Browsing by Author "Delicado Useros, Pedro Francisco"

A dynamic model of the proteins that form the initial ironsulfur cluster biogenesis machinery in yeast mitochondria
Amela Abellán, Isaac; Delicado Useros, Pedro Francisco; Gómez, Antonio; Querol Murillo, Enrique; Cedano, J (201303)
Article
Restricted access  publisher's policyThe assembly of ironsulfur clusters (ISCs) in eukaryotes involves the protein Frataxin. Deficits in this protein have been associated with iron inside the mitochondria and impair ISC biogenesis as it is postulated to act ... 
Analysing musical performance through functional data analysis: rhythmic structure in Schumann's Träumerei
Almansa, J; Delicado Useros, Pedro Francisco (200901)
Article
Open AccessFunctional data analysis (FDA) is a relatively new branch of statistics devoted to describing and modelling data that are complete functions. Many relevant aspects of musical performance and perception can be understood ... 
Another look at principal curves and surfaces
Delicado Useros, Pedro Francisco (200103)
Article
Open AccessPrincipal curves have been defined as smooth curves passing through the “middle” of a multidimensional data set. They are nonlinear generalizations of the first principal component, a characterization of which is the basis ... 
Choosing the most relevant level sets for depicting a sample of densities
Delicado Useros, Pedro Francisco; Vieu, Philippe (20170901)
Article
Open AccessWhen exploring a sample composed with a set of bivariate density functions, the question of the visualisation of the data has to front with the choice of the relevant level set(s). The approach proposed in this paper ... 
Cokriging and multivariate kriging methods based on data of a functional random field
Giraldo, Ramon; Delicado Useros, Pedro Francisco; Mateu Mahiques, Jorge (20171223)
Article
Open AccessKriging and cokriging and their several related versions are techniques widely known and used in spatial data analysis. However, when the spatial data are functions a bridge between functional data analysis and geostatistics ... 
Confidence intervals for median survival time with recurrent event data
González Ruíz, Juan Ramón; Peña, Edesl A.; Delicado Useros, Pedro Francisco (201001)
Article
Restricted access  publisher's policySeveral methods of constructing confidence intervals for the median survival time of a recurrent event data are developed. One of them is based on asymptotic variances estimated using some transformations. Others are based ... 
Continuous timevarying kriging for spatial prediction of functional data: An environmental application
Giraldo, Ramón; Delicado Useros, Pedro Francisco; Mateu, Jorge (20080707)
Article
Open AccessSpatially correlated functional data is present in a wide range of environmental disciplines and, in this context, efficient prediction of curves is a key issue. We present an approach for spatial prediction based on the ... 
Databased decision rules about the convexity of the support of a distribution
Delicado Useros, Pedro Francisco; Hernández Huerta, Adolfo; Lugosi, Gabor (20140101)
Article
Open AccessGiven n independent, identically distributed random vectors in Rd, drawn from a common density f, one wishes to find out whether the support of f is convex or not. In this paper we describe a decision rule which decides ... 
Dimensionality reduction for samples of bivariate density level sets: an application to electoral results
Delicado Useros, Pedro Francisco (Springer, 2017)
Conference report
Open AccessA bivariate densities can be represented as a density level set containing a fixed amount of probability (0.75, for instance). Then a functional dataset where the observations are bivariate density functions can be analyzed ... 
Dimensionality reduction when data are density functions
Delicado Useros, Pedro Francisco (20110101)
Article
Restricted access  publisher's policyFunctional Data Analysis deals with samples where a whole function is observed for each individual. A relevant case of FDA is when the observed functions are density functions. Among the particular characteristics of ... 
Discussion of “Analysis of spatiotemporal mobile phone data: a case study in the metropolitan area of Milan” by Piercesare Secchi, Simone Vantini and Valeria Vitelli
Delicado Useros, Pedro Francisco (20150521)
Article
Open AccessThe paper under discussion is a very wellwritten and interesting piece of work by Secchi et al. (2015) dealing with spatiotemporal data on mobile phone use in the area of Milan. I congratulate the authors for such a ... 
Distancebased LISA maps for multivariate lattice data
Delicado Useros, Pedro Francisco; Broner, Sonia Judith (20081201)
Article
Open AccessIn the context of areal data (a particular case of data with spatial dependence) we propose an algorithm to define spatial clusters. Our proposal is based on distance between the characteristics observed in different ... 
Distancebased local linear regression for functional predictors
Boj, E; Delicado Useros, Pedro Francisco; Fortiana, Josep (201002)
Article
Restricted access  publisher's policyThe problem of nonparametrically predicting a scalar response variable from a functional predictor is considered. A sample of pairs (functional predictor and response) is observed. When predicting the response for a new ... 
DockAnalyse: an application for the analysis of proteinprotein interactions
Amela Abellán, Isaac; Delicado Useros, Pedro Francisco; Gómez, Antonio; Bonas, Silvia; Querol, Enric; Cedano, J (20101022)
Article
Open AccessIs it possible to identify what the best solution of a docking program is? The usual answer to this question is the highest score solution, but interactions between proteins are dynamic processes, and many times the ... 
Functional regression on remote sensing data in oceanography
Acar Denizli, Nihan; Delicado Useros, Pedro Francisco; Basarir, Gülay; Caballero de Frutos, Isabel (20180601)
Article
Open AccessThe aim of this study is to propose the use of a functional data analysis approach as an alternative to the classical statistical methods most commonly used in oceanography and water quality management. In particular we ... 
Geostatistics for functional data: an ordinary kriging approach
Giraldo, Ramón; Delicado Useros, Pedro Francisco; Mateu, Jorge (20070611)
Article
Open AccessWe present a methodology to perform spatial prediction when measured data are curves. In particular, we propose both an estimator of the spatial correlation and a functional kriging predictor. We adapt an optimization ... 
Global and local distancebased generalized linear models
Boj, Eva; Caballé, Adrià; Delicado Useros, Pedro Francisco; Esteve, Anna; Fortiana, Josep (201603)
Article
Open AccessThis paper introduces local distancebased generalized linear models. These models extend (weighted) distancebased linear models first to the generalized linear model framework. Then, a nonparametric version of these ... 
Local likelihood density estimation based on smooth truncation
Delicado Useros, Pedro Francisco (200606)
Article
Open AccessTwo existing density estimators based on local likelihood have properties that are comparable to those of local likelihood regression but they are much less used than their counterparts in regression. We consider ... 
Measuring nonlinear dependence for two random variables distributed along a curve
Delicado Useros, Pedro Francisco; Marcelo, Smrekar (200909)
Article
Open AccessWe propose new dependence measures for two real random variables not necessarily linearly related. Covariance and linear correlation are expressed in terms of principal components and are generalized for variables distributed ... 
Modelling functionvalued stochastic processes, with applications to fertility dynamics
Chen, Kehui; Delicado Useros, Pedro Francisco; Müller, HansGeorg (2017)
Article
Open AccessWe introduce a simple and interpretable model for functional data analysis for situations where the observations at each location are functional rather than scalar. This new approach is based on a tensor product representation ...