CASCOM

, by Schumacher, Michael; Helin, Heikki; Schuldt, Heiko

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ISBN: 9783764385743 | 376438574X
Cover: Paperback
Copyright: 10/14/2008

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You're in emergency health care. How do you get seamless access to semantic Web services anytime, anywhere, by using any mobile computing device?This book provides all the answers. It presents the design, implementation and validation of a value-added supportive infrastructure for Semantic Web based business application services. And it applies these protocols specifically to emergency health care. The infrastructure concerned has been realized by the CASCOM European research project.

Preface	p. xxv
Acknowledgements	p. xxvii
Introduction	p. 1
Introduction	p. 1
Background	p. 2
Motivation: CASCOM in Emergency Assistance	p. 3
Overview of the Approach	p. 5
Overall View of the Book	p. 6
State of the Art	p. 9
Intelligent Agent-based Peer-to-Peer Systems (IP2P)	p. 11
Introduction	p. 11
IP2P Enabling Technologies	p. 11
Wireless Networks	p. 11
End-user Devices	p. 13
Seamless Mobility	p. 15
Ontologies in the Wireless World	p. 16
Overlay Networks	p. 22
Centralized P2P Architecture	p. 23
Pure P2P Architecture	p. 24
Hybrid P2P Architecture	p. 25
Summary	p. 25
Semantic Web Service Description	p. 31
Introduction	p. 31
Issues of Semantic Service Description	p. 31
Functional and Non-Functional Service Semantics	p. 32
Structured Representation of Service Semantics	p. 32
Monolithic Representation of Service Semantics	p. 32
Data Semantics	p. 33
Reasoning about Semantic Service Descriptions	p. 33
SAWSDL	p. 33
Annotating WSDL Components	p. 34
Limitations	p. 34
OWL-S	p. 36
Background: OWL	p. 36
Service Profile	p. 39
Service Process Model	p. 40
Service Grounding	p. 42
Software Support	p. 42
Limitations	p. 44
WSML	p. 44
WSMO Framework	p. 44
WSML Variants	p. 45
Services in WSML	p. 47
Software Support	p. 50
Limitations	p. 50
Monolithic DL-Based Service Descriptions	p. 51
Critique	p. 52
Summary	p. 54
Semantic Web Service Coordination	p. 59
Introduction	p. 59
Semantic Service Discovery	p. 59
Classification of Semantic Web Service Matchmakers	p. 61
Logic-Based Semantic Service Profile Matching	p. 64
Non-logic-based Semantic Profile Matching	p. 69
Hybrid Semantic Profile Matching	p. 69
Logic-based Semantic Process Matching	p. 71
Non-logic-based and Hybrid Semantic Process Model Matching	p. 72
Semantic Service Discovery Architectures	p. 72
Semantic Service Composition Planning	p. 79
Web Service Composition	p. 79
AI-Planning-Based Web Service Composition	p. 80
Classification of Semantic Service Composition Planners	p. 80
Functional-Level Composition Planners	p. 83
Process-Level Semantic Service Composition Planners	p. 83
Static Semantic Service Composition Planners	p. 84
Dynamic Composition Planners	p. 87
FLC Planning of Monolithic DL-Based Services	p. 89
Interrelations	p. 90
Composition Planning and Execution	p. 92
Negotiation	p. 92
Open Problems	p. 93
Summary	p. 95
Context-Awareness	p. 105
Introduction	p. 105
Context Definitions	p. 107
General Design Principles and Context Modeling Approaches	p. 109
Context Dependency Architectures	p. 112
Smart-Its Architecture	p. 114
Merino Architecture	p. 114
Architecture proposed by Cortese et al	p. 115
WASP Architecture	p. 115
CoBrA Architecture	p. 116
Context Taylor	p. 116
Summary	p. 118
Technology in Healthcare	p. 125
Introduction	p. 125
Objectives	p. 126
Benefits of e Health	p. 127
Improving the Quality of Healthcare	p. 128
Improving the Access of Healthcare	p. 128
Reducing Costs	p. 128
Barriers and Challenges of e-Health	p. 129
Mobility m Health	p. 129
m-Health Applications	p. 130
Technology Issues in m-Health	p. 131
Overview of m-Health Projects	p. 132
CASCOM in the Healthcare Domain	p. 135
Concepts	p. 135
Summary	p. 136
The CASCOM Solution	p. 141
General Architecture	p. 143
Introduction	p. 143
Technical Approach	p. 144
Conceptual Architecture	p. 145
IP2P Network Infrastructure	p. 146
Agent Architecture	p. 147
The CASCOM Architecture in Detail	p. 148
Networking Layer	p. 149
Service Coordination Layer	p. 150
Context Subsystem	p. 152
Security & Privacy Subsystem	p. 152
Instantiations of the CASCOM Architecture	p. 153
Centralized P2P	p. 153
Super-Peer P2P	p. 153
Structured Pure P2P	p. 154
