1. Ontology Versioning Tool DIP D2.4 Jacek Kopecký jacek.kopecky@deri.org SDK meeting, Grenoble, April 2005

2. SDK meeting Grenoble 2005, jacek.kopecky@deri.org Ontology Versioning Tool Already said by Pieter De Leenheer Management of versions of ontologies Also applicable for instance data Versioning library over WSMO API First prototype delivered, demo to come GUI support in editing & browsing tool DIP D2.3 in early stage Not yet done

3. SDK meeting Grenoble 2005, jacek.kopecky@deri.org Versioning Tool Initial Requirements Version identification Creating new version Version metadata E.g. version creator, date of creation etc. UI requirements Version browsing Transformation editing (future) Notification agent (future)

4. SDK meeting Grenoble 2005, jacek.kopecky@deri.org Future Work Versioning support in a repository Listing available versions Accessing latest or concrete version Version validation Formal transformation specification Difference analysis Impact analysis Change propagation

5. SDK meeting Grenoble 2005, jacek.kopecky@deri.org Initial Versioning Library API Version ID = number in a string Appended to URI path after comma http://example.com/sampleOntology,3 Usually in the namespace (if ending with #) http://example.com/sampleOntology,3#concept Extensible version metadata Creator, date, comment, non-func properties Explicit commit or drop of changes The rest is WSMO API

6. SDK meeting Grenoble 2005, jacek.kopecky@deri.org WSMO4J Limits Hacked factory for parser No repository No calls getAllVersions(id), getLatestVersion(id) Parsed ontology redundancy Two instances of concept Person xsd:string within the ontology Either sent or to be sent to wsmo4j list

7. SDK meeting Grenoble 2005, jacek.kopecky@deri.org Demo Overview Watching the versions in a simple process: Parse an example ontology Change it Drop the changes Reintroduce the changes Commit them Do more changes