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Designing Semantic Web Process: The WSDL-S Approach. Presented by Ke Li LSDIS Lab, University of Georgia (Under the Direction of John A. Miller). Acknowledgment. Dr. John A. Miller Dr. Amit P. Sheth Dr. Eileen T. Kraemer Kunal, Meena Doug, Zixin Cary, Scott. Outline. Introduction
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Designing Semantic Web Process: The WSDL-S Approach Presented by Ke Li LSDIS Lab, University of Georgia (Under the Direction of John A. Miller)
Acknowledgment • Dr. John A. Miller • Dr. Amit P. Sheth • Dr. Eileen T. Kraemer • Kunal, Meena • Doug, Zixin • Cary, Scott
Outline • Introduction • Background • Contribution • The METEOR-S Semantic Discovery Tool – Lumina • Design Semantic Web Process Using WSDL-S • Sample Use Case • Evaluation • Related Work • Conclusion • Future Work
Outline • Introduction • Background • The METEOR-S Semantic Discovery Tool – Lumina • Design Semantic Web Process Using WSDL-S • Sample Use Case • Evaluation • Related Work • Conclusion • Future Work
Introduction • Web Service • Concept • Web Services are self-contained modular business applications that have open, internet-oriented and standards-based interface. • Web Service Standards • SOAP (Simple Object Access Protocol) • WSDL (Web Service Description Language) • UDDI (Universal Description, Discovery and Integration) • WS-BPEL (Web Service Business Process Execution Language)
Introduction • Web Process • Combine individual services to achieve a more complex goal • Advantage • enables modular design • Implements the control and data flow between services • For example, Service A, B and C. B is dependent on A’s output message. A and C can be invoked at the same time
Introduction • Semantic Web Service • Adding semantics to Web service standards • Bring “meaning” to the services • Removes ambiguity in the description of Web service elements. • Enables automation of tasks like discovery, invocation, composition
Introduction • WSDL-S Based Tool Suite for Designing Semantic Web Process • Radiant – Web Service Semantic Annotation and Semantic Publish • Lumina – Semantic Web Service Discovery • Saros – Web Services Composition
Outline • Introduction • Background • The METEOR-S Semantic Discovery Tool – Lumina • Design Semantic Web Process Using WSDL-S • Sample Use Case • Evaluation • Related Work • Conclusion • Future Work
Background • Problems with current Web Service publishing, discovery and composition • No unified WSDL to UDDI mapping structure • Syntactic search mechanism for service discovery
Background • Mapping Structure from WSDL to UDDI
Background • Modified Mapping Structure from WSDL-S to UDDI
Background • Four Semantic Web Service Standard Proposals (Brief Overview) • OWL-S • WSMO (Web Service Modeling Ontology) • SWSO (Semantic Web Service Ontology) • WSDL-S
Background (OWL-S and WSMO) • OWL-S • WSMO
Background (WSDL-S) • WSDL-S • Built on existing Web Service standard - WSDL • Enables semantic annotation of Web Services by using extensibility elements and attributes • Annotation on message types: modelReference, and schemaMapping • Annotation on operation: modelReference, category, precondition and effect • Uses external domain models to provide the semantics
Outline • Introduction • Background • Contribution • The METEOR-S Semantic Discovery Tool – Lumina • Design Semantic Web Process Using WSDL-S • Sample Use Case • Evaluation • Related Work • Conclusion • Future Work
Contribution • Design and develop the WSDL-S based semantic discovery tool called Lumina. • Develop the API for publishing WSDL / WSDL-S files to our enhanced UDDI registry. • Design the Semantic Template generator which can be used within Saros.
