Rafael Izbicki | PhD
Rafael Izbicki | PhD
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Schrödinger's phenotypes: herbarium specimens show two-dimensional images are both good and (not so) bad sources of morphological data
L. M. Borges
,
V. C. Reis
,
Rafael Izbicki
January, 2020
Methods in Ecology and Evolution
PDF
Combinando métodos de aprendizado supervisionado para a melhoria da previsão do redshift de galáxia
M. Musetti
,
Rafael Izbicki
January, 2020
TEMA – Tendências em Matemática Aplicada e Computacional
PDF
Pragmatic hypotheses in the evolution of Science
This paper introduces pragmatic hypotheses and relates this concept to the spiral of scientific evolution. Previous works determined a …
Luís G. Esteves
,
Rafael Izbicki
,
Julio M. Stern
,
Rafael B. Stern
September, 2019
In
Entropy
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Code
DOI
Quantification under prior probability shift: the ratio estimator and its extensions
The quantification problem consists of determining the prevalence of a given label in a target population. However, one often has access to the labels in a sample from the training population but not in the target population. A common assumption in this situation is that of prior probability shift, that is, once the labels are known, the distribution of the features is the same in the training and target populations. In this paper, we derive a new lower bound for the risk of the quantification problem under the prior shift assumption. Using a weaker version of the prior shift assumption, which can be tested, we show that ratio estimators can be used to build confidence intervals for the quantification problem.
Afonso F. Vaz
,
Rafael Izbicki
,
Rafael B. Stern
May, 2019
Journal of Machine Learning Research
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Machine learning para análises preditivas em saúde: exemplo de aplicação para predizer óbito em idosos de São Paulo
H. G. dos Santos
,
C. F. do Nascimento
,
Rafael Izbicki
,
Y. A. de O. Duarte
,
A. D. P. Chiavegatto Filho
February, 2019
Caderno de Saúde Pública
Avian haemosporidians in the cattle egret (Bubulcus ibis) from central-western and southern Africa: high diversity and prevalence
Couto
,
Cumming
,
Congrains
,
Rafael Izbicki
,
Braga
,
Rocha
,
Moralez-Silva
,
Henry
,
Manu
,
Abalaka
,
Regalla
,
Silva
,
Diop
,
Lama
January, 2019
PLOS ONE
Comparing probabilistic predictive models applied to football
We propose two Bayesian multinomial-Dirichlet models to predict the final outcome of football (soccer) matches and compare them to …
M. A. Diniz
,
Rafael Izbicki
,
D. L. Lopes
,
L. E. B. Salasar
January, 2019
Journal of the Operational Research Society.
PDF
Comparing two populations using Bayesian Fourier series density estimation
M. H. de A. Inácio
,
Rafael Izbicki
,
L. E. B. Salasar
July, 2018
Communications in Statistics – Simulation and Computation.
PDF
Code
Considerations for monitoring population trends of colonial waterbirds using the effective number of breeders and census estimates
Detecting trends in population size fluctuations is a major focus in ecology, evolution, and conservation biology. Populations of …
F. M. da Silva
,
C. I. Niño
,
Rafael Izbicki
,
S. N. del. Lama"
April, 2018
Ecology and Evolution.
PDF
Hypertension is associated with frailty in older adults
The association between hypertension and frailty syndrome in older adults remains unclear. There is scarce information about the …
I. Aprahamian
,
E. Sassaki
,
M. Santos
,
Rafael Izbicki
,
R. C. Pulgrossi
,
M. Biella
,
A. C. Borges
,
M. Sassaki
,
L. Torres
,
I. Fernandez
,
O. Piao
,
P. Castro
,
P. Piao
,
M. S. Yassuda
January, 2018
The Journal of Clinical Hypertension.
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