Analyzing Time Interval Data
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Author | : Philipp Meisen |
Publisher | : Springer |
Total Pages | : 250 |
Release | : 2016-09-28 |
Genre | : Computers |
ISBN | : 3658157283 |
Download Analyzing Time Interval Data Book in PDF, Epub and Kindle
Philipp Meisen introduces a model, a query language, and a similarity measure enabling users to analyze time interval data. The introduced tools are combined to design and realize an information system. The presented system is capable of performing analytical tasks (avoiding any type of summarizability problems), providing insights, and visualizing results processing millions of intervals within milliseconds using an intuitive SQL-based query language. The heart of the solution is based on several bitmap-based indexes, which enable the system to handle huge amounts of time interval data.
Author | : Jianguo Sun |
Publisher | : Springer |
Total Pages | : 304 |
Release | : 2007-05-26 |
Genre | : Mathematics |
ISBN | : 0387371192 |
Download The Statistical Analysis of Interval-censored Failure Time Data Book in PDF, Epub and Kindle
This book collects and unifies statistical models and methods that have been proposed for analyzing interval-censored failure time data. It provides the first comprehensive coverage of the topic of interval-censored data and complements the books on right-censored data. The focus of the book is on nonparametric and semiparametric inferences, but it also describes parametric and imputation approaches. This book provides an up-to-date reference for people who are conducting research on the analysis of interval-censored failure time data as well as for those who need to analyze interval-censored data to answer substantive questions.
Author | : Anjela Tinkova Tzontcheva |
Publisher | : |
Total Pages | : 316 |
Release | : 2007 |
Genre | : |
ISBN | : 9780494280775 |
Download A Computational Method for Analyzing Interval-censored Time-to-event Data in the Presence of Informative Examination Times Book in PDF, Epub and Kindle
In statistical analysis of time-to-event data, there are situations where the event of interest is only known to have occurred within an interval of time. Such data are considered interval-censored. In studying the human immunodeficiency (HIV) epidemic, interval-censored time-to-event data arise naturally, since the time an individual becomes HIV positive is not exactly known. In addition, individuals may undergo multiple tests before an event (HIV infection) is observed. When these tests are requested instead of pre-scheduled, their visit pattern may reflect individual risk behavior for which covariate information is not available. Therefore, the test visit times are said to be informative for the risk of HIV infection. Statistical methods that model the dependence between the event of interest and examination times are required for the analysis of such data. Farrington and Gay (1999, Statistics in Medicine 18: 1235-1248) analyzed interval-censored data with informative examination times using random effects which capture the correlation between individual's risk and visit rate. However, their proposed methodology is based on an approximation of the marginal log-likelihood and relies on large number of visits per individual. We developed a method for analyzing interval-censored time-to-event data with informative examination times, which addresses the limitations of the Farrington and Gay's method. Our method avoids the likelihood function approximation embedded in their method, thus leading to less biased parameter estimates and more accurate standard errors. Expectation-Maximization (EM) algorithm is used for parameter estimation. We employed multiple imputation of event times via Sampling/Importance Resampling method (Rubin, 1987, JASA 82). This reduced the likelihood of interval-censored time-to-event data to that of right-censored data. We evaluated the bias of parameter estimates of the proposed method and the accuracy of their standard by simulations. Under most simulation scenarios the new approach resulted in reduced bias compared to the Farrington and Gay's method. We applied the proposed method to the analysis of the Polaris HIV repeat testers data in Ontario.
