## 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 277

Consistent with our restrictions on the form of goal wffs , we assume here that the

Consistent with our restrictions on the form of goal wffs , we assume here that the

**preconditions**of our F - rules consist of a conjunction of ... Variables in these**precondition**formulas are assumed to have existential quantification .Page 278

straightforward : It follows if there are literals among the facts that unify with each of the

straightforward : It follows if there are literals among the facts that unify with each of the

**precondition**literals and if all of the mgu's are consistent ( that is , if these mgu's have a unifying composition ) .Page 349

F - rule 1 deletes a

F - rule 1 deletes a

**precondition**of F - rule 2 , and vice versa . They cannot both be first ! ( Sacerdoti ( 1977 ) called this type of conflict a " double cross . " ) The blame for the unavoidable deletion conflict might be assigned to ...### What people are saying - Write a review

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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 goal goal node 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