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Modelos de sobrevivência bivariados baseados na cópula PVF
(Universidade Federal de São Carlos, 2020-03-13)
An alternative developed to study associations among multivariate survival times is the use of
models based on copula functions.
In this work, we use the survival model derived from the PVF copula, based on the Power
Variance ...
Avaliação da proficiência em inglês acadêmico através de um teste adaptativo informatizado
(Universidade Federal de São Carlos, 2015-04-09)
This work describes the steps for converting a linear paper-and-pencil English proficiency test
for academic purposes, composed with multiple choice items that are administered following the
admissible probability ...
Comparing two populations using Bayesian Fourier series density estimation
(Universidade Federal de São Carlos, 2017-04-12)
Given two samples from two populations, one could ask how similar the populations are, that is,
how close their probability distributions are. For absolutely continuous distributions, one way
to measure the proximity of ...
Percolação Acessível
(Universidade Federal de São Carlos, 2020-02-17)
We consider the accessibility percolation model on the n-ary tree height the _nite
h. The model is de_ned by associating a continuous random variable X_v for each vertex
v in the tree. The main issue to consider and ...
Vector representation of texts applied to prediction models
(Universidade Federal de São Carlos, 2020-03-09)
Natural Language Processing has gone through substantial changes over time. It was only recently that statistical approaches started receiving attention. The Word2Vec model is one of these. It is a shallow neural network ...
Modelos de sobrevivência induzidos por fragilidade discreta série de potência zero-modificada
(Universidade Federal de São Carlos, 2020-03-13)
Survival models with a frailty term are presented as an extension of Cox's proportional risk model (COX, 1972), in which a random effect, called frailty, is introduced in the risk function in a multiplicative way with the ...
Decomposição da variância para o modelo de regressão destrutivo Waring de longa duração
(Universidade Federal de São Carlos, 2020-04-17)
The goal of this work is to formulate a two-stage regression long-term model, whose destructive mechanism of the competitive risk factors is flexible for measuring the impact on the survival function or cure rate of ...
Modelagem de dados de sistemas reparáveis com fragilidade
(Universidade Federal de São Carlos, 2015-09-15)
The usual models in repairable systems are minimal, perfect and imperfect repair, and, in the literature, the minimum repair model is the most explored. In repairable systems it is common that the same type of components ...
Hedging no modelo com processo de Poisson composto
(Universidade Federal de São Carlos, 2015-12-07)
The investor, that negotiate assets, is subject to economic risks of any negotiation because there is no certainty regarding the appreciation or depreciation of an asset. Here comes the futures market, where contracts can ...
O corte do FBST em modelos de alta dimensionalidade
(Universidade Federal de São Carlos, 2018-12-03)
The problem of controlling the significance level of the FBST (Full Bayesian Significant Test) test
is studied in the context of Bayesian models for density, thus, a Bayesian method is shown that
works with density ...