This document discusses the role of semantics in various phases of the semantic web process lifecycle including annotation, discovery, composition, and execution. It describes how semantics can help address challenges like scalability, dynamic nature of business interactions, and long duration processes. Specifically, it discusses how semantics can be applied to represent data, functional, quality of service, and execution aspects of web services and processes to enable capabilities like automated discovery, selection, verification, and exception handling. It provides examples of research efforts like METEOR-S that apply semantics throughout the semantic web process lifecycle.

1. Semantic Web Process Lifecycle: R ole of Semantics in Annotation, Discovery,Composition and Execution Invited talk: WWW 2003 Workshop on E-Services and the Semantic Web Budapest, Hungary, Tuesday, May 20, 2003 Amit Sheth LSDIS Lab, University of Georgia and Semagix , Inc. With Acknowledgements to METEOR-S Project team: Kaarthik Sivashanmugam, Kunal Verma,Abhijit Patil

2. Globalization of Processes Web Processes Workflows Distributed Workflows Global Enterprise Inter-Enterprise B2B E-Services Processes driving the Networked Economy

4. Process Portal Processes driving the Networked Economy

6. Process Vortex Processes driving the Networked Economy

8. Dynamically Trading Processes Processes driving the Networked Economy

12. Scalability B8 A1 A4 A1 A2 A4 B3 A1 A4 A6 A2 A5 Before (Enterprise,Inter-enterprise workflows) A C D N1 N2 F E Discovery/Matchmaking should be accurate and scalable to the number of services available in Web A C D N1 N2 F E A4 A1 A1 A4 A1 A4 A1 A2 A1 A1 A1 A1 B3 A1 B3 A1 A2 A1 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 A1 B3 A1 A1 B3 A1 A4 A1 A2 A1 B3 A1 A4 A2 A1 B3 A1 A4 A1 A2 B3 A1 A1 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 A1 A1 A4 A1 A1 A4 A1 A2 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 A1 A4 A4 A1 A4 A1 A1 A4 A1 A2 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 B3 A1 A4 A1 A2 A1 A4 A1 A4 A1 A1 A4 A1 A2 A1 A1 A4 A1 A2 A1 A1 A4 A1 B3 A1 A1 A1 B3 A1 A4 A1 A2 A1 B3 A1 A4 A1 A2 A1 A1 A2 A1 A4 A2 A4 A2 A2 A1 A1 B3 A1 A4 A1 A2 A1 Now Semantics of the services Semantics of the activity (Data, Functional, Execution, QoS)

17. SWS and SWP Semantic Web Services* Semantic Web Processes Intra/Inter EnterpriseWorkflows Semantic Web Processes ebXML B2B Processes * From Amicalola report, Sigmod Record , Dec 2002

18. (Backdrop) Industries, Technologies, Research and Vision meet at SWP Semantic Web Process ebXML Workflow, EAI Semantic Web Web Services

33. Semantic Web Process LifeCycle Data / Information Semantics Description / Annotation WSDL, WSEL DAML-S Meteor-S (WSDL Annotation) Discovery UDDI WSIL, DAML-S METEOR-S (P2P model of registries) Composition / Choreography BPEL, BPML, WSCI, WSCL, DAML-S, METEOR-S (SCET) Execution / Orchestration BPWS4J, Commercial BPEL Execution Engines, Intalio n3, HP eFlow

34. Semantic Web Process LifeCycle Data / Information Semantics Discovery WSDL, WSEL DAML-S Meteor-S (WSDL Annotation) UDDI WSIL, DAML-S METEOR-S (P2P model of registries) BPWS4J, Commercial BPEL Execution Engines, Intalio n3, HP eFlow Description / Annotation Composition / Choreography Execution / Orchestration BPEL, BPML, WSCI, WSCL, DAML-S, METEOR-S (SCET)

35. Semantic Web Process LifeCycle Functional / Operational Semantics Discovery WSDL, WSEL DAML-S Meteor-S (WSDL Annotation) UDDI WSIL, DAML-S METEOR-S (P2P model of registries) BPWS4J, Commercial BPEL Execution Engines, Intalio n3, HP eFlow Description / Annotation Composition / Choreography Execution / Orchestration BPEL, BPML, WSCI, WSCL, DAML-S, METEOR-S (SCET)

36. Semantic Web Process LifeCycle QoS Semantics Discovery WSDL, WSEL DAML-S Meteor-S (WSDL Annotation) UDDI WSIL, DAML-S METEOR-S (P2P model of registries) BPWS4J, Commercial BPEL Execution Engines, Intalio n3, HP eFlow Description / Annotation Composition / Choreography Execution / Orchestration BPEL, BPML, WSCI, WSCL, DAML-S, METEOR-S (SCET)

