Now showing items 1-20 of 67

    • Estadística no paramétrica: pasado, presente y futuro 

      González Manteiga, Wenceslao; Crujeiras Casais, Rosa María (Sociedad de Estadística e Investigación Operativa, 2006)
      La estadística no paramétrica engloba una serie de técnicas de inferencia cuya característica principal es la ausencia de un modelo paramétrico de distribución subyacente. Sin pretender revisar todos y cada uno de ...
    • A nonparametric approach to the estimation of lengths and surface areas 

      Cuevas González, Antonio; Fraiman, Ricardo; Rodríguez Casal, Alberto (Institute of Mathematical Statistics, 2007)
      The Minkowski content L0(G) of a body G⊂ℝd represents the boundary length (for d=2) or the surface area (for d=3) of G. A method for estimating L0(G) is proposed. It relies on a nonparametric estimator based on the information ...
    • Statistics in biomedical research 

      Cadarso Suárez, Carmen María; González Manteiga, Wenceslao (Consejo Superior de Investigaciones Científicas (CSIC), 2007)
      La Bioestadística es hoy en día una componente científica fundamental de la investigación en Biomedicina, salud pública y servicios de salud. Las áreas tradicionales y emergentes de aplicación incluyen ensayos clínicos, ...
    • Testing for the equality of k regression curves 

      Pardo Fernández, Juan Carlos; Keilegom, Ingrid van; González Manteiga, Wenceslao (Academia Sinica, Institute of Statistical Science, 2007)
      Assume that (Xj , Yj ) are independent random vectors satisfying the nonparametric regression models Yj = mj (Xj ) + σj (Xj )εj , for j = 1, . . . , k, where mj (Xj ) = E(Yj |Xj ) and σ 2 j (Xj ) = Var (Yj |Xj ) are ...
    • Empirical likelihood based testing for regression 

      Keilegom, Ingrid van; Sánchez Sellero, César Andrés; González Manteiga, Wenceslao (The Institute of Mathematical StatisticsThe Bernoulli Society, 2008)
      Consider a random vector (X, Y ) and let m(x) = E(Y |X = x). We are interested in testing H0 : m ∈ MΘ,G = {γ(·, θ, g) : θ ∈ Θ, g ∈ G} for some known function γ, some compact set Θ ⊂ IRp and some function set G of real ...
    • Epidemiología de la enfermedad meningocócica en Cataluña antes y después de la vacunación frente al serogrupo C 

      Martínez, Ana I.; Domínguez García, Ángela; Oviedo de la Fuente, Manuel; Minguell i Vergés, Sofía; Jansà, Josep Maria; Codina Grau, Gemma; Vázquez Moreno, Julio A. (España. Ministerio de Sanidad, Consumo y Bienestar social, 2009)
      Fundamentos: La enfermedad meningocócica continúa siendo un grave problema de salud pública en todo el mundo. En Cataluña, tras implementar el programa de vacunación, ha habido un descenso importante de los casos ...
    • Evaluación del impacto de los programas de vacunación masiva: la experiencia de la hepatitis A en Cataluña 

      Oviedo de la Fuente, Manuel; Muñoz Gracia, María del Pilar; Domínguez García, Ángela; Carmona i Parcerisa, Glòria; Batalla Clavell, Joan; Borràs, Eva; Jansà, Josep Maria (España. Ministerio de Sanidad, Consumo y Bienestar social, 2009)
      Fundamento: El programa de vacunación de la hepatitis A + B en preadolescentes se introdujo en 1998 en Cataluña. Durante los siguientes años uno de los objetivos principales ha sido cuantificar la reducción en la ...
    • On the second order properties of the multidimensional periodogram for regularly spaced data 

      Porcu, Emilio; Crujeiras Casais, Rosa María; Mateu, Jorge; González Manteiga, Wenceslao (Society for Industrial and Applied Mathematics (SIAM), 2009)
      Recently there is growing interest in improving the level of knowledge of spatial and spatio-temporal processes using spectral techniques. The properties of the estimator of the spectral density, the periodogram, have been ...
    • Generating functions: a useful tool for computing power indices 

      Alonso Meijide, José María; Casas Méndez, Balbina (Sociedad de Estadística e Investigación Operativa, 2009)
      In the theory of simple games, the study of power indices plays an important role. One of the main di culties with these indices is that computation generally requires the sum of a very large number of terms. The generating ...
    • Las elecciones generales de 2008 y el juego del parlamento 

