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The local power of the gradient test
(SPRINGER HEIDELBERGHEIDELBERG, 2012)
The asymptotic expansion of the distribution of the gradient test statistic is derived for a composite hypothesis under a sequence of Pitman alternative hypotheses converging to the null hypothesis at rate n(-1/2), n being ...
Local power and size properties of the LR, Wald, score and gradient tests in dispersion models
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
We derive asymptotic expansions for the nonnull distribution functions of the likelihood ratio, Wald, score and gradient test statistics in the class of dispersion models, under a sequence of Pitman alternatives. The ...
A note on the local power of the LR, Wald, score and gradient tests
(INST MATHEMATICAL STATISTICSCLEVELAND, 2012)
This paper examines the local power of the likelihood ratio, Wald, score and gradient tests under the presence of a scalar parameter, phi say, that is orthogonal to the remaining parameters. We show that some of the ...
Testes de hipóteses em modelos de sobrevivência com Fração de cura
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Matemática Aplicada e EstatísticaProbabilidade e Estatística; Modelagem Matemática, 2012-08-14)
Survival models deals with the modeling of time to event data. However in some
situations part of the population may be no longer subject to the event. Models
that take this fact into account are called cure rate models. ...
Testes em modelos weibull na forma estendida de Marshall-Olkin
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Matemática Aplicada e EstatísticaProbabilidade e Estatística; Modelagem Matemática, 2011-12-28)
In survival analysis, the response is usually the time until the occurrence of an event of interest,
called failure time. The main characteristic of survival data is the presence of censoring which
is a partial observation ...
Gradient and likelihood ratio tests in cure rate models
(Canadian Center of Science and Education, 2016-06-11)
Local power of some tests in exponential family nonlinear models
(ELSEVIER SCIENCE BV, 2011)
In this paper we obtain asymptotic expansions up to order n(-1/2) for the nonnull distribution functions of the likelihood ratio, Wald, score and gradient test statistics in exponential family nonlinear models (Cordeiro ...
Size and power properties of some tests in the Birnbaum-Saunders regression model
(ELSEVIER SCIENCE BV, 2011)
The Birnbaum-Saunders distribution has been used quite effectively to model times to failure for materials subject to fatigue and for modeling lifetime data. In this paper we obtain asymptotic expansions, up to order n(-1/2) ...
Métodos de gradiente para otimização simultânea: estudo de casos de sistemas alimentares
(Campo Mourao, 2005-07)
The objective of this work was to develop a software with efficient gradient methods for foods systems multiresponse optimization using the Derringer & Suich function, including a 4th order polynomial equation
to remove ...
Local power properties of some asymptotic tests in symmetric linear regression models
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
In this paper we obtain asymptotic expansions, up to order n(-1/2) and under a sequence of Pitman alternatives, for the nonnull distribution functions of the likelihood ratio, Wald, score and gradient test statistics in ...