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Modelos de riscos competitivos no estudo de evasão discente
(Universidade Federal de São Carlos, 2020-02-11)
Dropout is a problem faced by public and private universities. Therefore, the motivation of
this work is to investigate the characteristics of students enrolled in a regular undergraduate
course and verify which one is ...
Distribuições discretas zero-modificadas para modelar dados de contagem zeros faltantes
(Universidade Federal de São Carlos, 2020-01-24)
The analysis of count data takes an important place in applied statistics, since many real problems are expressed in terms of counts. Frequently, count data sets have discrepancies in the frequency of the zero observation, ...
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 ...
Estudo comparativo de métodos de estimação do modelo de resposta gradual para dados de burnout em enfermeiras
(Universidade Federal de São Carlos, 2020-04-27)
The graded response model is an Item Response Theory (IRT) model where items admit a polytomous response widely known in the literature. The motivation for this study comes from a data set which belongs to the RN4CAST ...
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 ...