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Now showing items 31-40 of 168
Análisis de algunas propiedades del método “local discontinuous galerkin”
(2006)
The numerical solutions of Partial Differential Equations calculated from a finite difference scheme or finite element scheme generally present errors in amplitude, due to dissipation, and errors in phase due to dispersion. ...
Algorithms for non-parametric classifiers in multi-relational data mining
(2006)
Over the last decades, due to the advances in information technologies, both the industrial and scientific communities have acquired large volumes of data in digital form. Most of these data sets are stored using relational ...
Rendimiento de los estudiantes del Recinto Universitario de Mayagüez en su primer curso de matemáticas : una aplicación de análisis multivariado
(2010-12)
We obtained data from 6,924 freshmen admitted to the University of Puerto Rico at Mayagüez since 2005 to 2007. For each one of these students we registered information about the following variables: Type of high school ...
The elliptic anisotropic problem with Wentzell boundary conditions and variable exponents
(2019-12-10)
Let $\Omega\subseteq\mathbb{R\!}^N$ be a bounded Lipschitz domain, for $N\geq3$. We investigate the solvability and regularity of a class of quasi-linear elliptic equations involving the anisotropic $\overset{\rightarrow ...
Implementación de una librería orientada a objeto para matrices esparcidas en paralelo
(2007)
Al buscar la solución matemática en muchos de los problemas científicos, se ven involucradas matrices de dimensiones altas y cuyos elementos distintos de cero son pocos comparados con el orden de la matriz, estas matrices ...
Métodos para encontrar intervalos de estimación para el problema on/off
(2014-06)
Considera los métodos para encontrar intervalos de estimación para alguno o varios parámetros, cuando hay parámetros de interés y parámetros de estorbo utilizados en modelos de probabilidad del problema on/off. Hacemos la ...
Comparación de algoritmos para clustering de "streams" de series de tiempo
(2012-05)
In recent years, technological advances have resulted in a huge increment in data production as in the evolution of methods that facilitated its collection. The data that arrive continuously and massively with infinite ...
Binning in the chi-square goodness-of-fit test
(2019-07-10)
One of the most commonly used goodness-of-fit tests is based on Pearson's chi-square statistic. Since this requires class intervals for the data, questions arise with respect to the method of estimation, types, and the ...
A comparison in cluster validation techniques
(2004)
Clustering may be defined as a process that aims to find partitions of similar objects. It is an unsupervised recognition procedure since there are no predefined classes that indicate grouping properties in the data set. ...
Efecto de casos anómalos en máquinas de vectores de soporte
(2009-03)
Support Vector Machines (SVM) is a new technique of classification that has received much attention in recent years. In many applications, the SVM has shown better performance than machine learning methods, and it has been ...