Investigations into PLCS DEX components developed using Semantic Web technology.

1. Semantic DEX Components Analysis Evolving Architecting Acquiring Modeling Maintaining Validating Deploying Integrating David Price Managing Director, TopQuadrant Limited dprice@topquadrant.com

2. Semantic DEX Components Investigating use of Semantic Web languages to specify DEX components Summary Template = Class Parameter = Property Path = SPARQL Construct as SPARQL Rules SPARQL Rules submitted to W3C Feb 2011 Template use = Instantiate the Class Using AP239 proxy ontology Testing = TopSPIN SPARQL Rules engine

3. A DEX Template = Class

4. A Template Parameter = Property

5. Template has Parameter = Class Restriction on Property Here's the logic of the Class with Property links

6. assigning_reference_data Create External_class_library With id a string Create External_class With external_source the External_class_library with class_name a string Create Classification_assignment With assigned_class the External_class With items that are classification_item

7. Path = SPARQL Construct

8. 1) Read Template Parameter values

9. 2) Set instance identifiers (URI)

10. 3) External_class_library

11. 4) External_class

12. 5) Classification_assignment

13. assigning_identification_with_no_organization which uses assigning_reference_data template passing id_class_name and id_ecl_id

14. assigning_identification_with_no_organization Create Identification_assignment With identifier a string With items that are identification_item Create Classification_assignment by using assigning_reference_data passing parameters: id_class_name a string ecl_id a string items the instance of Identification_assignment

15. Use Template = Instantiate Class

16. 1) Read Template Parameter values

17. 2) Set instance identifiers (URI)

18. 3) Create Identification_assignment

19. 4) Use assigning_reference_data

21. Path = SPARQL Rules CONSTRUCT result: we can execute them

22. Infer new AP239 instances from Template instances

24. Instance of identification_item

25. Execute SPARQL engine = infer new data

26. Nested form view of inferred data

27. Graph view of inferred data

28. Conclusion It works! OWL and SPARQL Rules can represent DEX Templates and Paths Not exactly the same capability – a bit less in some ways and more in others Templates/Paths can be tested quite easily, which is not true now or with SysML-based approach Based in standards SPARQL is the W3C RDF query language standard SPARQL Rules has been submitted to W3C