Revista de Matemáticas 7(1 y 2)
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El análisis multivariado de datos como herramienta en la exploración de modelos en la comprensión de variables psicológicas
(2012-04-26)Psychology, as a behavioral science in a preparadigmathic state, needs the support of theoretical models that validate the constructs that it uses for explaining the phenomena it studies. For sustaining the advances in the ... -
La teoría de respuesta a los itemes: una moderna alternativa para el análisis psicométrico de instrumentos de medición
(2009-02-19)La Teoría de Respuesta a los Itemes, TRI, (o "Item Response Theory", en inglés) es un enfoque más poderoso que la Teoría Clásica de los Tests para el análisis de calidad técnica de instrumentos de medición psicométricos. ... -
Algunos aspectos teóricos de las funciones casi periódicas n-dimensionales
(2009-02-19)We five a definition of Almost Periodic Functions on Ñ N. Following that definition we show some topological properties for this functions. At the end of this paper we proof some algebraic properties by using the structure ... -
Análisis digital. Una nueva técnica para la representación de funciones acotadas que, en un intervalo finito, satisfacen las condiciones de Dirichlet
(2009-02-19)A new technique is introduced for the approximation of any bounded function f(t) that satisfies Dirichlet's conditions in a finite interval, with a precision as high as wanted. Such approximation in obtained by adding n ... -
Dynamics of a two-dimensional discrete-time SIS model
(2012-04-26)We analyze a two-dimensional discrete-time SIS model with a non-constant total population. Our goal is to determine the interaction between the total population, the susceptible class and the infective class, and the ... -
Spatial interpolation of dry deposition using EOF models
(2009-02-19)Random processes are monitored over space and time by a network of stations distributed across a spatial region. Auxiliary information is often gathered not only at the stations but at other points across the region. The ... -
A dichotomous property of the total variation of a process with independent increments
(2009-02-19)We establish a property for the total variation of a cad-lag process with independent increments wich is dichotomous in the sense that only two alternatives are possible. For this purpose we introduce the methods of ... -
Un algoritmo paralelo para el problema del conjunto independiente
(2009-02-19)Un conjunto S de vértices de una gráfica G es independiente si no existen dos vértices de S que sean adyacentes, esto es, la subgráfica de G inducida por S no tiene aristas. En este trabajo presentaremos un algoritmo ... -
Un algoritmo para el entrenamiento de máquinas de vector soporte para regresión
(2009-02-19)The aim of the present paper is twofold. Firstly an introduction to the ideas of Support Vector regression is given. then a new and simple algorithm, suggested by the work of Campbell y Cristianini in [16], is proposed ... -
Un problema de localización de plantas de gran escala
(2009-02-19)En este artículo se desarrolla un algoritmo heurístico y su correspondiente implementación para resolver un problema de localización de plantas (facility location) de gran escala, en donde surgen potencialmente más de 640 ... -
Grafos destinados al Análisis de datos Multivariante Condicionado por su Estructura
(2012-04-26)We present two new methods for the construction of graphs that can be used with descriptive techniques of Multivariate Data Analysis: a graph based in the chi-square distance and a graph based in strongly-connected components. ... -
Análisis de proximidades métrico usando búsqueda tabú
(2009-02-19)We apply tabu search (TS) in metric multidimensional scaling, obtaining good results comparable to those obtained with simulated annealing. A state in TS is a configuration of n points in a p dimensional space, and a ... -
Regresión y análisis factoriales
(2009-02-19)Some recent developments in factor analysis of multi-sets are introduced in this short course. The more usual factor analyses are based on the singular values de-composition. So, the analyses of two matrices here are ... -
Análisis factorial de correspondencias intraclases ponderado
(2009-02-19)En este artículo se presenta una técnica de Análisis Factorial útil para el estudio de tablas de datos en las que existe una partición sobre el conjunto de individuos, definida de forma natural. Dicha técnica permite poner ... -
Algoritmos para la clasificación piramidal simbólica
(2009-02-19)En este artículo se define el concepto de pirámide simbólica, además se presentan dos algoritmos para generar este tipo d pirámide a partir de una matriz de datos simbólicos. El primer algoritmo (CAPS) encuentra un "orden ... -
An Introduction to Symbolic data Analysis and its Application to the Sodas Project
(2012-04-12)The data descriptions of the units are called "symbolic" when they are more complex than the standard ones due to the fact that they contain internal variation and are structured. Symbolic data happen from many sources, ...
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