ISBN: 9781849681940
Издательство: Packt Publishing

High Quality Content by WIKIPEDIA articles! Ambiguity aversion (also known as uncertainty aversion) describes an attitude of preference for known risks over unknown risks. It is demonstrated in the Ellsberg paradox (i.e. that people prefer to bet on an urn with 50 Red and 50 Blue balls, than in one with 100 total balls but where the number of blue or red balls is unknown). Note that it is not the same as risk aversion, since it is a rejection of types of risk based in part on measures of their certainty, not solely on their magnitude. Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.

ISBN: 978-6-1325-7269-1
Издательство: Книга по требованию
Дата выхода: июль 2011

ISBN: 978-3-8383-3872-9
Издательство: Книга по требованию
Дата выхода: июль 2011

Few studies have calculated the incidence of second primary melanoma. Previous studies were mainly based on relatively small hospital-based cohorts. This study describes the incidence of second primary melanoma in a large cohort identified using population-based cancer registry data obtained from the SEER program of the National Cancer Institution in the USA for the period 1973 to 2002. The incidence of second primary melanoma was estimated in males and females by age, anatomic site, histology and stage of the first melanoma. Poisson regression model was used to adjust relative rates for other factors. Данное издание не является оригинальным. Книга печатается по технологии...

ISBN: 978-3-8383-2832-4
Издательство: Книга по требованию
Дата выхода: июль 2011

Clinical trials often involve multiple endpoints that are clinically meaningful to determine efficacy and safety of the investigational medicinal product. These multiple outcomes are often measured over scheduled and/or unscheduled visits which add complexity when analyzing these types of data. This book is developed specifically to deal with multiple longitudinal outcomes in the framework of generalized estimating equations and their post-hoc multiplicity adjustment for the control of familywise error rate. The book covers a recent development and its extension of quasi-least squares to the application in clinical trials for the analysis of single and multiple longitudinal outcomes. A user-written SAS software with its complete code and...

ISBN: 978-3-6392-7140-9
Издательство: Книга по требованию
Дата выхода: июль 2011

ISBN: 978-3-8383-8486-3
Издательство: Книга по требованию
Дата выхода: июль 2011

Survey data has never been as indispensable as it is for XXI century society, especially because this type of data is the main source of information when regarding demographic and social characteristics of the population, economic activity, lifestyle patterns, and public opinion (Barnett, 1991). Longitudinal household surveys often use a complex sampling design to select the sample to be followed up over time. It is well known that complex sampling schemes may inflate the variances of estimators, especially as a result of clustering. This book presents evidences that design effects for longitudinal analyses can be greater than for corresponding cross-sectional analyses, implying that more caution is required before ignoring the complex...

ISBN: 978-3-6392-0295-3
Издательство: Книга по требованию
Дата выхода: июль 2011

Sollen im Rahmen einer statistischen Analyse Daten zu verschiedenen Gruppen untersucht werden, die sich bezuglich der Einstellungen eines interessierenden Faktors anordnen lassen, ist es meist nicht von Interesse, generelle Unterschiede, sondern vom Faktor abhangige Trends in den Daten aufzudecken. Soll dies mittels eines statistischen Tests geschehen, ist daher ein Trendtest fur geordnete Alternativen vorzuziehen. Diese Arbeit beschaftigt sich mit solchen Trendtests fur rechtszensierte Uberlebenszeiten. Anwendungsgebiete fur solche Tests sind beispielsweise klinische Dosisfindungsstudien oder praklinische Karzinogenese-Experimente. Die Autorin Sandra Leissen stellt eine Reihe bereits bekannter Trendtests vor. In der Hoffnung eine...

ISBN: 978-3-6390-5532-0
Издательство: Книга по требованию
Дата выхода: июль 2011

ISBN: 978-6-1315-2259-8
Издательство: Книга по требованию
Дата выхода: июль 2011

The use of local likelihood methods (Tibshirani and Hastie, 1987; Loader, 1996) in the presence of interval-censored or aggregated data leads to a natural consideration of an EM-type strategy, or a local EM algorithm. We consider local EM to analyze point process data that are either interval-censored or aggregated into counts. We present the formulation of local EM algorithms to estimate density, intensity and risk and their implementations using piecewise constant functions. It is shown that the use of the piecewise constant function at the E-step explicitly results in an iteration that involves an expectation, maximization and smoothing step, or an EMS algorithm considered in Silverman et al. (1990). Consequently, we reveal a...

ISBN: 978-3-6392-5254-5
Издательство: Книга по требованию
Дата выхода: июль 2011

ISBN: 9781849518987
Издательство: Packt Publishing

ISBN: 9781782167785
Издательство: Packt Publishing

ISBN: 9781849515283
Издательство: Packt Publishing

High Quality Content by WIKIPEDIA articles! In statistics, the Anscombe transform , named after Francis Anscombe, is a variance-stabilizing transformation that transforms a random variable with a Poisson distribution into one with an approximately Gaussian distribution. The Anscombe transform is widely used in photon-limited imaging where images naturally follow the Poisson law. The Anscombe transform is usually used to pre-process the data in order to have the noise of constant standard deviation so as to apply denoising algorithms in the extensively studied framework of Gaussian additive noise.For the Poisson distribution the mean m, and variance v, are not independent: m = v Данное издание не является...

