Implementing Semantic Web Services (eBook)

Dieter Fensel is the Scientific Director of the Digital Enterprise Research Institute (DERI) at the National University of Ireland, Galway since 2003, and the Director of the Digital Enterprise Research Institute (DERI) at the Leopold Franzens University of Innsbruck, Austria, since 2006. His current research interests are around the usage of semantics in 21st century computer science. Dieter published numerous books and papers about ontologies, the Semantic Web, and Semantic Web Services for more than a decade.Michal Zaremba is a researcher with DERI, working as system architect and developer in Semantic Web service systems and also leading the Semantic Execution Environment cluster. He is a founding member of the WSMO and WSMX working groups and member of the Semantic Web services Interest Group (SWSI) and the Semantic Web services Architecture Committee (SWSA). Michal is a chair of the Semantic Execution Environment (SEE) Technical Committee (TC) and has been an observer to several other TCs, as well as a contributor to the open source implementation of the ebXML registry/repository. His current research interests include Semantic Web Services, eBusiness, Enterprise Application Integration, B2B Integration as well as Business Process Management. Mick Kerrigan is a PhD researcher in the Digital Enterprise Research Institute (DERI) located in Leopold-Franz University Innsbruck, Austria. Over the last year he has been primarily involved in the WSMX working group focusing on front-end tools for Semantic Web Services. The primary output of his work has been the Web Service Modeling Toolkit, a collection of tools for Semantic Web Services, focusing on tools for creating and managing WSMO descriptions. Mick is also a contributor to and the secretary of the OASIS Semantic Execution Environment technical committee (SEE TC).

Preface 6
Contents 9
List of Contributors 12
Part I Foundations 14
1 From Web to Semantic Web 15
1.1 TheWeb – A Familiar Starting Point 15
1.2 Architectural Principles of the World Wide Web 17
1.3 TheWorld Wide Web Consortium – W3C 19
1.4 Spawning the SemanticWeb 21
1.5 The SemanticWeb 26
1.6 The SemanticWeb – Future Prospects 36
1.7 Summary 37
2 Semantic Web Services 38
2.1 Behavioral Perspective of the World Wide Web 38
2.2 Web Services 45
2.3 SemanticWeb Services: The Future of Integration! 48
2.4 The Ideal World 51
2.5 Summary 52
3 WSMO and WSML 53
3.1 TheWeb Service Modeling Ontology 53
3.2 TheWeb Service Modeling Language 63
3.3 Summary 75
Part II SESA Environment 76
4 Introduction to Semantically Enabled Service-oriented Architectures 77
4.1 SESA Background 77
4.2 Service Orientation 78
4.3 Execution Environment for SemanticWeb Services 82
4.4 Governing Principles 84
4.5 SESA Vision – Global View 84
4.6 SESA Roadmap 90
4.7 SESA Research Areas and Goals 91
4.8 Summary 105
5 SESA Middleware 106
5.1 Services Viewpoint 107
5.2 Technology Viewpoint 119
5.3 Summary 124
6 SESA Execution Semantics 125
6.1 Motivation 126
6.2 Proposed Description Formalism 127
6.3 Mandatory Execution Semantics 128
6.4 Case Study Example of SESA Execution Semantics 132
6.5 Technical Perspective on Execution Semantics 137
6.6 Summary 140
Part III SESA Services 141
7 Reasoning 142
7.1 Reasoning Requirements 142
7.2 Logical Background 145
7.3 Reasoning Tasks 149
7.4 Reasoning Within SESA 160
7.5 A Generic Framework for Reasoning with WSML 161
7.6 Rule Interchange Format 167
7.7 Conclusion 169
8 Discovery 171
8.1 A Conceptual Model for Discovery 171
8.2 Web Services at Various Levels of Abstraction 172
8.3 Keyword-Based Discovery 173
8.4 Discovery Based on Simple Semantic Descriptions 178
8.5 Discovery Based on Rich Semantic Descriptions 186
8.6 Summary 195
9 Selection 196
9.1 Introduction 196
9.2 Nonfunctional Properties 197
9.3 Selecting Services 204
9.4 Related Work 210
9.5 Summary 211
10 Mediation 213
10.1 Preliminaries 213
10.2 Ontology-Based Data Mediation 216
10.3 Behavioral Mediation 225
10.4 Summary 233
11 Storage and Internal Communication 234
11.1 Introduction to Triple Space Computing 235
11.2 Triple Space Kernel 238
11.3 Role of Triple Space Computing in SESA 248
11.4 Evaluation 256
11.5 Summary 257
Part IV SESA Application and Compatible Systems 259
12 SESA Application 260
12.1 Case Scenario: B2B Integration 260
12.2 Case Scenario: Voice and Data Integration 269
12.3 Summary 283
13 Compatible and Related Systems 284
13.1 The Internet Reasoning Service 284
13.2 Other WSMO-Compatible Tools 292
13.3 Tools Based on OWL-S 293
13.4 METEOR-S 295
14 Conclusions and Outlook 301
14.1 Why SOA? 301
14.2 FutureWork 303
14.3 Commercialization 304
References 305
Index 317