Keywords:
Description logics-Handbooks, manuals, etc.
;
Electronic books.
Description / Table of Contents:
Now available in paperback, The Description Logic Handbook is the definitive reference and study guide for researchers in the field of knowledge representation. As well as general revision throughout the book, this new edition presents a new chapter on ontology languages for the semantic web.
Type of Medium:
Online Resource
Pages:
1 online resource (623 pages)
Edition:
2nd ed.
ISBN:
9780511714375
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=501249
DDC:
006.332
Language:
English
Note:
Cover -- Half-title -- Title -- Copyright -- Contents -- Contributors -- Preface to the second edition -- Preface -- 1 An Introduction to Description Logics -- Abstract -- 1.1 Introduction -- 1.2 From networks to Description Logics -- 1.2.1 Network-based representation structures -- 1.2.2 A logical account of network-based representation structures -- 1.2.3 Reasoning -- 1.3 Knowledge representation in Description Logics -- 1.3.1 The TBox -- 1.3.2 The A Box -- 1.4 From theory to practice: Description Logic systems -- 1.4.1 The design of knowledge representation systems based on Description Logics -- 1.4.2 Knowledge representation systems based on Description Logics -- 1.4.2.1 Pre-Description Logic systems -- 1.4.2.2 Description Logic systems -- 1.4.2.3 Current generation Description Logic systems -- 1.5 Applications developed with Description Logic systems -- 1.5.1 Modeling with Description Logics -- 1.5.2 Application domains -- 1.5.2.1 Software engineering -- 1.5.2.2 Configuration -- 1.5.2.3 Medicine -- 1.5.2.4 Digital libraries and Web-based information systems -- 1.5.2.5 Other application domains -- 1.5.3 Application areas -- 1.5.3.1 Natural language -- 1.5.3.2 Database management -- 1.6 Extensions of Description Logics -- 1.6.1 Language extensions -- 1.6.1.1 Non-monotonic reasoning -- 1.6.1.2 Modal representation of knowledge and belief -- 1.6.1.3 Epistemic reasoning -- 1.6.1.4 Temporal reasoning -- 1.6.1.5 Representation of uncertain and vague knowledge -- 1.6.1.6 Concrete domains -- 1.6.2 Additional reasoning services -- 1.6.2.1 Least common subsumer and most specific concept -- 1.6.2.2 Unification and matching -- 1.6.2.3 Concept rewriting -- 1.7 Relationship to other fields of Computer Science -- 1.7.1 Description Logics and other class-based formalisms -- 1.7.2 Relationships to other logics -- 1.8 Conclusion -- Acknowledgements.
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Part I Theory -- 2 Basic Description Logics -- Abstract -- 2.1 Introduction -- 2.2 Definition of the basic formalism -- 2.2.1 Description languages -- 2.2.1.1 The basic description language AL -- 2.2.1.2 The family of AL-languages -- 2.2.1.3 Description languages as fragments of predicate logic -- 2.2.2 Terminologies -- 2.2.2.1 Terminological axioms -- 2.2.2.2 Definitions -- 2.2.2.3 Fixpoint semantics for terminological cycles -- 2.2.2.4 Existence of fixpoint models -- 2.2.2.5 Terminologies with inclusion axioms -- 2.2.3 World descriptions -- 2.2.3.1 Assertions about individuals -- 2.2.3.2 Individual names in the description language -- 2.2.4 Inferences -- 2.2.4.1 Reasoning tasks for concepts -- 2.2.4.2 Eliminating the TBox -- 2.2.4.3 Reasoning tasks for ABoxes -- 2.2.4.4 Closed- vs. open-world semantics -- 2.2.5 Rules -- 2.3 Reasoning algorithms -- 2.3.1 Structural subsumption algorithms -- 2.3.2 Tableau algorithms -- 2.3.2.1 A tableau-based satisfiability algorithm for ALCN -- 2.3.2.2 Complexity issues -- 2.3.2.3 Extension to the consistency problem for ABoxes -- 2.3.2.4 Extension to general inclusion axioms -- 2.3.2.5 Extension to other language constructors -- 2.3.3 Reasoning w.r.t. terminologies -- 2.3.3.1 Acyclic terminologies -- 2.3.3.2 Cyclic terminologies -- 2.4 Language extensions -- 2.4.1 Role constructors -- 2.4.2 Expressive number restrictions -- 2.4.3 Role-value-maps -- Acknowledgement -- 3 Complexity of Reasoning -- Abstract -- 3.1 Introduction -- 3.1.1 Intuition: sources of complexity -- 3.1.1.1 OR-branching -- 3.1.1.2 AND-branching -- 3.1.2 Overview of the chapter -- 3.2 OR-branching: finding a model -- 3.2.1 Intractability in FL -- 3.2.2 Intractability in FL- plus qualified existential quantification and number restrictions -- 3.2.2.1 Simulating ER.C with role conjunction -- 3.3 AND-branching: finding a clash.
