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Máquinas de vetores suporte com aplicação em classificação de crédito
(Universidade Federal de São Carlos, 2023-03-22)
The credit granting represents one of the products with the highest profitability within a financial institution. However, to ensure profit, institutions must know to whom they lend their capital. In this scenario, a ...
Análise de séries temporais multivariadas via Wavelet
(Universidade Federal de São Carlos, 2023-08-24)
After the mid-1980s, wavelet theory quickly spread to many fields. Although wavelet analysis has the ability to decompose data into various time scales and to deal with nonstationary data and time location, this methodology ...
Feminicídio antes e durante a pandemia
(Universidade Federal de São Carlos, 2023-08-24)
A lot of studies are done to know the effects of coronavirus pandemic in several society aspects, like colateral effects of the disease. One import social aspect is the violence against women wich many times leads to death. ...
Estratégias de reamostragem aplicadas em problemas de classificação binária de dados financeiros
(Universidade Federal de São Carlos, 2023-08-22)
Many binary classification problems exhibit unbalanced classes, which consists of one of the two classes being significantly more numerous than the other. The minority class is the least representative, with far fewer ...
Análise, seleção e agrupamento de características relevantes das equipes da NFL durante os anos de 2013-2016 e suas relações - um estudo de caso
(Universidade Federal de São Carlos, 2022-09-14)
On this work, the study of different NFL (National Football League) variables was proposed, with the main goal of analysing, selecting and clustering their characteristics and its correlations. Data on the official NFL ...
Inferência da conectividade neuronal e o modelo de Galves e Löcherbach
(Universidade Federal de São Carlos, 2022-09-16)
One of the most important issues in neuroscience is to understand the dynamics of animal behavior, that is, the joint action of large numbers of neurons, body parts, and the environment. The relationship between this ...
Modelo de regressão logı́stica com mistura de distribuições : estimadores de máxima verossimilhança e bayesiano utilizando o Stan
(Universidade Federal de São Carlos, 2024-02-02)
We explore the logist regression model, estimating its parameters through maximum likelihood and Bayesian estimators.
We use mixtures of distributions for 𝐾 = 1 and 2 components.
The Hamiltonian Monte Carlo implemented ...
Modelo de Séries Temporais Autorregressivo Periódico - PAR
(Universidade Federal de São Carlos, 2021-06-20)
This work presents the study of a type of time series model, called
of periodic autoregressive model, which emerged from the researches of Thomas and Fiering
(1962), according to Hipel and McLeod (1994). Its use is mainly ...
Um estudo sobre wavestrap
(Universidade Federal de São Carlos, 2021-06-30)
Wavelets are basis of function spaces that can be used to represent both continuous
(functions) and discrete (sequences) signals; wavelets study gained great notoriety after
the work of Daubechies, who developed a wavelet ...
Inferência da conectividade neuronal via estimação de medidas da teoria da informação
(Universidade Federal de São Carlos, 2021-06-08)
Information theory studies how communication systems integrate, encode, compute, and transmit information. The neural system is an example where communication takes place with neurons responding to stimuli and conducting ...