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    • A new approach to quantile regression 

      Ardalan, Arash; Mardani-Fard, H. A. (Maltepe Üniversitesi, 2009)
      In this paper, we present a new approach to the quantile regression context that combine classical quantile regression approach given by Koenker and Bassett (1978) which estimates quantiles by specialized linear programming ...
    • What are copulas? 

      Mardani-Fard, Heydar Ali; Ardalan, Arash (Maltepe Üniversitesi, 2009)
      A copula is, in fact, a multivariate distribution function with standard uniform margins. Sklar (1959) proved that for a d−variate distribution function F with univariate margins F1, . . . , Fd, there exists a d−copula, ...