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3.3.1 Intractability of satisfiability in ALE -- 3.3.2 FL− plus role conjunction and role inverse -- 3.3.3 FL− plus role conjunction and role chain -- 3.3.4 FL− plus role chain and role inverse -- 3.3.4.1 Simulating ER.C via role chains and role inverses -- 3.4 Combining sources of complexity -- 3.4.1 PSpace -hardness of satisfiability in ALC -- 3.4.2 A remark on reductions -- 3.5 Reasoning in the presence of axioms -- 3.5.1 Results from Propositional Dynamic Logic -- 3.5.2 Axioms and succinct representations of AND-OR graphs -- 3.5.3 Syntax restrictions on axioms -- 3.6 Undecidability -- 3.6.1 Undecidability of role-value-maps -- 3.7 Reasoning about individuals in ABoxes -- 3.8 Discussion -- 3.9 A list of complexity results for subsumption and satisfiability -- 3.9.1 Notation -- 3.9.2 Subsumption in PTime -- 3.9.3 NPand conp -- 3.9.4 PSpace -- 3.9.5 ExpTime -- 3.9.6 NExpTime -- 3.9.7 Undecidability results -- Acknowledgements -- 4 Relationships with other Formalisms -- Abstract -- 4.1 AI knowledge representation formalisms -- 4.1.1 Semantic networks -- 4.1.2 Frame systems -- 4.1.3 Conceptual graphs -- 4.2 Logical formalisms -- 4.2.1 Restricted variable fragments -- 4.2.2 Modal logics -- 4.2.3 Guarded fragments -- 4.3 Database models -- 4.3.1 Semantic data models -- 4.3.1.1 Formalization -- 4.3.1.2 Correspondence with Description Logics -- 4.3.1.3 Applications of the correspondence -- 4.3.2 Object-oriented data models -- 4.3.2.1 Formalization -- 4.3.2.2 Correspondence with Description Logics -- 4.3.2.3 Applications of the correspondence -- 4.3.3 Semistructured data models and XML -- 4.3.3.1 Relationship between semistructured data and Description Logics -- 4.3.3.2 Relationship between XML and Description Logics -- 5 Expressive Description Logics -- Abstract -- 5.1 Introduction.
