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Proposal of a new stability concept to detect changes in unsupervised data streams
(Pergamon-ElsevierOxford, 2014-11-15)
Learning from continuous streams of data has been receiving an increasingly attention in the last years. Among the many challenges related to mining data streams, change detection is one topic frequently addressed. Being ...
Testing for linear and nonlinear Gaussian processes in nonstationary time series
(World ScientificSingapore, 2015)
Surrogate data methods have been widely applied to produce synthetic data, while maintaining the same statistical properties as the original. By using such methods, one can analyze certain properties of time series. In ...
Algoritmo genético assistido por surrogate para avaliar e descobrir peptídeos contra o SARS-CoV-2Surrogate assisted genetic algorithm to evaluate and discover peptides against the SARS-CoV-2
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Ciência da Computação, 2022)
A column generation approach for the maximal covering location problem
(2007-01-01)
This article presents a column generation algorithm to calculate new improved lower bounds to the solution of maximal covering location problems formulated as a p-median problem. This reformulation leads to instances that ...
Using missing ordinal patterns to detect nonlinearity in time series data
(American Physical Society, 2017-08)
The number of missing ordinal patterns (NMP) is the number of ordinal patterns that do not appear in a series after it has been symbolized using the Bandt and Pompe methodology. In this paper, the NMP is demonstrated as a ...
Surrogate-based modeling and design optimization techniques for signal integrity in high-performance computer platforms
(World Scientific Publishing Europe, 2022)
Nonparametric estimation of a surrogate density function in infinite-dimensional spaces
(Taylor & Francis Ltd, 2012-06)
A density function is generally not well defined in functional data context, but we can define a surrogate of a probability density, also called pseudo-density, when the small ball probability can be approximated by the ...
Concentration methods for the quantification of coronavirus and other potentially pandemic enveloped virus from wastewater
Since the novel SARS-CoV-2 was detected in faeces, environmental researchers have been using centrifugal ultrafiltration, polyethylene glycol precipitation and aluminium hydroxide flocculation to describe its presence in ...