2015: Vol. 39, Núm. 1

Summary

  • Inference on the parameters of the Weibull distribution using records 

    Jafari, Ali Akbar; Zakerzadeh, Hojatollah (Institut d'Estadística de Catalunya, 2015-06)
    Article
    Open Access
    The Weibull distribution is a very applicable model for lifetime data. In this paper, we have investigated inference on the parameters of Weibull distribution based on record values. We first propose a simple and exact ...

  • Small area estimation of poverty indicators under partitioned area-level time models 

    Morales, Domingo; Pagliarella, Maria Chiara; Salvatore, Renato (Institut d'Estadística de Catalunya, 2015-06)
    Article
    Open Access
    This paper deals with small area estimation of poverty indicators. Small area estimators of these quantities are derived from partitioned time-dependent area-level linear mixed models. The introduced models are useful for ...

  • A new class of Skew-Normal-Cauchy Distribution 

    Arrué, Jaime; Gómez, Héctor W.; Salinas, Hugo S.; Bolfarine, Heleno (Institut d'Estadística de Catalunya, 2015-06)
    Article
    Open Access
    In this paper we study a new class of skew-Cauchy distributions inspired on the family extended two-piece skew normal distribution. The new family of distributions encompasses three well known families of distributions, ...

  • Diagnostic plot for the Identification of high leverage collinearity-influential observations 

    Bagheri, Arezoo; Midi, Habshah (Institut d'Estadística de Catalunya, 2015-06)
    Article
    Open Access
    High leverage collinearity influential observations are those high leverage points that change the multicollinearity pattern of a data. It is imperative to identify these points as they are responsible for misleading ...

  • Discrete alpha-skew-Laplace Distribution 

    Harandi, S. Shams; Alamatsaz, M. H. (Institut d'Estadística de Catalunya, 2015-06)
    Article
    Open Access
    Classical discrete distributions rarely support modelling data on the set of whole integers. In this paper, we shall introduce a flexible discrete distribution on this set, which can, in addition, cover bimodal as well as ...

  • A mathematical programming approach for different scenarios of bilateral bartering 

    Nasini, Stefano; Castro Pérez, Jordi; Fonseca, Pau (Institut d'Estadística de Catalunya, 2015-06)
    Article
    Open Access
    The analysis of markets with indivisible goods and fixed exogenous prices has played an important role in economic models, especially in relation to wage rigidity and unemployment. This paper provides a novel mathematical ...

  • A comparison of computational approaches for maximum likelihood estimation of the Dirichlet parameters on high-dimensional data 

    Giordan, Marco; Wehrens, Ron (Institut d'Estadística de Catalunya, 2015-06)
    Article
    Open Access
    Likelihood estimates of the Dirichlet distribution parameters can be obtained only through numerical algorithms. Such algorithms can provide estimates outside the correct range for the parameters and/or can require a large ...

  • The exponentiated discrete Weibull Distribution 

    Nekoukhou, Vahid; Bidram, Hamid (Institut d'Estadística de Catalunya, 2015-06)
    Article
    Open Access
    In this paper, the exponentiated discrete Weibull distribution is introduced. This new generalization of the discrete Weibull distribution can also be considered as a discrete analogue of the exponentiated Weibull distribution. ...