• closedAccess   Object oriented data analysis under spatial correlation 

      Mateu, Jorge WILEY-VCH (2014-09)
      This is a discussion of the following paper: “Overview of object oriented data analysis” by J. Steve Marron and Andre ́s M. Alonso.
    • openAccess   Off-Line Evaluation of Mobile-Centric Indoor Positioning Systems: The Experiences from the 2017 IPIN Competition 

      Torres-Sospedra, Joaquín; Jiménez, Antonio R.; Moreira, Adriano; Lungenstrass, Tomás; Lu, Wei-Chung; Knauth, Stefan; Mendoza-Silva, Germán Martín; Seco, Fernando; Perez-Navarro, Antoni; Nicolau, Maria João; Costa, António; Meneses, Filipe; Farina, Joaquín; Morales, Juan Pablo; Lu, Wen-Chen; Cheng, Ho-Ti; Yang, Shi-Shen; Fang, Shih-Hau; Chien, Ying-Ren; Tsao, Yu MDPI (2018)
      The development of indoor positioning solutions using smartphones is a growing activity with an enormous potential for everyday life and professional applications. The research activities on this topic concentrate on the ...
    • closedAccess   On a class of non-stationary, compactly supported spatial covariance functions 

      Mateu, Jorge; Fernández Avilés, Gema; Montero, J. M. Springer-Verlag (2013-02)
      Globally supported covariance functions are generally associated with dense covariance matrices, meaning severe numerical problems in solution feasibility. These problems can be alleviated by considering methods yielding ...
    • openAccess   On a Linear Functional Mixed Effect Model for Spatial Data 

      Nasirzadeh, Roya; Mateu, Jorge; Soltani, Ahmad Reza Iranian Statistical Society (2019-08-29)
      This paper introduces a functional mixed effect random model to model spatial data. In this model, the spatial locations form the index set, while the contributing effects to the response variable are set as a linear ...
    • openAccess   On closed subgroups of precompact groups 

      Hernández, Salvador; Remus, Dieter; Trigos, Javier De Gruyter (2022-09-28)
      It is a Theorem of W. W. Comfort and K. A. Ross that if G is a subgroup of a compact Abelian group, and S denotes those continuous homomorphisms from G to the one-dimensional torus, then the topology on G is the initial ...
    • openAccess   On convergent sequences in dual groups 

      Ferrer González, María Vicenta; Hernández, Salvador; Tkachenko, M. Real Academia de Ciencias Exactas, Físicas y Naturales (2020-01-16)
      We provide some characterizations of precompact abelian groups G whose dual group G∧ p endowed with the pointwise convergence topology on elements of G contains a nontrivial convergent sequence. In the special case of ...
    • openAccess   On hidden Markov models and cyclic strings for shape recognition 

      Palazón González, Vicente; Marzal Varó, Andrés; Vilar Torres, Juan Miguel Elsevier (2014)
      Shape descriptions and the corresponding matching techniques must be robust to noise and invariant to transformations for their use in recognition tasks. Most transformations are relatively easy to handle when contours ...
    • openAccess   On Hyperspectral Remote Sensing of Leaf Biophysical Constituents: Decoupling Vegetation Structure and Leaf Optics Using CHRIS–PROBA Data Over Crops in Barrax 

      Latorre Carmona, Pedro; Knyazikhin, Yuri; Alonso, Luis; Moreno, José F.; Pla, Filiberto; Yang, Yan IEEE (2014)
      Scattering from a leaf responds differently at different wavelengths to changes in leaf properties such as pigment concentrations, chemical constituents, internal structure, and leaf-surface properties. Radiation scattered ...
    • closedAccess   On kernel-based intensity estimation of spatial point patterns on linear networks 

      Moradi, Mehdi; Rodríguez-Cortés, Francisco Javier; Mateu, Jorge Taylor & Francis (2018-04)
      We propose an extension of Diggle’s nonparametric edge-corrected kernel-based intensity estimator to the case of events coming from an inhomogenous point pattern on a linear network. We analyze its statistical properties, ...
    • closedAccess   On measures of dissimilarity between point patterns: Classification based on prototypes and multidimensional scaling 

