• Article  

      A comparative simulation study of wavelet shrinkage estimators for Poisson counts 

      Besbeas, P.; De Feis, I.; Sapatinas, Theofanis (2004)
      Using computer simulations, the finite sample performance of a number of classical and Bayesian wavelet shrinkage estimators for Poisson counts is examined. For the purpose of comparison, a variety of intensity functions, ...
    • Article  

      Optimal testing for additivity in multiple nonparametric regression 

      Abramovich, F.; De Feis, I.; Sapatinas, Theofanis (2009)
      We consider the problem of testing for additivity in the standard multiple nonparametric regression model. We derive optimal (in the minimax sense) non- adaptive and adaptive hypothesis testing procedures for additivity ...
    • Article  

      Wavelet density estimation for weighted data 

      Cutillo, L.; De Feis, I.; Nikolaidou, C.; Sapatinas, Theofanis (2014)
      We consider the estimation of a density function on the basis of a random sample from a weighted distribution. We propose linear and nonlinear wavelet density estimators, and provide their asymptotic formulae for mean ...