ISBN: 978-6-1338-8566-0
Издательство: Книга по требованию
Дата выхода: июль 2011

Diese Arbeit ist in der Arbeitsgruppe Angewandte Mathematische Statistik der Technischen Universitat Kaiserslautern entstanden und untersucht verschiedene popularen technischen Indikatoren auf realen und simulierten Finanzzeitreihen. Auf Basis von technischen Indikatoren werden im Wertpapierhandel Handelsstrategien definiert. Zusatzlich zu den einzelnen Indikatoren wurden auch Kombinationen von Indikatoren untersucht. Neben einer Einfuhrung in die verschiedenen Indikatoren und ihrer Handelsstrategien werden auch verschiedene Techniken der Zeitreihen Analyse vorgestellt. Zur Auswertung auf realen Daten wurden DAX, Dow Jones, USD/EUR Wechselkurs und Bund Future herangezogen. Die Simulation der Zeitreihen erfolgt mit Hilfe von verschiedenen...

ISBN: 978-3-6390-4397-6
Издательство: Книга по требованию
Дата выхода: июль 2011

ISBN: 9781847199188
Издательство: Packt Publishing

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Much research involving probability is done under the auspices of applied probability, the application of probability theory to other scientific and engineering domains. However, while such research is motivated (to some degree) by applied problems, it is usually the mathematical aspects of the problems that are of most interest to researchers (as is typical of applied mathematics in general). Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.

ISBN: 978-6-1328-5341-7
Издательство: Книга по требованию
Дата выхода: июль 2011

Queuing is a common occurrence in our daily life. People queue to be served in banks,workshops,bus stops, motor parks e.t.c.Apart from man-hours lost to queuing per day,it also leads to break down of law and order in situations where people try to jump queues.Hospitals are establishments where queuing is common.Cases have been witnessed where out-patients,while waiting,develop complications which can lead to death if quick medication is not provided.It happens to patients of Asthma,Heart disease,convulsion e.t.c.It is therefore necessary to evaluate the waiting times of out-patients with a view to reducing it to the minimum.This work analyzed the waiting time of out-patients at University of Ado-Ekiti Health Centre.Data were collected...

ISBN: 978-3-8433-7760-7
Издательство: Книга по требованию
Дата выхода: июль 2011

For the financial industry, it is of paramount importance to understand the statistical features of price processes. While statistical models can reproduce empirical findings, they cannot give insight into the causal relationships and the market's response to a changing environment. Microscopic models of financial markets are an approach to understand the underlying mechanisms determining the market behaviour. In this book, we give an introduction to the basic idea of microscopic modelling with a particular focus on the "Opinion Game", a microscopic market model introduced by Bovier, ?erny and Hryniv (2006). Within the framework of the Opinion Game, we devote ourselves to two issues: First, the market stability in dependence on long-term...

ISBN: 978-3-8381-1351-7
Издательство: Книга по требованию
Дата выхода: июль 2011

ISBN: 978-3-8383-9274-5
Издательство: Книга по требованию
Дата выхода: июль 2011

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Approximate Bayesian computation (ABC) is a family of computational techniques in Bayesian statistics. These simulation techniques operate on summary data (such as population mean, or variance) to make broad inferences with less computation than might be required if all available data were analyzed in detail. They are especially useful in situations where evaluation of the likelihood is computationally prohibitive, or whenever suitable likelihoods are not available. Данное издание не является оригинальным. Книга печатается по технологии...

ISBN: 978-6-1337-7991-4
Издательство: Книга по требованию
Дата выхода: июль 2011

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The approximation error in some data is the discrepancy between an exact value and some approximation to it. In the mathematical field of numerical analysis, the numerical stability of an algorithm in numerical analysis indicates how the error is propagated by the algorithm. One commonly distinguishes between the relative error and the absolute error. The absolute error is the magnitude of the difference between the exact value and the approximation. The relative error is the absolute error divided by the magnitude of the exact value. The percent error is the relative error expressed in terms of per 100....

ISBN: 978-6-1329-1212-1
Издательство: Книга по требованию
Дата выхода: июль 2011

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In statistics sampling bias is causing some members of the population to be less likely to be included than others. It results in a biased sample, a non- random sample of a population (or non-human factors) in which all participants are not equally balanced or objectively represented. If the bias makes estimation of population parameters impossible, the sample is a non-probability sample. If this is not accounted for, results can be erroneously attributed to the phenomenon under study rather than to the method of sampling. Данное издание не является оригинальным. Книга...

ISBN: 978-6-1328-7642-3
Издательство: Книга по требованию
Дата выхода: июль 2011

The present book which based on some aspects of small area estimation using auxiliary information is concerned with the Small Area Estimation Problem, with direct and indirect estimators including the generalized synthetic and composite estimators for small area estimation Approach.It is rather difficult to assess the performance of these estimators theoretically therefore it also contain a case base simulation study of crop acreage estimation for Inspector Land Revenue Circles (ILRCs) in jodhpur district of Rajasthan state, india,to compare the performance of various direct and indirect estimators.The book consists of the following five Chapters,each opening with the introduction and summary of the work carried out in the...

ISBN: 978-3-6393-1569-1
Издательство: Книга по требованию
Дата выхода: июль 2011

While the primary objective of multicenter clinical trials is to compare treatments for a specific disease, they also contain a lot of relevant additional information. For example, it may be interesting to investigate heterogeneity in outcome and in treatment effect over centers. Considering a frailty model including a random center effect and a random treatment by center interaction term, we demonstrate how to quantify this heterogeneity, to interpret it based on medically relevant quantities, and to identify center and patient specific factors explaining it. Based on the same idea, we also propose to study heterogeneity in prognostic index effect over centers, and to use this information to get a new insight in the validation of...

ISBN: 978-3-6392-1334-8
Издательство: Книга по требованию
Дата выхода: июль 2011