      Mateu, Jorge; Schoenberg, Frederic P.; Diez, David M.; González Monsalve, Jonatan Andrey; Lu, Weipeng Wiley (2015-03)
      This paper presents a collection of dissimilarity measures to describe and then classify spatial point patterns when multiple replicates of different types are available for analysis. In particular, we consider a range of ...
    • openAccess   On Metrics for Location-Aware Games 

      Rodríguez-Pupo, Luis E.; Casteleyn, Sven; Granell, Carlos MDPI (2017-09)
      Metrics are important and well-known tools to measure users’ behavior in games, and gameplay in general. Particularities of location-aware games—a class of games where the player’s location plays a central role-demand ...
    • closedAccess   On new families of anisotropic spatial log-Gaussian Cox processes 

      Nasirzadeh, Fariba; Shishebor, Zohreh; Mateu, Jorge Springer (2020)
      Cox processes are natural models for point process phenomena that are environmentally driven, but much less natural for phenomena driven primarily by interactions amongst the points. The class of log-Gaussian Cox processes ...
    • openAccess   On Some Statistical Properties of the Spatio-Temporal Product Density 

      Rodríguez-Berrio, Felipe; Rodríguez-Cortés, Francisco Javier; Mateu, Jorge; adelfio, giada Universidad Nacional de Colombia (2021)
      We present an extension of the non-parametric edge-corrected Ohser-type kernel estimator for the spatio-temporal product density function. We derive the mean and variance of the estimator and give a closed-form ...
    • closedAccess   On the characterization of parabolicity and hyperbolicity of submanifolds 

      Esteve Siscar, Antonio; Palmer Andreu, Vicente London Mathematical Society (2011-08)
      We give a set of sufficient and necessary conditions for parabolicity and hyperbolicity of a submanifold with controlled mean curvature in a Riemannian manifold with a pole and with sectional curvatures bounded from above ...
    • closedAccess   On the convergence of adaptive gPC for non-linear random difference equations: Theoretical analysis and some practical recommendations 

      Calatayud, Julia; Cortés, Juan Carlos; Jornet, Marc International Scientific Research Publications (2018-06-19)
      In this paper, the application of adaptive generalized polynomial chaos (gPC) to quantify the uncertainty for non-linear random difference equations is analyzed. It is proved in detail that, under certain assumptions, the ...
    • openAccess   On the Dynamic Time Warping of Cyclic Sequences for Shape Retrieval 

      Palazón González, Vicente; Marzal Varó, Andrés Elsevier (2012)
      In the last years, in shape retrieval, methods based on Dynamic Time Warping and sequences where each point of the contour is represented by elements of several dimensions have had a significant presence. In this approach ...
    • openAccess   On the effects of the fix geometric constraint in 2D profiles on the reusability of parametric 3D CAD models 

      González-Lluch, Carmen; Company, Pedro; Contero, Manuel; Pérez López, David; Dorribo Camba, Jorge Springer-Verlag (2018-06)
      In order to be reusable, history-based feature-based parametric CAD models must reliably allow for modifications while maintaining their original design intent. In this paper, we demonstrate that relations that fix the ...
    • openAccess   On the Integration of Model-Based Feature Information in Product Lifecycle Management Systems 

      Dorribo Camba, Jorge; Contero, Manuel; Company, Pedro; Pérez, David Elsevier (2017-12)
      As CAD models continue to become more critical information sources in the product’s lifecycle, it is necessary to develop efficient mechanisms to store, retrieve, and manage larger volumes of increasingly complex data. ...
    • closedAccess   On the performance of two clustering methods for spatial functional data 

      Romano, Elvira; Mateu, Jorge; Giraldo, Ramón Springer Verlag (2015-10)
      The performance of two clustering strategies for spatially correlated functional data based on the same measure of spatial dependence is examined and compared. In particular, the role of the spatial dependence computed by ...
    • openAccess   On the Role of Geometric Constraints to Support Design Intent Communication and Model Reusability 

      Company, Pedro; Naya, Ferrán; Contero, Manuel; Dorribo Camba, Jorge CAD Solutions (2020)
      The assurance of model quality in parametric CAD implies that designers must build models that facilitate reuse while retaining their design intent when modified. In this context, a suitable selection of geometric constraints ...