Unstructured Pure P2P	p. 155
Discussion	p. 156
Summary	p. 158
Agent Platform and Communication Architecture	p. 161
Introduction	p. 161
Background	p. 162
FIPA Agent Platform	p. 162
Agent Platforms for Mobile Devices	p. 163
CASCOM Agent Platform	p. 165
CASCOM Agent Communication	p. 167
Messaging Gateway	p. 174
Summary	p. 176
Distributed Directories of Web Services	p. 181
Introduction	p. 181
Service Entries	p. 182
Directories	p. 183
Directory Services	p. 183
Directory Operations	p. 184
Policies	p. 186
CASCOM Service Directory Architecture	p. 187
Network Topology	p. 188
Network Construction	p. 191
Used Directory Policies	p. 191
Examples of Network Interactions	p. 192
Usability	p. 194
Vulnerability	p. 196
Breakdowns	p. 196
Recovery	p. 198
Security	p. 199
Related Work	p. 200
Summary	p. 202
Service Discovery	p. 205
Introduction	p. 205
Overview	p. 205
The CASCOM Service Discovery Agent	p. 207
The CASCOM Service Matchmaker	p. 208
Configurations	p. 209
SMA Interface	p. 213
Hybrid Semantic Service Matchmaker OWLS-MX	p. 214
Hybrid Matching Filters	p. 215
OWLS-MX Matching Algorithm	p. 216
OWLS-MX Variants	p. 217
Implementation	p. 217
Service Precondition and Effect Matchmaker PCEM	p. 218
Motivation	p. 218
PCEM Architecture	p. 219
PCEM Engine Module	p. 220
PCEM Languages Processing Module	p. 221
Preconditions and Effects Matching	p. 223
Implementation	p. 226
Role-Based Matchmaker ROWLS	p. 226
Motivation	p. 226
Interaction Modelling	p. 227
Role-Based Service Advertisements	p. 228
Role-Based Service Requests	p. 228
Role-based Service Matching Algorithm	p. 229
Implementation	p. 230
Summary	p. 230
Service Composition	p. 235
Introduction	p. 235
CASCOM Service Composition Agent SCPA	p. 235
Pre-Filtering for Service Composition	p. 237
Generic Pre-Filtering Framework	p. 237
Instantiation of Pre-Filters	p. 241
Service Composition With OWLS-XPlan	p. 243
Architecture	p. 243
Converter OWLS2PDDL	p. 245
Static Composition	p. 252
Dynamic Composition	p. 254
Service Composition With MetaComp	p. 256
Architecture	p. 256
Service Selection Methods	p. 259
Implementation	p. 260
Summary	p. 260
Semantic Web Service Execution	p. 263
Introduction	p. 263
Composite Service Execution	p. 264
General OWL-S Execution Procedure	p. 265
Centralized Approach for Service Execution	p. 266
Service Execution and Context-Awareness	p. 267
Service Execution Agent	p. 268
Implementation	p. 273
Distributed Approach for Service Execution	p. 273
General Assumptions	p. 274
Execution Strategy	p. 274
Interaction Model	p. 280
Implementation	p. 281
Summary	p. 283
Late Binding of Service Provider Instance during Execution	p. 284
Tight Integration of Service Providers and Execution Agents	p. 285
Context-Awareness System	p. 289
Introduction	p. 289
System Requirements	p. 290
Context Representation	p. 294
Base Ontology	p. 295
Distribution Ontology	p. 297
Context Data Ontology	p. 297
Context System Architecture	p. 298
System Overview	p. 298
Detailed Component Description	p. 300
System Deployment	p. 304
Summary	p. 305
Security, Privacy and Trust	p. 309
Introduction	p. 309
Two-Party Interactions	p. 310
A Model of Mediated Interactions	p. 312
Abstractions	p. 313
Expectation of the Utility of Agents	p. 314
Decision Making Strategy	p. 316
Trust PDF and the Risk Factor	p. 316
The Role of the PDF of Trust	p. 318
Worst-Case Analysis	p. 320
Integration in the CASCOM Platform	p. 321
IP2P Network Layer	p. 322
Service Coordination Layer	p. 322
Summary	p. 325
Trials and Results	p. 329
Qualitative Analysis	p. 331
Introduction	p. 331
Usability Trials in Helsinki	p. 333
Test Set-Up	p. 334
Execution	p. 335
Results	p. 336
Field Trials in Innsbruck and Basel	p. 339
Test Set-Up	p. 340
Execution	p. 341
Results	p. 342
Summary	p. 346
Quantitative Analysis	p. 349
Introduction	p. 349
Service Matchmaker Agent	p. 349
Test Environment	p. 349
Test 1	p. 350
Test 2	p. 350
Test 3	p. 350
Test 4	p. 351
Service Discovery Agent	p. 353
Test Environment	p. 353
Test Results and Discussion	p. 353
Service Composition Planner Agent	p. 354
OWLS-XPlan	p. 354
MetaComp	p. 355
Service Execution Agent	p. 357
Test Environment	p. 357
Test Results and Discussion	p. 358
WSDir	p. 358
Test Environment	p. 358
Topology and Scenario	p. 359
Test Results and Discussion	p. 360
Summary	p. 360
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