Author | : Ding-Geng (Din) Chen |
Publisher | : CRC Press |
Total Pages | : 426 |
Release | : 2012-07-19 |
Genre | : Mathematics |
ISBN | : 1466504285 |
Download Interval-Censored Time-to-Event Data Book in PDF, Epub and Kindle
Interval-Censored Time-to-Event Data: Methods and Applications collects the most recent techniques, models, and computational tools for interval-censored time-to-event data. Top biostatisticians from academia, biopharmaceutical industries, and government agencies discuss how these advances are impacting clinical trials and biomedical research.Divid
Author | : Garrett Fitzmaurice |
Publisher | : CRC Press |
Total Pages | : 633 |
Release | : 2008-08-11 |
Genre | : Mathematics |
ISBN | : 142001157X |
Download Longitudinal Data Analysis Book in PDF, Epub and Kindle
Although many books currently available describe statistical models and methods for analyzing longitudinal data, they do not highlight connections between various research threads in the statistical literature. Responding to this void, Longitudinal Data Analysis provides a clear, comprehensive, and unified overview of state-of-the-art theory
Author | : Sulamith Frerich |
Publisher | : Springer |
Total Pages | : 955 |
Release | : 2017-04-12 |
Genre | : Computers |
ISBN | : 3319469169 |
Download Engineering Education 4.0 Book in PDF, Epub and Kindle
This book presents a collection of results from the interdisciplinary research project “ELLI” published by researchers at RWTH Aachen University, the TU Dortmund and Ruhr-Universität Bochum between 2011 and 2016. All contributions showcase essential research results, concepts and innovative teaching methods to improve engineering education. Further, they focus on a variety of areas, including virtual and remote teaching and learning environments, student mobility, support throughout the student lifecycle, and the cultivation of interdisciplinary skills.
Author | : Houbing Song |
Publisher | : Springer Nature |
Total Pages | : 780 |
Release | : 2021-05-27 |
Genre | : Mathematics |
ISBN | : 3030727955 |
Download Simulation Tools and Techniques Book in PDF, Epub and Kindle
This two-volume set constitutes the refereed post-conference proceedings of the 12th International Conference on Simulation Tools and Techniques, SIMUTools 2020, held in Guiyang, China, in August 2020. Due to COVID-19 pandemic the conference was held virtually. The 125 revised full papers were carefully selected from 354 submissions. The papers focus on simulation methods, simulation techniques, simulation software, simulation performance, modeling formalisms, simulation verification and widely used frameworks.
Author | : Julian P. T. Higgins |
Publisher | : Wiley |
Total Pages | : 672 |
Release | : 2008-11-24 |
Genre | : Medical |
ISBN | : 9780470699515 |
Download Cochrane Handbook for Systematic Reviews of Interventions Book in PDF, Epub and Kindle
Healthcare providers, consumers, researchers and policy makers are inundated with unmanageable amounts of information, including evidence from healthcare research. It has become impossible for all to have the time and resources to find, appraise and interpret this evidence and incorporate it into healthcare decisions. Cochrane Reviews respond to this challenge by identifying, appraising and synthesizing research-based evidence and presenting it in a standardized format, published in The Cochrane Library (www.thecochranelibrary.com). The Cochrane Handbook for Systematic Reviews of Interventions contains methodological guidance for the preparation and maintenance of Cochrane intervention reviews. Written in a clear and accessible format, it is the essential manual for all those preparing, maintaining and reading Cochrane reviews. Many of the principles and methods described here are appropriate for systematic reviews applied to other types of research and to systematic reviews of interventions undertaken by others. It is hoped therefore that this book will be invaluable to all those who want to understand the role of systematic reviews, critically appraise published reviews or perform reviews themselves.
Author | : Paul S.P. Cowpertwait |
Publisher | : Springer Science & Business Media |
Total Pages | : 262 |
Release | : 2009-05-28 |
Genre | : Mathematics |
ISBN | : 0387886982 |
Download Introductory Time Series with R Book in PDF, Epub and Kindle
This book gives you a step-by-step introduction to analysing time series using the open source software R. Each time series model is motivated with practical applications, and is defined in mathematical notation. Once the model has been introduced it is used to generate synthetic data, using R code, and these generated data are then used to estimate its parameters. This sequence enhances understanding of both the time series model and the R function used to fit the model to data. Finally, the model is used to analyse observed data taken from a practical application. By using R, the whole procedure can be reproduced by the reader. All the data sets used in the book are available on the website http://staff.elena.aut.ac.nz/Paul-Cowpertwait/ts/. The book is written for undergraduate students of mathematics, economics, business and finance, geography, engineering and related disciplines, and postgraduate students who may need to analyse time series as part of their taught programme or their research.
Author | : Marc Haßler |
Publisher | : |
Total Pages | : |
Release | : 2017 |
Genre | : |
ISBN | : |
Download Similarity Analysis of Time Interval Data Sets Regarding Time Shifts and Rescaling Book in PDF, Epub and Kindle