flex Expert System Toolkit - LPIS

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Appendix B - Formal Definition of KSL 196 KSL Objects Variant This section describes the actual objects of KSL (i.e. those constructs which correspond to entities in your particular domain). They range from variants which can change in value through time (by assignment) to set abstractions which portray a (possibly infinite) collection of objects. variant( Type ) --> ['('], variant( Type ), [')'] . variant( Type ) --> variant( Type ), [of], variant( Type ) . variant( Type ) --> variant( Type ), [`,s], variant( Type ) . % Type can be simple or schema % attribute % 'of' is right associative % frame or instance % frame or instance % '`s' is left associative % attribute variant( Type ) --> optional( determiner ), name( variant ) . determiner --> [the] | [an] | [a] . variant( schema ) --> existential, name( variant ) . existential --> [some,instance,of] | [any,instance,of] | [some] | [any] . variant( schema ) --> thing . 6 <strong>flex</strong> toolkit
Appendix B - Formal Definition of KSL 197 Set thing --> [something] | [anything] | [somebody] | [anybody] . implicit_set --> ['{'], variable( member ), where, disjunction( condition ), ['}'] . where --> [where] | [such,that] | [:] . implicit_set --> ['{'], disjunction( explicit_set ), ['}'] . explicit_set --> sequence_separator( expression, set_join ) . set_join --> [','] | [and] . implicit_set --> universal, name( group/frame/instance ), optional( conjunction( slot_test ) ) . universal --> [all] | [every] | [each] . slot_test --> [whose], name( attribute ), comparison . General Term term --> [$], <strong>flex</strong> toolkit 7
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flex Reference By Dave Westwood
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The contents of this manual describ
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Contents 4 Contents Contents 4 1. I
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Contents 6 KSL Sentences 81 Frames
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Contents 8 Variant 196 Set 197 Gene
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1. Introduction 10 Forward Chaining
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2. Frames and Inheritance 12 2. Fra
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2. Frames and Inheritance 14 Defaul
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2. Frames and Inheritance 16 flex t
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2. Frames and Inheritance 18 define
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2. Frames and Inheritance 20 employ
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2. Frames and Inheritance 22 Inheri
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2. Frames and Inheritance 24 Depth-
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2. Frames and Inheritance 26 Univer
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2. Frames and Inheritance 28 The fl
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3. Forward Chaining 30 the axioms a
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3. Forward Chaining 32 flex toolkit
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3. Forward Chaining 34 A Simple Mod
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3. Forward Chaining 36 The basic cy
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3. Forward Chaining 38 First Come F
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3. Forward Chaining 40 considered.
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4. Data-Driven Programming 42 data-
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4. Data-Driven Programming 44 Const
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4. Data-Driven Programming 46 • c
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4. Data-Driven Programming 48 conte
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5. Questions And Answers 50 Rather
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5. Questions And Answers 52 Customi
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5. Questions And Answers 54 answer
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6. Anatomy of a flex Program 56 ?-
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6. Anatomy of a flex Program 58 fle
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6. Anatomy of a flex Program 60 and
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7. Knowledge Specification Language
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8. Run-Time Interpretation of KSL 1
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9. Flex Predicates 120 9. flex Tool
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9. Flex Predicates 122 ask( +Name )
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9. Flex Predicates 124 flex toolkit
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9. Flex Predicates 126 every_instan
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9. Flex Predicates 128 forward_chai
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9. Flex Predicates 130 Examples fle
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9. Flex Predicates 132 are : Search
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9. Flex Predicates 134 isa_demon( ?
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9. Flex Predicates 136 Example ?- i
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9. Flex Predicates 142 new_group( +
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9. Flex Predicates 144 one of the f
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Page 150 and 151: 9. Flex Predicates 148 the agenda.
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Page 154 and 155: 9. Flex Predicates 152 remove_quest
Page 156 and 157: 9. Flex Predicates 154 spied_chain
Page 158 and 159: 9. Flex Predicates 156 If the exist
Page 160 and 161: 11. Example - Robbie Goes Shopping
Page 168 and 169: Appendix A - Examples 166 Appendix
Page 170 and 171: tail Appendix A - Examples 168 herb
Page 172 and 173: Appendix A - Examples 170 Represent
Page 174 and 175: Appendix A - Examples 172 The Ident
Page 176 and 177: Appendix A - Examples 174 Example 2
Page 178 and 179: Appendix A - Examples 176 The Rules
Page 180 and 181: Appendix A - Examples 178 group sta
Page 182 and 183: Appendix B - Formal Definition of K
Page 204 and 205: Appendix C - KSL Keyword Glossary 2
Page 228 and 229: Appendix D - Dealing with Uncertain
Page 234 and 235: Index 232 — GENERAL INDEX — —
Page 236 and 237: Index 234 cycle, 111 cycle/3, 106 c
Page 238 and 239: Index 236 attribute of, 51 child, 7
Page 240 and 241: Index 238 isa_exception/1, 117 isa_
Page 242 and 243: Index 240 Ordering, 58, 59, 88, 105
Page 244 and 245: Index 242 create, 128 disabling of,
Page 246 and 247: Index 244 Updating agenda, 29, 74 U
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Index 246 false, 180, 193 first, 72
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Index 248 —flex PREDICATES INDEX
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Index 250 run_data/0, 137 run_data/
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flex Expert System Toolkit - LPIS

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