      Alonso Meijide, José María; Álvarez Mozos, Mikel (Federación Española de Profesores de Matemáticas, 2010)
      En este artículo analizamos el resultado de las elecciones generales desde un punto de vista Teórico de Juegos. Para cuantificar el poder que cada partido tiene en el nuevo Parlamento introducimos tres conceptos, los ...
    • Influence of socioeconomic status on community-acquired pneumonia outcomes in elderly patients requiring hospitalization: a multicenter observational study 

      Izquierdo, Conchita; Oviedo de la Fuente, Manuel; Ruiz, Laura; Sintes, Xavier; Vera, Isabel; Nebot, Manuel; Bayas, Jose María; Carratalà, Jordi; Varona, Wenceslao; Sousa, Dolores; Celorrio, Jose Miguel; Salleras, Luís; Domínguez García, Ángela; Working Group for the Study of the Prevention of CAP in the Elderly (BioMed Central, 2010)
      Background The associations between socioeconomic status and community-acquired pneumonia outcomes in adults have been studied although studies did not always document a relationship. The aim of this multicenter ...
    • DTDA: An R Package to Analyze Randomly Truncated Data 

      Moreira, Carla; Uña Álvarez, Jacobo de; Crujeiras Casais, Rosa María (Foundation for Open Access Statistics, 2010)
      In this paper, the R package DTDA for analyzing truncated data is described. This package contains tools for performing three different but related algorithms to compute the nonparametric maximum likelihood estimator of ...
    • Generalizing the Convex Hull of a Sample: The R Package alphahull 

      Rodríguez Casal, Alberto; Pateiro López, Beatriz (Foundation for Open Access Statistics, 2010-04-16)
      This paper presents the R package alphahull which implements the α-convex hull and the α-shape of a finite set of points in the plane. These geometric structures provide an informative overview of the shape and properties ...
    • An Equilibrium Bid Markup Strategy 

      Wang, Mingxi; Liu, Shulin; Wang, Shouyang; Coladas Uría, Luis (Convergence Information Society (CIS), 2012)
      Setting a bid markup strategy is a very difficult task. Nevertheless, it is important to construction firms or consulting engineering companies because the development of successful bidding strategies is a key factor to ...
    • Presmoothing in functional linear regression 

      Ferraty, Frédéric; González Manteiga, Wenceslao; Martínez Calvo, Adela; Vieu, Philippe (Academia Sinica, Institute of Statistical Science, 2012)
      In this paper, we consider the functional linear model with scalar response, and explanatory variable valued in a function space. In recent literature, functional principal components analysis (FPCA) has been used to ...
    • Statistical Computing in Functional Data Analysis: The R Package fda.usc 

      Febrero Bande, Manuel; Oviedo de la Fuente, Manuel (Foundation for Open Access Statistics, 2012)
      This paper is devoted to the R package fda.usc which includes some utilities for functional data analysis. This package carries out exploratory and descriptive analysis of functional data analyzing its most important ...
    • The impact of immigration and vaccination in reducing the incidence of hepatitis B in Catalonia (Spain) 

      Oviedo de la Fuente, Manuel; Muñoz Gracia, María del Pilar; Carmona i Parcerisa, Glòria; Borràs, Eva; Batalla Clavell, Joan; Soldevila, Nuria; Domínguez García, Ángela (BioMed Central, 2012)
      Background The Hepatitis B virus (HBV) infection is a major cause of liver disease and liver cancer worldwide according to the World Health Organization. Following acute HBV infection, 1-5% of infected healthy adults and ...
    • Exact risk improvement of bandwidth selectors for kernel density estimation with directional data 

      García Portugués, Eduardo (The Institute of Mathematical StatisticsThe Bernoulli Society, 2013)
      New bandwidth selectors for kernel density estimation with directional data are presented in this work. These selectors are based on asymptotic and exact error expressions for the kernel density estimator combined with ...
    • Allocation Rules for Games with Optimistic Aspirations 

      Carpente Rodríguez, María Luisa; Casas Méndez, Balbina; García Jurado, Ignacio; Nouweland, Anne van den (Hindawi, 2013)
      A game with optimistic aspirations specifies two values for each coalition of players: the first value is the worth that the players in the coalition can guarantee for themselves in the event that they coordinate their ...
    • Testing in generalized partially linear models: A robust approach 

      Boente Boente, Graciela; Cao Abad, Ricardo José; González Manteiga, Wenceslao; Rodríguez, Daniela (Elsevier, 2013)
      In this paper, we introduce a family of robust statistics which allow to decide between a parametric model and a semiparametric one. More precisely, under a generalized partially linear model, i.e., when the observations ...





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