2014: Vol. 38, Núm. 1

Summary

  • Editor's Report 2014 

    Guillén, Montserrat (Institut d'Estadística de Catalunya, 2014-06-12)
    Article
    Open Access

  • Testing extreme value copulas to estimate the quantile 

    Bahraoui, Zuhair; Bolancé, Catalina; Pérez-Marín, Ana M. (Institut d'Estadística de Catalunya, 2014-06-12)
    Article
    Open Access
    We generalize the test proposed by Kojadinovic, Segers and Yan which is used for testing whether the data belongs to the family of extreme value copulas. We prove that the generalized test can be applied whatever the ...

  • Decision making in kidney paired donation programs with altruistic donors 

    Li, Yijiang; Song, Peter X.-K.; Leichtman, Alan B.; Rees, Michael A.; Kalbfleisch, John D. (Institut d'Estadística de Catalunya, 2014-06-12)
    Article
    Open Access
    In recent years, kidney paired donation has been extended to include living non-directed or altruistic donors, in which an altruistic donor donates to the candidate of an incompatible donor candidate pair with the understanding ...

  • Improving parametric Clarke and Wright algorithms by means of iterative empirically adjusted greedy heuristics 

    Corominas, Albert; García-Villoria, Alberto; Pastor Moreno, Rafael (Institut d'Estadística de Catalunya, 2014-06-12)
    Article
    Open Access
    Since Clarke and Wright proposed their well-known savings algorithm for solving the Capacitated Vehicle Routing Problem, several enhancements to the original savings formula have been recently proposed, in the form of ...

  • Time-Varying Market Beta: Does the estimation methodology matter? 

    Nieto, Belén; Orbe, Susan; Zarraga, Ainoha (Institut d'Estadística de Catalunya, 2014-06-12)
    Article
    Open Access
    This paper compares the performance of nine time-varying beta estimates taken from three different methodologies never previously compared: least-square estimators including nonparametric weights, GARCH-based estimators ...

  • Regression analysis using order statistics and their concomitants 

    Ziaei, Abdul Rasoul; Sheikhi, Ayyub; Amirzadeh, Vahid (Institut d'Estadística de Catalunya, 2014-06-12)
    Article
    Open Access
    In this work we derive the exact joint distribution of linear combinations of order statistics and linear combinations of their concomitants and some auxiliary variables in multivariate normal distribution. By extending ...

  • The asymptotic relative efficiency and the ratio of sample sizes when testing two different null hypotheses 

    Gómez, Guadalupe; Gómez-Mateu, Moisés (Institut d'Estadística de Catalunya, 2014-06-12)
    Article
    Open Access
    Composite endpoints, consisting of the union of two or more outcomes, are often used as the primary endpoint in time-to-event randomized clinical trials. Previously, Gómez and Lagakos provided a method to guide the decision ...