## 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 204

Goal literals ( as well as rules ) can be used to add descendants to the AND / OR

graph . When one of the goal literals matches a literal labeling a

of the graph , we add a new descendant of node n , labeled by the matching ...

Goal literals ( as well as rules ) can be used to add descendants to the AND / OR

graph . When one of the goal literals matches a literal labeling a

**literal node**, n ,of the graph , we add a new descendant of node n , labeled by the matching ...

Page 210

This expression , in turn , corresponds to the solution graph terminating in the

a literal L ' labeling a

This expression , in turn , corresponds to the solution graph terminating in the

**literal nodes**labeled by R ( A ) and Q ( x ) . ... When a goal literal , L , unifies witha literal L ' labeling a

**literal node**, n , of the graph , we can add a match arc ...Page 215

Such a B - rule is applicable to an AND / OR graph representing a goal wff if that

graph contains a

applying the rule is to add a match arc from the node labeled by L ' to a new ...

Such a B - rule is applicable to an AND / OR graph representing a goal wff if that

graph contains a

**literal node**labeled by L ' that unifies with L . The result ofapplying the rule is to add a match arc from the node labeled by L ' to a new ...

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### Contents

PROLOGUE | 1 |

PRODUCTION SYSTEMS AND AI | 17 |

SEARCH STRATEGIES FOR | 53 |

Copyright | |

10 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 backtracking backward block called chapter clause CLEAR(C complete component condition consider consistent contains control strategy corresponding cost database deduction Deleters described direction discussed efficient evaluation example expression F-rule fact Figure formula function given global database goal goal stack goal wff HANDEMPTY heuristic important initial involves JOHN knowledge labeled language literals logic 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 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