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Read e-book online Neural Network Learning and Expert Systems PDF

By Stephen I. Gallant

ISBN-10: 0262071452

ISBN-13: 9780262071451

Neural community studying and specialist Systems is the 1st ebook to give a unified and in-depth improvement of neural community studying algorithms and neural community specialist platforms. specially appropriate for college students and researchers in desktop technology, engineering, and psychology, this article and reference presents a scientific improvement of neural community studying algorithms from a computational standpoint, coupled with an intensive exploration of neural community specialist structures which indicates how the facility of neural community studying could be harnessed to generate professional platforms automatically.

Features contain a entire therapy of the normal studying algorithms (with many proofs), in addition to a lot unique study on algorithms and specialist structures. extra chapters discover positive algorithms, introduce computational studying concept, and concentrate on specialist method purposes to noisy and redundant problems.

For scholars there's a huge choice of routines, in addition to a sequence of programming tasks that result in an in depth neural community software program package deal. the entire neural community types tested may be carried out utilizing average programming languages on a microcomputer.

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2 Given a set of noncontradictory training examples with Boolean features and c lass ifi catio ns there exists an MLP that pr oduces the correct output for all training examples. 0 , Being able to represent an y Boolean function by a selector network is somewhat of a Pyrrhic victory. There are many functions that have out­ puts of true for about half of their p o ssible inp ut patterns, so that the 38 Basics flat selector construction would use about 2P-l cells to represent these functions. This is simply too many cells.

We can compute the probability that at least one of the remaining 999 vectors will differ by at most one feature from the noisy vector by (- 1- 1 Object 2 3 1,000 ) 00 1 999 �'000 2 1 � 220 1•000 2 = 80 2-9 . Local representation ... ... ( - I , -1, -1, ... , -1, (-I, -1, ( -1, -1, ( + 1, - 1 , - 1, ... Distributed representation +1) , +1, -I) ( + 1, -1, -1, + 1, + 1, ) (-I, -1, +1, +1, -1, ... 8 Local and distributed representations for 1,000 objects using 1,000 cells. Representation Issues 41 Therefore it is virtually ce rtai n that the original concept will be closest to its noisy offspring.

27 Introduction and Important Definitions In 1982 Parker [ 1 5 1 , 1 52] rediscovered the algorithm and even patented it through Stanford University. (The patent was allowed to lapse ) By 1 98 6 we reach the point where research activity had so expanded and time for retrospective analysis had become so short that it seems prudent to end our historical overview. However, it is clear already that the next period will be a very exciting time for connectionist work by a large number of talented researchers.

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Neural Network Learning and Expert Systems by Stephen I. Gallant

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