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Most Helpful Customer Reviews
22 of 24 people found the following review helpful:
5.0 out of 5 stars
important and well developed approaches to pattern recognition and machine learning through neural nets.,
By
This review is from: Pattern Recognition and Neural Networks (Hardcover)
If you want a nice up-to-date treatment on neural networks and statistical pattern recognition with lots of nice pictures and an elementary treatment, I recommend the new edition of Duda and Hart. However, neural networks were basically started by the computer-science / artificial intelligence community using analogies to the human nervous system and the perceived connections to the human thought processes. These connections and arguments are weak.
However, a statistical theory of nonlinear classification algorithms shows that these methods have nice properties and have mathematical justification. The statistical pattern recognition research is well over 30 years old and is very well established. So these connections are important for putting neural networks on firm ground and providing greater acceptability from the statistical as well as the engineering community. Ripley provides a theoretical threatment of the state-of-the-art in statistical pattern recognition. His treatment is thorough, covering all the important developments. He provides a large bibliography and a nice glossary of terms in the back of the book. Recent papers on neural networks and data mining are often quick to generate results but not very good at providing useful validation techniques that show that perceived performance is not just an artifact of overfitting a model. This is an area where statisticians play a very important role, as they are keenly aware through their experience with regression modeling and prediction, of the crucial need for cross-validation. Ripley covers this quite clearly in Section 2.6 titled "How complex a model do we need?" It is nice to see the thoroughness of this work. For example, in error rate estimation, many know of the advances of Lachenbruch and Mickey on error rate estimation in discriminant analysis and the further advances of Efron and others with the bootstrap. But in between there was also significant progress by Glick on smooth estimators. This work has been overlooked by many statisticians probably because some of it appears in the engineering literature (but one important paper was in the Journal of the American Statistical Association [JASA] in 1972). To some extent this oversight may be due to the fact that it was not mentioned in Efron's famous 1983 JASA paper and hence is usually missed in the bootstrap literature. Bootstrap methods and cross-validation play a prominent role in this text. This is an excellent reference book for anyone seriously interested in pattern recognition research. For applied and theoretical statisticians who want a good account of the theory behind neural networks it is a must.
17 of 18 people found the following review helpful:
5.0 out of 5 stars
A synthesis, not an introduction,
By A Customer
This review is from: Pattern Recognition and Neural Networks (Hardcover)
This text is wonderful. As some have pointed out, it might not be the best introduction to statistical pattern recognition and classification. Not every text should strive to be introductory, however, and this work shines for other reasons. The true strength of the book is its synthesis of material from diverse domains in a single text. My experience has been in the realm of statistics, and it was insightful to find that neural network approaches share much with traditional classification and discrimination techniques. I find the book enlighting not so much because it explains a given technique in great detail, but because it explains how a number of techniques are related and differ from one another. In this sense, it has opened up a whole new world of approaches to problems I encounter, that I had previously deemed inapplicable because they were "AI engineering techniques" or some such thing. If you want to learn about the details of a particular approach to pattern recognition--e.g., ICA, kohonen maps, SVM, etc.--find a different text. If you want an overview of the field of pattern recognition, however, buy this text. It provides a comprehensive, integrative perspective on classical and modern techniques from a number of disciplines. In fact, I would recommend this text as a complement to a more detailed text on a given pattern recognition technique--the one will fill in the details Ripley necessarily skims, and Ripley will explain how the technique is related to everything else.
10 of 10 people found the following review helpful:
4.0 out of 5 stars
not for the faint at heart, but such a pleasure to read,
By Boris Aleksandrovsky (San Francisco, CA United States) - See all my reviews
This review is from: Pattern Recognition and Neural Networks (Hardcover)
Let me start by saying that this book assumes a lot of background, especially in statistics. It dives into the math right away without even a hint or a gentle slope. But what I appreciate is that math is never used for its own sake, it is always justified. The book starts with the introduction to the problems neural nets are to be applied to - pattern recognition task. It proceeds to the elements of statistical decision theory, then goes up to linear discriminant analysis and perceptrons, then up you go to feed-forward neural nets. Non-parametric models and tree-based classifiers are covered next. Belief networks and unsupervised methods (MDS, clustering, etc..) follow. Coverage is extensive, although I would like to see more in the areas of unsupervised learning, which is quite foundational to the whole business.What sells me on this book quite frankly is that is always keeps an eye on a real-world example. No model or algorithm is introduced without a real-world problem it was intended to solve. You would be better served by the Bishop book (Neural Networks for Pattern Recognition, by C.Bishop ISBN:0198538642) if you are looking for a quick introduction. I would say Ripley's book is the <it>perfect second book on the subject</it>. I must aplaud the editors and designers of the book. A book itself, apart from the material it covers, is an aestetically most pleasent creation for the somewhat dry subject. Its use of margins is a piece of art - margins are wide, accessible, important points are highlighted there, and you can get to the needed point by flipping the pages quickly. The quality of paper is very good, the book opens wells, and holds its form very well. If you take it seriously and use it often, these qualities will gain in importance.
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