## Principles of Artificial IntelligenceA classic introduction to artificial intelligence intended to bridge the gap between theory and practice, Principles of Artificial Intelligence describes fundamental AI ideas that underlie applications such as natural language processing, automatic programming, robotics, machine vision, automatic theorem proving, and intelligent data retrieval. Rather than focusing on the subject matter of the applications, the book is organized around general computational concepts involving the kinds of data structures used, the types of operations performed on the data structures, and the properties of the control strategies used. Principles of Artificial Intelligenceevolved from the author's courses and seminars at Stanford University and University of Massachusetts, Amherst, and is suitable for text use in a senior or graduate AI course, or for individual study. |

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Page 110

A rule is applicable if the global database contains a symbol matching its left -

hand side . The effect on the ... We can keep track of these

the resulting global databases by an interesting structure called a derivation

graph .

A rule is applicable if the global database contains a symbol matching its left -

hand side . The effect on the ... We can keep track of these

**rule applications**andthe resulting global databases by an interesting structure called a derivation

graph .

Page 112

the commutative system , using its rules , as the forward - directed system and the

decomposable system , using reverse direction rules , as the backward - directed

system . We can ... The

the commutative system , using its rules , as the forward - directed system and the

decomposable system , using reverse direction rules , as the backward - directed

system . We can ... The

**rule application**adds one new node to the structure .Page 406

To use a network implication as a backward rule , the CONSE structure (

regarded as a fact ) must match the goal structure . Then , the ANTE structure (

appropriately instantiated ) is the subgoal produced by the

Again , the ...

To use a network implication as a backward rule , the CONSE structure (

regarded as a fact ) must match the goal structure . Then , the ANTE structure (

appropriately instantiated ) is the subgoal produced by the

**rule application**.Again , the ...

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### Contents

PROLOGUE | 1 |

PRODUCTION SYSTEMS AND AL | 17 |

SEARCH STRATEGIES FOR | 53 |

Copyright | |

12 other sections not shown

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### Common terms and phrases

achieve actions algorithm AND/OR graph answer applied arcs Artificial Intelligence assume attempt backward block called chapter clauses CLEAR(C complete component condition conjunction consider consistent contains control strategy corresponding cost database deduction Deleters described direction discussed evaluation example expression F-rule fact Figure formula function given global database goal goal wff HANDEMPTY heuristic implication important initial instance involves JOHN knowledge labeled language literals logically match methods move namely node Note obtained occur ONTABLE(A operation path possible precondition predicate calculus problem procedure production system proof prove quantified reasoning refutation represent representation resolution resolvent result robot rule satisfied selected sequence shown in Figure simple solution graph solve specify statement step STRIPS structure subgoal substitutions successors Suppose symbols termination theorem unifying unit University variables