Since ROC curves have become ubiquitous in many application areas, the various advances have been scattered across disparate articles and texts. ROC Curves for Continuous Data is the first book solely devoted to the subject, bringing together all the relevant material to provide a clear understanding of how to analyze ROC curves.The fundamenta

Statistical evaluation of diagnostic performance in general and Receiver Operating Characteristic (ROC) analysis in particular are important for assessing the performance of medical tests and statistical classifiers, as well as for evaluating predictive models or algorithms. This book presents innovative approaches in ROC analysis, which are releva

“Puns and playfulness reign supreme” as a demoness learns that big birds of a feather don’t flock together in the New York Times–bestselling Xanth series (The Toronto Star). Seeking a solution to a perplexing personal problem, the delectable Demoness Metria asks for help from the wise Magician Humfrey. But before he will help her, she must perform a perilous mission: Rove the length and breadth of Xanth in search of a suitable jury for the trial of Roxanne Roc, a notably noble and virtuous bird charged with a most improbable offense. Exciting, exhilarating, and brimming with hilarious high jinks, Roc and a Hard Place is Xanth at its most enchanting. “[A] lighthearted series . . . many outlandish characters, adventures, jokes and plays on words.” —Publishers Weekly

Complementing a burgeoning area of interest and academic study, Roc the Mic Right explores the central role of language within the Hip Hop Nation (HHN). With its status convincingly argued as the best means by which to read Hip Hop culture, H. Samy Alim then focuses on discursive practices, such as narrative sequencing and ciphers, or lyrical circles of rhymers. Often a marginalized phenomenon, the complexity and creativity of Hip Hop lyrical production is emphasised, whilst Alim works towards the creation of a schema by which to understand its aesthetic. Using his own ethnographic research, Alim shows how Hip Hop language could be used in an educational context and presents a new approach to the study of the language and culture of the Hip Hop Nation: 'Hiphopography'. The final section of the book, which includes real conversational narratives from Hip Hop artists such as The Wu-Tang Clan and Chuck D, focuses on direct engagement with the language. A highly accessible and lively work on the most studied and read about language variety in the United States, this book will appeal not only to language and linguistics researchers and students, but holds a genuine appeal to anyone interested in Hip Hop or Black African Language.

Destined to become a star 'Once a star, always a star - and always remembered with love' Anna Neagle 'A phenomenon, an unspoilt movie star who can act' Noel Coward The archetypal British beauty, the Goddess of the Odeons' J. Arthur Rank

This book presents a unified and up-to-date introduction to ROC methodologies, covering both diagnosis (classification) and prediction. The emphasis is on the conceptual underpinning of ROC analysis and the practical implementation in diverse scientific fields. A plethora of examples accompany the methodologic discussion using standard statistical software such as R and STATA. The book arrives after two decades of intensive growth in both the methods and the applications of ROC analysis and presents a new synthesis. The authors provide a contemporary, integrated exposition of ROC methodology for both classification and prediction and include material on multiple-class ROC. This book avoids lengthy technical exposition and provides code and datasets in each chapter. Receiver Operating Characteristic Analysis for Classification and Prediction is intended for researchers and graduate students, but will also be useful for those that use ROC analysis in diverse disciplines such as diagnostic medicine, bioinformatics, medical physics, and perception psychology.

Signal detection theory--as developed in electrical engineering and based on statistical decision theory--was first applied to human sensory discrimination 40 years ago. The theoretical intent was to provide a valid model of the discrimination process; the methodological intent was to provide reliable measures of discrimination acuity in specific sensory tasks. An analytic method of detection theory, called the relative operating characteristic (ROC), can isolate the effect of the placement of the decision criterion, which may be variable and idiosyncratic, so that a pure measure of intrinsic discrimination acuity is obtained. For the past 20 years, ROC analysis has also been used to measure the discrimination acuity or inherent accuracy of a broad range of practical diagnostic systems. It was widely adopted by methodologists in the field of information retrieval, is increasingly used in weather forecasting, and is the generally preferred method in clinical medicine, primarily in radiology. This book attends to both themes, ROC analysis in the psychology laboratory and in practical diagnostic settings, and to their essential unity. The focus of this book is on detection and recognition as fundamental tasks that underlie most complex behaviors. As defined here, they serve to distinguish between two alternative, confusable stimulus categories, which may be perceptual or cognitive categories in the psychology laboratory, or different states of the world in practical diagnostic tasks. This book on signal detection theory in psychology was written by one of the developers of the theory, who co-authored with D.M. Green the classic work published in this area in 1966 (reprinted in 1974 and 1988). This volume reviews the history of the theory in engineering, statistics, and psychology, leading to the separate measurement of the two independent factors in all discrimination tasks, discrimination acuity and decision criterion. It extends the previous book to show how in several areas of psychology--in vigilance and memory--what had been thought to be discrimination effects were, in reality, effects of a changing criterion. The book shows that data plotted in terms of the relative operating characteristic have essentially the same form across the wide range of discrimination tasks in psychology. It develops the implications of this ROC form for measures of discrimination acuity, pointing up the valid ones and identifying several common, but invalid, ones. The area under the binormal ROC is seen to be supported by the data; the popular measures d' and percent correct are not. An appendix describes the best, current programs for fitting ROCs and estimating their parameters, indices, and standard errors. The application of ROC analysis to diagnostic tasks is also described. Diagnostic accuracy in a wide range of tasks can be expressed in terms of the ROC area index. Choosing the appropriate decision criterion for a given diagnostic setting--rather than considering some single criterion to be natural and fixed--has a major impact on the efficacy of a diagnostic process or system. Illustrated here by separate chapters are diagnostic systems in radiology, information retrieval, aptitude testing, survey research, and environments in which imminent dangerous conditions must be detected. Data from weather forecasting, blood testing, and polygraph lie detection are also reported. One of these chapters describes a general approach to enhancing the accuracy of diagnostic systems.