ListarDepartament: Matemàtiques por tema "multidimensional scaling"

Mostrando ítems 1-4 de 4

    • openAccess   Archetypal analysis with missing data: see all samples by looking at a few based on extreme profiles 

      Epifanio, Irene; Ibáñez Gual, Maria Victoria; Simó, Amelia American Statistical Association (2019-05-13)
      In this paper we propose several methodologies for handling missing or incomplete data in Archetype analysis (AA) and Archetypoid analysis (ADA). AA seeks to find archetypes, which are convex combinations of data points, ...

    • closedAccess   Classification of Events Using Local Pair Correlation Functions for Spatial Point Patterns 

      González, Jonatan A.; Rodríguez-Cortés, Francisco Javier; Romano, Elvira; Mateu, Jorge American Statistical Association (2021-05-12)
      Spatial point pattern analysis usually concerns identifying features in an observation window where there is also noise. This identification traditionally begins with studying the second-order properties of the point ...

    • closedAccess   Features detection in spatial point processes via multivariate techniques 

      Mateu, Jorge; Lorenzo, Gil; Porcu, Emilio John Wiley & Sons, Ltd. (2010)
      We consider the problem of detecting features of general shape in spatial point processes in the presence of substantial clutter. Our goal is to remove clutter from images where one or several features are present and have ...

    • openAccess   h-plots for displaying nonmetric dissimilarity matrices 

      Epifanio, Irene Wiley Periodicals (2013-01)
      Nonmetric pairwise data with violations of symmetry, reflexivity, or triangle inequality appear in fields such as image matching, web mining, or cognitive psychology. When data are inherently nonmetric, we should not enforce ...