.96
8
Authors
2
Name
Order
Citations
PageRank
Haridimos Kondylakis132536.63
Dimitris Plexousakis22586326.38