Outline • Introduction • Background • The METEOR-S Semantic Discovery Tool – Lumina • Design Semantic Web Process Using WSDL-S • Sample Use Case • Evaluation • Related Work • Conclusion • Future Work
The METEOR-S Semantic Discovery Tool - Lumina • Motivation • Support semantic discovery (WSDL-S approach) • Enable semi-automatic design of Web Processes (using Saros) • Supply a unified discovery style to discover from different Universal Business Registries
The METEOR-S Semantic Discovery Tool - Lumina • Setting Environment • Web Server: Tomcat 5.0.30 • UDDI Registry Implementation: JUDDI 0.9 • Registry Database: MySQL-4.1.12-win32 • JDK 1.5 • Model Dependency • METEOR-S Discovery API • WSDLS4J • UDDI4J
The METEOR-S Semantic Discovery Tool - Lumina • Discovery Modes – UDDI structure based discovery 1.General UDDI Discovery (Basic UDDI Discovery Panel) • Unified search style for all the UBRs • Provide discovery of “Business Entity”, “Business Service” and “Technical Model” • Business Entity: Business Name, Discovery URL, Categories, TModel Keys • Business Service: Service Name, Categories, Business Key, TModel Keys • TModel: TModel Name
The METEOR-S Semantic Discovery Tool – Lumina – UDDI Structure Based Discovery
The METEOR-S Semantic Discovery Tool – Lumina –UDDI Structure Based Discovery
The METEOR-S Semantic Discovery Tool - Lumina • Discovery Modes – WSDL-S based Semantic Discovery 2. WSDL-S Discovery (WSDL-S Discovery Panel & Semantic Template View) • Input to the discovery module • Ontology URL • Operation functional concepts, semantic inputs and semantic outputs Input modes • Typed in by the user • Dragged and dropped from the Ontology Navigator in Radiant • Output from the discovery module • Service information (service name, WSDL location) • Service provider information (link to the business entity) • Detailed discovered operation information (operation name, input / output variables, ontological concepts about these parameters, input / output types, portType)
The METEOR-S Semantic Discovery Tool – Lumina:Semantic Discovery Panel + Partner Service Viewer
The METEOR-S Semantic Discovery Tool – Lumina:Semantic Template View
The METEOR-S Semantic Discovery Tool - Lumina • Discovery Modes – WSDL based Syntactic discovery 3. WSDL Discovery (WSDL Discovery Panel) • Input to discovery module: • Exact operation name, input and output variables • Same as WSDL-S Discovery except the semantic information
The METEOR-S Semantic Discovery Tool – Lumina – METEOR-S Discovery Class Diagram
The METEOR-S Semantic Discovery Tool - Lumina • Architecture of Lumina • Adopts Eclipse Plugin Techniques: • Action: Lumina start button in tool bar • Editor: UDDI Editor (Basic UDDI Discovery, WSDL-S Discovery and WSDL Discovery) • View: (Semantic Template Viewer and Partner Service Viewer) • Perspective: Lumina Perspective
The METEOR-S Semantic Discovery Tool – Lumina Model Class diagram
The METEOR-S Semantic Discovery Tool – Lumina View Class diagram
Outline • Introduction • Background • The METEOR-S Semantic Discovery Tool – Lumina • Design Semantic Web Process Using WSDL-S • Sample Use Case • Evaluation • Related Work • Conclusion • Future Work
Design Semantic Web Process Using WSDL-S • Semantic Annotation and Publish – Radiant • WSDL-S to UDDI Mapping Structure
Design Semantic Web Process Using WSDL-S: WSDL-S to UDDI Mapping Structure
Design Semantic Web Process Using WSDL-S – Annotating a Web service using Radiant
Design Semantic Web Process Using WSDL-S • Semantic Discovery – Lumina • WSDL-S Discovery Panel (UDDI Editor) and Partner Service Viewer • Store the candidate partner services to partner service viewer (convenient) • Semantic Template Viewer • Save the semantic template to files • Load a exist semantic file • Enable discovery of multiple operations • Dependence • Economic • Efficient
Design Semantic Web Process Using WSDL-S: WSDL-S Discovery Panel
Design Semantic Web Process Using WSDL-S: Semantic Template View
Design Semantic Web Process Using WSDL-S • Semantic Web Process Design - Saros • Dynamic partner selection using the Semantic Templates that describe virtual partners • Two phase design • Generate new semantic template(s) or load the exist semantic template(s) using Semantic Template Viewer (Lumina) • Discover the partner services using the semantic templates and bind the discovered services to the process
WSDL-S Semantic Template BPEL Process Process Designer Search Results Semantic Publication and Discovery UDDI Registry Design Semantic Web Process Using WSDL-S • Semantic Web Process Design - Saros
Design Semantic Web Process Using WSDL-S: Saros Design Panel
Outline • Introduction • Background • The METEOR-S Semantic Discovery Tool – Lumina • Design Semantic Web Process Using WSDL-S • Sample Use Case • Evaluation • Related Work • Conclusion • Future Work
Sample Use Case • Sample Scenario • Goal: investment strategy for buying stock • Input: stock ticker, possible investment amount • Output: value analysis for proceeding with the investment
Sample Use Case • Analyze the business requirement and build a UML diagram
Sample Use Case • Fill in the process skeleton
Sample Use Case 3. Fill in the nested constructs / structured activities
Sample Use Case 4. Identify partners • Binding the real partners: using concrete service information • Binding the virtual partners: filling a semantic template • Discovery based on: • Operation • Input and output