• Article  

      Clustering of biological time series by cepstral coefficients based distances 

      Savvides, A.; Promponas, Vasilis J.; Fokianos, Konstantinos (2008)
      Clustering of stationary time series has become an important tool in many scientific applications, like medicine, finance, etc. Time series clustering methods are based on the calculation of suitable similarity measures ...
    • Article  

      On comparing several spectral densities 

      Fokianos, Konstantinos; Savvides, A. (2008)
      We investigated the problem of testing equality among spectral densities of several independent stationary processes. Our main methodological contribution is the introduction of a novel semiparametric log-linear model that ...