Alerta

Alerta PDF Author:
Publisher:
ISBN:
Category : Serials
Languages : en
Pages : 1260

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Book Description

Alerta

Alerta PDF Author:
Publisher:
ISBN:
Category : Serials
Languages : en
Pages : 1260

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Book Description


Introduction to Information Retrieval

Introduction to Information Retrieval PDF Author: Christopher D. Manning
Publisher: Cambridge University Press
ISBN: 1139472100
Category : Computers
Languages : en
Pages :

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Book Description
Class-tested and coherent, this textbook teaches classical and web information retrieval, including web search and the related areas of text classification and text clustering from basic concepts. It gives an up-to-date treatment of all aspects of the design and implementation of systems for gathering, indexing, and searching documents; methods for evaluating systems; and an introduction to the use of machine learning methods on text collections. All the important ideas are explained using examples and figures, making it perfect for introductory courses in information retrieval for advanced undergraduates and graduate students in computer science. Based on feedback from extensive classroom experience, the book has been carefully structured in order to make teaching more natural and effective. Slides and additional exercises (with solutions for lecturers) are also available through the book's supporting website to help course instructors prepare their lectures.

Indexes to the Epilepsy Accessions of the Epilepsy Information System

Indexes to the Epilepsy Accessions of the Epilepsy Information System PDF Author: J. Kiffin Penry
Publisher:
ISBN:
Category : Epilepsy
Languages : en
Pages : 1312

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Book Description


Sensitivity Analysis: Matrix Methods in Demography and Ecology

Sensitivity Analysis: Matrix Methods in Demography and Ecology PDF Author: Hal Caswell
Publisher: Springer
ISBN: 3030105342
Category : Social Science
Languages : en
Pages : 308

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Book Description
This open access book shows how to use sensitivity analysis in demography. It presents new methods for individuals, cohorts, and populations, with applications to humans, other animals, and plants. The analyses are based on matrix formulations of age-classified, stage-classified, and multistate population models. Methods are presented for linear and nonlinear, deterministic and stochastic, and time-invariant and time-varying cases. Readers will discover results on the sensitivity of statistics of longevity, life disparity, occupancy times, the net reproductive rate, and statistics of Markov chain models in demography. They will also see applications of sensitivity analysis to population growth rates, stable population structures, reproductive value, equilibria under immigration and nonlinearity, and population cycles. Individual stochasticity is a theme throughout, with a focus that goes beyond expected values to include variances in demographic outcomes. The calculations are easily and accurately implemented in matrix-oriented programming languages such as Matlab or R. Sensitivity analysis will help readers create models to predict the effect of future changes, to evaluate policy effects, and to identify possible evolutionary responses to the environment. Complete with many examples of the application, the book will be of interest to researchers and graduate students in human demography and population biology. The material will also appeal to those in mathematical biology and applied mathematics.

Ecological Inference

Ecological Inference PDF Author: Gary King
Publisher: Cambridge University Press
ISBN: 9780521542807
Category : Nature
Languages : en
Pages : 436

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Book Description
Drawing upon the recent explosion of research in the field, a diverse group of scholars surveys the latest strategies for solving ecological inference problems, the process of trying to infer individual behavior from aggregate data. The uncertainties and information lost in aggregation make ecological inference one of the most difficult areas of statistical inference, but these inferences are required in many academic fields, as well as by legislatures and the Courts in redistricting, marketing research by business, and policy analysis by governments. This wide-ranging collection of essays offers many fresh and important contributions to the study of ecological inference.

An Introduction to Categorical Data Analysis

An Introduction to Categorical Data Analysis PDF Author: Alan Agresti
Publisher: John Wiley & Sons
ISBN: 1119405270
Category : Mathematics
Languages : en
Pages : 393

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Book Description
A valuable new edition of a standard reference The use of statistical methods for categorical data has increased dramatically, particularly for applications in the biomedical and social sciences. An Introduction to Categorical Data Analysis, Third Edition summarizes these methods and shows readers how to use them using software. Readers will find a unified generalized linear models approach that connects logistic regression and loglinear models for discrete data with normal regression for continuous data. Adding to the value in the new edition is: • Illustrations of the use of R software to perform all the analyses in the book • A new chapter on alternative methods for categorical data, including smoothing and regularization methods (such as the lasso), classification methods such as linear discriminant analysis and classification trees, and cluster analysis • New sections in many chapters introducing the Bayesian approach for the methods of that chapter • More than 70 analyses of data sets to illustrate application of the methods, and about 200 exercises, many containing other data sets • An appendix showing how to use SAS, Stata, and SPSS, and an appendix with short solutions to most odd-numbered exercises Written in an applied, nontechnical style, this book illustrates the methods using a wide variety of real data, including medical clinical trials, environmental questions, drug use by teenagers, horseshoe crab mating, basketball shooting, correlates of happiness, and much more. An Introduction to Categorical Data Analysis, Third Edition is an invaluable tool for statisticians and biostatisticians as well as methodologists in the social and behavioral sciences, medicine and public health, marketing, education, and the biological and agricultural sciences.

Index Medicus

Index Medicus PDF Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1876

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Book Description
Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.

Current Index to Journals in Education

Current Index to Journals in Education PDF Author:
Publisher:
ISBN:
Category : Education
Languages : en
Pages : 1200

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Book Description


Indexes to the Epilepsy Accessions of the Epilepsy Information System

Indexes to the Epilepsy Accessions of the Epilepsy Information System PDF Author: James Kiffin Penry
Publisher:
ISBN:
Category : Epilepsy
Languages : en
Pages : 1376

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Book Description


Managing the Undesirables

Managing the Undesirables PDF Author: Michel Agier
Publisher: Polity
ISBN: 0745649017
Category : Political Science
Languages : en
Pages : 287

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Book Description
Official figures classify some fifty million of the world’s people as 'victims of forced displacement'. Refugees, asylum seekers, disaster victims, the internally displaced and the temporarily tolerated - categories of the excluded proliferate, but many more are left out of count. In the face of this tragedy, humanitarian action increasingly seems the only possible response. On the ground, however, the 'facilities' put in place are more reminiscent of the logic of totalitarianism. In a situation of permanent catastrophe and endless emergency, 'undesirables' are kept apart and out of sight, while the care dispensed is designed to control, filter and confine. How should we interpret the disturbing symbiosis between the hand that cares and the hand that strikes? After seven years of study in the refugee camps, Michel Agier reveals their 'disquieting ambiguity' and stresses the imperative need to take into account forms of improvisation and challenge that are currently transforming the camps, sometimes making them into towns and heralding the emergence of political subjects. A radical critique of the foundations, contexts, and political effects of humanitarian action.