Principles of Artificial Intelligence
A 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.
THE MONOTONE RESTRICTION Describing the GRAPHSEARCH procedure, we noted that when a node n is expanded, some of its successors may already be on OPEN or CLOSED. The search tree may then need to be adjusted so that it defines the least ...
We now show that given a rather mild and reasonable restriction on h, when A* selects a node for expansion it has already ... A heuristic function, h, is said to satisfy the monotone restriction if for all nodes n, and n, such that n, ...
Using the monotone restriction, we have that g*(ni) + h (ni) < g”(ni) + c (ni, n +1) + h(n +, ). Since ni and ni + are on an optimal path g*(n+1) = g”(ni) + c (ni, n +1), therefore [g *(ni) + h (ni)] = [g”(n +1) + h(n +4)].
When the monotone restriction is not satisfied, it is possible that some node has a smaller f value at expansion than that of a previously expanded node. We can exploit this observation to improve the efficiency of A* under this ...
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CHAPTER 3 SEARCH STRATEGIES FOR DECOMPOSABLE PRODUCTION SYSTEMS
CHAPTER 4 THE PREDICATE CALCULUS IN AI
CHAPTER 5 RESOLUTION REFUTATION SYSTEMS
CHAPTER 6 RULEBASED DEDUCTION SYSTEMS
CHAPTER 7 BASIC PLANGENERATING SYSTEMS
CHAPTER 8 ADVANCED PLANGENERATING SYSTEMS
CHAPTER 9 STRUCTURED OBJECT REPRESENTATIONS