J. Urbanowicz's Books

The Roller Coaster Lover's Companion

A Thrill Seeker's Guide to the World's Best Coasters

By: Steven J. Urbanowicz

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The Roller Coaster Lover's Companion

A Thrill Seeker's Guide to the World's Best Coasters

By: Steven J. Urbanowicz

Profusely illustrated and engagingly written, this book tells the whole exciting story of the history and development of roller coasters, from the first 15-foot-high, four-mile-per-hour Switchback Railway in Coney Island's 1884 amusement park to today's wild mega-monsters. Photos throughout.

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Page Count

164

Publisher

Citadel Press

Published Date

ISBN 10

0806523093

ISBN 13

9780806523095

Introduction to Learning Classifier Systems

By: Ryan J. Urbanowicz,Will N. Browne

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Introduction to Learning Classifier Systems

By: Ryan J. Urbanowicz,Will N. Browne

This accessible introduction shows the reader how to understand, implement, adapt, and apply Learning Classifier Systems (LCSs) to interesting and difficult problems. The text builds an understanding from basic ideas and concepts. The authors first explore learning through environment interaction, and then walk through the components of LCS that form this rule-based evolutionary algorithm. The applicability and adaptability of these methods is highlighted by providing descriptions of common methodological alternatives for different components that are suited to different types of problems from data mining to autonomous robotics. The authors have also paired exercises and a simple educational LCS (eLCS) algorithm (implemented in Python) with this book. It is suitable for courses or self-study by advanced undergraduate and postgraduate students in subjects such as Computer Science, Engineering, Bioinformatics, and Cybernetics, and by researchers, data analysts, and machine learning practitioners.

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Page Count

135

Publisher

Springer

Published Date

ISBN 10

3662550075

ISBN 13

9783662550076

Congruences for L-Functions

By: J. Urbanowicz,Kenneth S. Williams

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Congruences for L-Functions

By: J. Urbanowicz,Kenneth S. Williams

In [Hardy and Williams, 1986] the authors exploited a very simple idea to obtain a linear congruence involving class numbers of imaginary quadratic fields modulo a certain power of 2. Their congruence provided a unified setting for many congruences proved previously by other authors using various means. The Hardy-Williams idea was as follows. Let d be the discriminant of a quadratic field. Suppose that d is odd and let d = PIP2· . . Pn be its unique decomposition into prime discriminants. Then, for any positive integer k coprime with d, the congruence holds trivially as each Legendre-Jacobi-Kronecker symbol (~) has the value + 1 or -1. Expanding this product gives ~ eld e:=l (mod4) where e runs through the positive and negative divisors of d and v (e) denotes the number of distinct prime factors of e. Summing this congruence for o

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Page Count

266

Publisher

Springer Science & Business Media

Published Date

ISBN 10

9401595429

ISBN 13

9789401595421

Book's by J. Urbanowicz

The Roller Coaster Lover's Companion

The Roller Coaster Lover's Companion

Introduction to Learning Classifier Systems

Introduction to Learning Classifier Systems

Congruences for L-Functions

Congruences for L-Functions

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