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5.2 Correspondence between Description Logics and Propositional Dynamic Logics -- 5.2.1 Description Logics -- 5.2.2 Propositional Dynamic Logics -- 5.2.3 The correspondence -- 5.3 Functional restrictions -- 5.3.1 Automata on infinite trees -- 5.3.2 Reasoning in ALCFIreg -- 5.4 Qualified number restrictions -- 5.4.1 Reification of roles -- 5.4.2 Reducing ALCQIreg to ALCFIreg -- 5.5 Objects -- 5.6 Fixpoint constructs -- 5.7 Relations of arbitrary arity -- 5.7.1 Boolean constructs on roles and role inclusion axioms -- 5.7.2 Structured objects -- 5.8 Finite model reasoning -- 5.8.1 Finite model reasoning using linear inequalities -- 5.8.2 Finite model reasoning in expressive Description Logics -- 5.9 Undecidability results -- 5.9.1 Boolean constructs on complex roles -- 5.9.2 Role-value-maps -- 5.9.3 Number restrictions on complex roles -- 6 Extensions to Description Logics -- Abstract -- 6.1 Introduction -- 6.2 Language extensions -- 6.2.1 Concrete domains -- 6.2.1.1 The family of Description Logics ALC(D) -- 6.2.1.2 Predicate restrictions on role chains -- 6.2.1.3 Predicate restrictions defining roles -- 6.2.2 Modal extensions -- 6.2.3 Epistemic operators -- 6.2.3.1 ALCK as a query language -- 6.2.3.2 Semantics for procedural rules -- 6.2.3.3 An extension of ALCK -- 6.2.4 Temporal extensions -- 6.2.5 Representing uncertain and vague knowledge -- 6.2.5.1 Probabilistic extensions -- 6.2.5.2 Fuzzy extensions -- 6.2.6 Extensions by default rules -- 6.3 Non-standard inference problems -- 6.3.1 Techniques for solving non-standard inferences - a general remark -- 6.3.2 Least common subsumer and most specific concept -- 6.3.2.1 Computing the lcs and the msc -- 6.3.3 Unification and matching -- 6.3.3.1 Unification -- 6.3.3.2 Matching -- 6.3.3.3 Results on matching and unification -- 6.3.4 Concept rewriting -- Acknowledgement -- Part II Implementation.
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7 From Description Logic Provers to Knowledge Representation Systems -- Abstract -- 7.1 Introduction -- 7.2 Basic access -- 7.3 Advanced application access -- 7.3.1 Efficiency -- 7.3.2 Wide application programming interface -- 7.3.3 Remote and concurrent access -- 7.3.4 Platforms -- 7.4 Advanced human access -- 7.4.1 Explanation -- 7.4.2 Error handling -- 7.4.3 Pruning -- 7.4.4 Knowledge acquisition -- 7.5 Other technical concerns -- 7.6 Public relations concerns -- 7.7 Summary -- 8 Description Logic Systems -- Abstract -- 8.1 New light through old windows? -- 8.2 The first generation -- 8.3 Second generation Description Logic systems -- Classic -- Loom -- Back and Flex -- Kris -- Crack -- Other systems -- Summary: standard inference services of Description Logics systems -- 8.4 The next generation: Fact, Dlp and Racer -- Fact -- Dlp -- Racer -- 8.5 Lessons learned -- 9 Implementation and Optimization Techniques -- Abstract -- 9.1 Introduction -- 9.1.1 Performance analysis -- 9.2 Preliminaries -- 9.2.1 Syntax and semantics -- 9.2.2 Reasoning services -- 9.2.3 Unfolding -- 9.2.4 Internalization -- 9.3 Subsumption-testing algorithms -- 9.3.1 Structural subsumption algorithms -- 9.3.2 Logical algorithms -- 9.3.2.1 Tableau algorithms -- 9.4 Theory versus practice -- 9.4.1 Worst-case complexity -- 9.4.2 Typical-case complexity -- 9.4.3 Reasoning with a knowledge base -- 9.5 Optimization techniques -- 9.5.1 Pre-processing optimizations -- 9.5.1.1 Normalization -- 9.5.1.2 Absorption -- 9.5.2 Optimizing classification -- 9.5.3 Optimizing subsumption testing -- 9.5.4 Optimizing satisfiability testing -- 9.5.4.1 Semantic branching search -- 9.5.4.2 Local simplification -- 9.5.4.3 Dependency directed backtracking -- 9.5.4.4 Heuristic guided search -- 9.5.4.5 Caching satisfiability status -- 9.6 Discussion -- Part III Applications.
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10 Conceptual Modeling with Description Logics.
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