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Semantic Web for the Working Ontologist - Effective Modeling in RDFS and OWL
Dean Allemang, James Hendler
Verlag Elsevier Trade Monographs, 2011
ISBN 9780123859662 , 384 Seiten
2. Auflage
Format PDF, ePUB, OL
Kopierschutz DRM
Geräte
Front Cover
1
Semantic Web for the Working Ontologist
2
Semantic Web for the Working Ontologist
4
Copyright
5
Contents
6
Preface to the second edition
8
Preface to the first edition
9
Acknowledgments
12
About the authors
14
Chapter 1 -What is the Semantic Web?
16
What Is a Web?
17
Smart Web, Dumb Web
17
Semantic Data
19
Summary
26
Chapter 2 -Semantic modeling
28
Modeling for Human Communication
29
Explanation and Prediction
32
Mediating variability
33
Expressivity in modeling
37
Summary
39
Chapter 3 -RDF—The basis of the Semantic Web
42
Distributing Data across the Web
43
Merging Data from Multiple Sources
47
Namespaces, URIs, and Identity
48
Identifiers in the RDF Namespace
53
Challenge: RDF and Tabular Data
55
Higher-order Relationships
57
Alternatives for Serialization
59
RDF/XML
61
Blank Nodes
62
Summary
64
Chapter 4 -Semantic Web application architecture
66
RDF Parser/Serializer
67
RDF Store
69
Application Code
71
Data Federation
73
Summary
74
Chapter 5 -Querying the Semantic Web—SPARQL
76
Tell-and-Ask Systems
77
RDF as a Tell-and-Ask System
81
SPARQL—Query Language for RDF
81
Construct Queries in SPARQL
101
Using Results of CONSTRUCT Queries
102
SPARQL rules—Using SPARQL as a Rule Language
103
Advanced Features of SPARQL
113
Aggregates and Grouping (SPARQL 1.1)
116
Subqueries (SPARQL 1.1)
119
Union
120
Assignments (SPARQL 1.1)
121
Federating SPARQL Queries
124
Summary
127
Chapter 6 -RDF and inferencing
128
Inference in the Semantic Web
129
Where Are the Smarts?
132
When Does Inferencing Happen?
136
Summary
137
Chapter 7 -RDF schema
140
Schema Languages and Their Functions
141
The RDF Schema Language
142
RDFS Modeling Combinations and Patterns
148
Set Union
150
Challenges
153
Modeling with Domains and Ranges
161
Nonmodeling Properties in RDFS
165
Summary
166
Chapter 8 -RDFS-Plus
168
Inverse
169
Symmetric Properties
175
Transitivity
177
Equivalence
185
Computing Sameness—Functional Properties
193
A Few More Constructs
197
Summary
199
Chapter 9 -Using RDFS-Plus in the wild
202
Open Government Data
203
Data.gov Summary
210
FOAF
211
Facebook’s Open Graph Protocol
218
Summary
220
Chapter 10 -SKOS—managing vocabularies with RDFS-Plus
222
Simple Knowledge Organization System (SKOS)
222
Semantic Relations in SKOS
225
Concept Schemes
229
SKOS Integrity
231
SKOS in Action
232
Summary
233
Chapter 11 -Basic OWL
236
Restrictions
236
Challenge Problems
252
Solution
256
Solution
260
Alternative Descriptions of Restrictions
261
Summary
263
Chapter 12 -Counting and sets in OWL
264
Unions and Intersections
265
Differentiating Multiple Individuals
270
Cardinality
272
Set Complement
277
Disjoint Sets
279
Prerequisites Revisited
281
Contradictions
285
Unsatisfiable Classes
286
Inferring Class Relationships
288
Reasoning with Individuals and with Classes
291
Summary
293
Chapter 13 -Ontologies on the Web—putting it all together
294
The Good Relations Ontology
295
Inferencing in the Good Relations Ontology
298
Composing Files
300
Summary
302
Quantities, Units, and Dimensions
302
Converting Units with QUDT
304
Dimension Checking in QUDT
309
Summary
312
Biological Ontologies
313
CHEBI as Unambiguous Reference
313
CHEBI for Complex Search
314
Summary
319
Chapter 14 -Good and bad modeling practices
322
Getting Started
322
Modeling for Reuse
325
Common Modeling Errors
327
Summary
338
Chapter 15 -Expert modeling in OWL
340
Owl Subsets and Modeling Philosophy
341
OWL 2 Modeling Capabilities
343
Summary
347
Chapter 16 -Conclusions
350
Appendix -Frequently asked questions
354
Further reading
358
Selected Books
358
Selected Articles
358
World Wide Web Consortium Publications on RDF, RDFS, and OWL
360
Index
362
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