Now showing items 1-3 of 3

  • A characterization of the innovations of first order autoregressive models 

    Moriña, David; Puig, Pedro; Valero Baya, Jordi (2015-02-01)
    Article
    Restricted access - publisher's policy
    Suppose that follows a simple AR(1) model, that is, it can be expressed as , where is a white noise with mean equal to and variance . There are many examples in practice where these assumptions hold very well. Consider . ...
  • Goodness of fit tests for the skew-Laplace distribution 

    Puig, Pedro; Stephens, Michael A. (Institut d'Estadística de Catalunya, 2007)
    Article
    Open Access
    The skew-Laplace distribution is frequently used to fit the logarithm of particle sizes and it is also used in Economics, Engineering, Finance and Biology. We show the Anderson-Darling and Cram´ er-von Mises goodness of ...
  • What does a zero mean? understanding false, random and structural zeros in ecology 

    Blasco Moreno, Anabel; Pérez Casany, Marta; Puig, Pedro; Morante, Maria; Castells, Eva (2019-03-27)
    Article
    Restricted access - publisher's policy
    1. Zeros (i.e. events that do not happen) are the source of two common phenomena in count data: overdispersion and zero-inflation. Zeros have multiple origins in a dataset: false zeros occur due to errors in the experimental ...