Keynote at NFPSLAM-SOC @ ECOWS 2010

1. Towards A
Web Of Services
Dr. Carlos Pedrinaci
Knowledge Media Institute - The Open University
NFPSLAM-SOC'10 - December 1st, Ayia Napa, Cyprus

2. Acknowledgements
• Stefan Dietze, Jacek Kopecky, Dong Liu,
Maria Maleshkova, Harry Yu (OU)
• Guillermo Alvaro (iSOCO)
• Irene Celino (CEFRIEL)
• SOA4All Project

3. Taken from the Introduction to Web Services by Oracle

4. Taken from iSchool.tv

5. Number of Web Services found by Seekda.com in the last 52 Months
On the web however the benefits
may not be that clear!

6. Why?

8. Taken from the Introduction to Web Services by Oracle

9. What are the semantics
of the service?
... and most importantly ...
Where are they captured
for being processed?

10. Excerpt of OWL-S Excerpt of WSMO
Semantic Web OWL-S, WSMO, etc have been proposed
Although highly expressive they are
Service Ontologies expensive computationally and from an
annotation perspective

11. Taken from the Introduction to Web Services by Oracle

12. Classification of QoS Attributes (Kritikos, K. and D. Plexousakis, 2007)

13. How new trends are
reshaping the Web
... and why should we care ...

15. Web APIs are the Widely used and reused
Publicly available
new Web services With a real business model behind them
Although harder automation!

18. “Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/”

19. Linked Services
Exploiting the complementarity of
Services and Linked Data

20. Pedrinaci, C., and Domingue, J. (2010) Toward the Next Pedrinaci, C., Domingue, J., and Reto Krummenacher (2010) Services
Wave of Services: Linked Services for the Web of Data, and the Web of Data: An Unexploited Symbiosis, Linked AI: AAAI
Journal of Universal Computer Science. To Appear. Spring Symposium "Linked Data Meets Artificial Intelligence"
20

21. Web of Documents Web of Data
http://iserve.kmi.open.ac.uk

22. Web of Documents Web of Data
http://iserve.kmi.open.ac.uk

23. Web of Documents Web of Data
http://iserve.kmi.open.ac.uk

24. Web of Documents Web of Data
http://iserve.kmi.open.ac.uk

25. “Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/”

26. “Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/”

29. An Open and Standards-
Based Registry
• Supports access via
• Web Application - iServe Browser
• Read&Write RESTful API
• Linked Data principles
• SPARQL endpoint
• Content negotiation (RDF, HTML)

30. A Service Warehouse
• One of the largest publicly accessible Semantic
Service registries
• One of the most advanced registries for Web
APIs discovery
• Support for hybrid discovery
• Integration of social features (tags, comments,
ratings)
• Annotation recommendation

31. Status
• Publicly Available iserve.kmi.open.ac.uk
• Support for WSMO-Lite, MicroWSMO,
SAWSDL, OWL-S
• Around 2000 services
• OWL-S and SAWSDL Test Cases
• Import from Seekda
• Real services

33. Related Tooling
SOA4All Studio

34. SWEET - MicroWSMO Editor
Related Tooling
SOA4All Studio

35. SWEET - MicroWSMO Editor
Related Tooling SOWER - WSMO-Lite Editor
Mashups Editor
SOA4All Studio

36. SWEET - MicroWSMO Editor
Related Tooling SOWER - WSMO-Lite Editor
Mashups Editor
SOA4All Studio SPICES - Invocation Interface

37. SWEET - MicroWSMO Editor
Related Tooling SOWER - WSMO-Lite Editor
Mashups Editor
SOA4All Studio SPICES - Invocation Interface

38. Towards a
Web of Services
Generating and exploiting
a Web of Data about services

39. “Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/”

45. Linked User Publication in the Web of Data of
comments, tags, ratings by users
Feedback Based on Revyu.com but extended with
provenance and Web API

46. Analysis Warehouse Publication in the Web of Data of statistics
about services
Based on SDMX and traditional NFPs
Linked with service descriptions on iServe

47. Taken from Steve Bratt - W3C

48. How can this be
exploited?
An Example on Service Recommendation

49. SOA4All Studio Combining distributed sources of data
about services to better support the life-
cycle of service-oriented applications

50. Put your piece in
the puzzle

51. Thanks for your
attention