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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
This volume is a selection of papers presented at the Fourth International Workshop on Artificial Intelligence and Statistics held in January 1993. These biennial workshops have succeeded in bringing together researchers from Artificial Intelligence and from Statistics to discuss problems of mutual interest. The exchange has broadened research in both fields and has strongly encour aged interdisciplinary work. The theme ofthe 1993 AI and Statistics workshop was: "Selecting Models from Data". The papers in this volume attest to the diversity of approaches to model selection and to the ubiquity of the problem. Both statistics and artificial intelligence have independently developed approaches to model selection and the corresponding algorithms to implement them. But as these papers make clear, there is a high degree of overlap between the different approaches. In particular, there is agreement that the fundamental problem is the avoidence of "overfitting"-Le., where a model fits the given data very closely, but is a poor predictor for new data; in other words, the model has partly fitted the "noise" in the original data.
This book presents methods for investigating whether relationships are linear or nonlinear and for adaptively fitting appropriate models when they are nonlinear. Data analysts will learn how to incorporate nonlinearity in one or more predictor variables into regression models for different types of outcome variables. Such nonlinear dependence is often not considered in applied research, yet nonlinear relationships are common and so need to be addressed. A standard linear analysis can produce misleading conclusions, while a nonlinear analysis can provide novel insights into data, not otherwise possible. A variety of examples of the benefits of modeling nonlinear relationships are presented th...
Including entries from disciplines across the social sciences, this two-volume set provides coverage of a variety of issues related to the theory, research, practice and policy of health within a family context.
The continued growth in the design and implementation of software systems that utilize the principles of software engineering led to the calling of this landmark conference. It was an opportunity for vendors, academics, practitioners and graduate students to discuss experiences, problems and successes in software systems and the real effects that 'Software Engineering' methodologies have actually had in the world of computer software.
Published in honor of the sixty-fifth birthday of Professor Ingram Olkin of Stanford University. Part I contains a brief biography of Professor Olkin and an interview with him discussing his career and his research interests. Part II contains 32 technical papers written in Professor Olkin's honor by his collaborators, colleagues, and Ph.D. students. These original papers cover a wealth of topics in mathematical and applied statistics, including probability inequalities and characterizations, multivariate analysis and association, linear and nonlinear models, ranking and selection, experimental design, and approaches to statistical inference. The volume reflects the wide range of Professor Olkin's interests in and contributions to research in statistics, and provides an overview of new developments in these areas of research.
This book will help readers understand the practice of qualitative research--whether they want to do it, teach it, or just learn about it. All the major research phases are encompassed (startup, design, data collection, analysis, and composing), including newly emerging trends. Numerous easy-to-read vignettes show how other scholars have successfully implemented specific procedures. Equally distinctive, the book presents qualitative research as an adaptive craft. The array of choices among different procedures and methods enables readers to customize their own studies and to accommodate different worldviews and genres. New to This Edition: *Stronger discussion of different worldviews (e.g., ...