37. Semantic Web Process LifeCycle Execution Semantics Discovery WSDL, WSEL DAML-S Meteor-S (WSDL Annotation) UDDI WSIL, DAML-S METEOR-S (P2P model of registries) BPWS4J, Commercial BPEL Execution Engines, Intalio n3, HP eFlow Description / Annotation Composition / Choreography Execution / Orchestration BPEL, BPML, WSCI, WSCL, DAML-S, METEOR-S (SCET)

38. Semantic Web Process LifeCycle Discovery WSDL, WSEL DAML-S Meteor-S (WSDL Annotation) UDDI WSIL, DAML-S METEOR-S (P2P model of registries) BPWS4J, Commercial BPEL Execution Engines, Intalio n3, HP eFlow Semantics Required for Web Processes Description / Annotation Composition / Choreography Execution / Orchestration BPEL, BPML, WSCI, WSCL, DAML-S, METEOR-S (SCET) Execution Semantics QoS Semantics Functional / Operational Semantics Data / Information Semantics

42. MWSDI : Annotation

46. Example (today) TV Weather Channel Find Weather at a Particular Region Patil, Oundhakar, Sheth, SAWS Techincal Report Out of these results, some do not have formal WSDL implementation, some links are not working and it does not return all the results.

47. Semantic Discovery : Problems TV Weather Channel Find Weather at a Particular Region Patil, Oundhakar, Sheth, SAWS Techincal Report [Cardoso,Sheth] [DAML-S] Can Semantic Annotation of Web Services help? Service Template Input WMOCode Output Weather Array of Strings WMO code (string) WorldWeather Weather Zip Code (string) FetchWeather Weather WMO/ICAO code (string) GlobalWeather Weather WMO code (string) FastWeather Output Input Service

49. Semantic Annotation: Data Semantics < xsd:complexType name =&quot; Wind &quot;> < xsd:sequence > < xsd:element name =&quot; prevailing_speed &quot; type =&quot; xsd:double &quot; /> < xsd:element name =&quot; gust_speed &quot; type =&quot; xsd:double &quot; /> < xsd:element name =&quot; prevailing_direction &quot; type =&quot; xsd1:Direction &quot; /> </ xsd:sequence > </ xsd:complexType > < xsd:complexType name =“ Pressure &quot;> < xsd:sequence > < xsd:element name =“ altimeter &quot; type =&quot; xsd:double &quot; /> < xsd:element name =“ slp &quot; type =&quot; xsd:double &quot; /> < xsd:element name =“ delta &quot; type =&quot; xsd:double &quot; /> </ xsd:sequence > </ xsd:complexType > Patil, Oundhakar, Sheth, SAWS Techincal Report Ontology : weather-ont.daml WSDL : GlobalWeather.wsdl 0.756 0.69 0.9 0.5 0.8 0.23 1.0 1.0 WindEvent windSpeed WeatherEvent windDirection PressureEvent AltimeterSetting windGustSpeed SeaLevelPressure PressureChangeEvent Class Property

50. Semantic Annotation: Functional Semantics Patil, Oundhakar, Sheth, SAWS Techincal Report < portType name =&quot; GlobalWeather &quot;> < operation name =&quot; getWeatherReport &quot;> < input message =&quot; tns:getWeatherReport &quot; /> < output message =&quot; tns:getWeatherReportResponse &quot; /> </ operation > </ portType > < portType name =&quot; StationInfo &quot;> < operation name =&quot; searchByCountry &quot;> < input message =&quot; tns:searchByCountry &quot; /> < output message =&quot; tns:searchByCountryResponse &quot; /> </ operation > A Sample Functional Ontology WSDL Operations WeatherFunctions getWeather getStation getWind getPressure getTemperature getStationByZip getStationByCountry

53. METEOR-S Discovery

55. METEOR-S Semantic Discovery Approach Registries are categorized Select relevant registries (semantic filtering) Select service(s) of interest Registry is domain specific and supports semantic search Ontology Domain Registry

57. QoS in METEOR-S

60. QoS in METEOR-S QoS Model QoS Estimates for Tasks/Web services QoS Computation Enact Stochastic Process QoS Estimates for Transitions Design Log SWR algorithm Simulation Jorge Cardoso , PhD Thesis, 2002

62. Broad Scope of Semantic (Web) Technology Other dimensions: how agreements are reached, … Lots of Useful Semantic Technology (interoperability, Integration) Gen. Purpose, Broad Based Scope of Agreement Task/ App Domain Industry Common Sense Degree of Agreement Informal Semi-Formal Formal Agreement About Data/ Info. Function Execution Qos Current Semantic Web Focus Semantic Web Processes