Now showing items 126-145 of 319

    • Fitting non-gaussian Models to Financial data: An Empirical Study 

      Olivares, Pablo; Álvarez, Alexánder (2011-04-29)
      In this paper are presented some experiences about the modeling of financial data by three classes of models as alternative to Gaussian Linear models. Dynamic Volatility, Stable L'evy and Diffusion with Jumps models are ...
    • Formalización de una teoría de la mentalidad 

      Ulate Montero, Fernán (2009-02-20)
      We introduce a model based in Game Theory, and those used primarily in biology(evolutionary games) to understand history. We are interested in use the model tounderstand the last years of the colony of Costa Rica. We proved ...
    • Fourier coefficientes computation in two variables, a distributional version 

      Ulata R., Carlos Manuel (2015-01-01)
      The present article, by considering the distributional summations of Euler-Maclaurin and a suitable choice of the distribution, results in repre- sentations for the Fourier coefficients in two variables are obtained. These ...
    • Fórmulas aproximadas del tipo Lévy-Khintchine 

      Lobo Segura, Jaime (2009-02-19)
      The problem of approximation of the characteristic functions defined by a PII in near intervals is studied. We establish some general properties of these functions and of the associated complex matingales, which, with the ...
    • Funciones periódicas, cuasiperiódicas y clasificación de funciones 

      Castro Fernández, Edwin (2009-02-18)
      In this work we present some significative sets of functions. Following the ideas of [2] we introduce the almost periodic functions and its elementary properties. Based in [12] we give a clasification of the sets.
    • Funciones regulares en el plano y operadores de Nemytskii 

      Aziz, Wadie (2014-01-01)
      En este artículo mostramos que el espacio de las llamadas funciones regularizadas definidas sobre algún rectángulo del plano es un espacio de Banach. Más aún, bajo las hipótesis adecuadas damos condición necesaria ...
    • Fuzzy Regression VS. Ordinary Least Squares Regression: Case Study 

      de los Cobos Silva, Sergio Gerardo; Goddard Close, John; Gutiérrez Andrade, Miguel Ángel (2011-03-18)
      The objective of this paper is to disseminate the technique of fuzzy regression and to give a practical example of its use. To this end, classical regression is compared to several fuzzy regression models on a problem ...
    • Generación de métricas en análisis de datos 

      Bolaños Guerrero, Fabricio; Trejos Zelaya, Javier (2009-02-20)
      In this work we introduce primary generators of metrics, that consist of linearcombinations of known metrics. We establish some theoretical properties of these generators,related to the computation of principal components, ...
    • Generación de reglas estadísticas a partir de grandes bases de datos 

      Schektman, Yves; Trejos Zelaya, Javier; Troupé, Marylène (2009-02-18)
      Given a set of categorical variables, we want to predict one or more of them by the way rules. We propose an algorithm that (i) is guided by statistical results in a relational geometry where we use assymetrical association ...
    • Generadores de números primos y factorizadores de números compuestos 

      Bulat, Mijail; Leon, Dumitru; Bivol, Leon; Ciobanu, Iacob; Zgureanu, Aurel (2009-02-20)
      The sequence of natural numbers presents itself as a multidimensional array. Twoproblems are solved on the basis of these arrays:a) distribution of prime numbers in multidimensional array,b) factoring of composite numbers.For ...
    • General guidelines solution for linear programming with fuzzy coefficients 

      de los Cobos Silva, Sergio Gerardo; Terceño Gómez, Antonio; Gutiérrez Andrade, Miguel Ángel (2013-08-29)
      This work introduce to the Possibilistic Programming and the Fuzzy Programming as paradigms that allow to resolve problems of linear programming when the coefficients of the model or the restrictions on the same are presented ...
    • Generalización a Rn de algunos métodos de interpolación conocidos en ecuaciones diferenciales 

      Arguedas Troyo, Vernor; Mata Montero, Roberto (2009-02-18)
      We present the Runge-Kutta methods of several one-step levels in Rn , as well as algorithms in pseudo-code for the implicit and explicit methods. We study the problem of error control in Rn and we give numerical examples ...
    • Generalización de dos métodos de detección de conglomerados. Aplicaciones en bioinformática. 

      Rodríguez Corvea, Laureano; Casas Cardoso, Gladys M.; Grau Abalo, Ricardo; Pupo Meriño, Mario (2009-02-25)
      This paper presents a modification to the temporal disease clusters methods inorder to apply them to other sciences. Particular specifications are shown in Scanand temporal Grimson techniques. The original data are transformed ...
    • Generalization of Rakotch's fixed Point Theorem 

      Morales, José R. (2011-04-29)
      In this paper we get some generalizations of Rakotch's results [10] using the notion of $\omega ?distancia$ on a metric space

      González, José Alejandro; Cascone, Marcos Henrique (2014-07-01)
      Kullback-Leibler information allow us to characterize a family of dis- tributions denominated Kullback-Leibler-Symmetric, which are distance functions and, under some restrictions, generate the Jensen’s equality shown by ...
    • Geostatistical Spatio-Time model of crime in el Salvador: Structural and Predictive Analysis 

      Alvarado, Welman Rosa (2011-07-26)
      Today, to study a geospatial and spatio-temporal phenomena requires searching statistical tools that enable the analysis of the dependency of space, time and interactions. The science that studies this kind of subjects is ...
    • GNM-NIPALS: general nonmetric-nonlinear estimation by iterative partial least squares 

      Aluja, Tomás; González, Víctor Manuel (2014-04-03)
      This paper develops GNM-NIPALS as an extension of the NM-PLS methods, which allows to quantify the qualitative variables of mixed data, by means of the reconstitution function using the first k principal com- ponents, ...
    • Goal problems in gambling theory 

      Hill, Theodore (2009-02-18)
      A short introduction to goal problems in abstract gambling theory is given, along with statementes of some of the main theorems and a number of examples, open problems and references. Emphasis is on the finite-state, ...
    • Grafos destinados al Análisis de datos Multivariante Condicionado por su Estructura 

      García Montoya, Miguel Ángel; Zárraga Castro, Amaya; Castro Íñigo, Belén (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. ...
    • Graph dominance by rook domains for Znp and Zn3 × Zm2 graphs 

      Piza Volio, Eduardo (2009-02-20)
      Described within is the problem of finding near-minimum dominating subsets of agiven graph by rook domains. Specifically, we study the graphs of the kind ZnpandZn3×Zm2and introduce a simulated annealing algorithm to compute ...