no code implementations • 23 Mar 2017 • Pantelis Bouboulis, Symeon Chouvardas, Sergios Theodoridis
To the best of our knowledge, this is the first time that a complete protocol for distributed online learning in RKHS is presented.
no code implementations • 12 Jun 2016 • Pantelis Bouboulis, Spyridon Pougkakiotis, Sergios Theodoridis
We present a new framework for online Least Squares algorithms for nonlinear modeling in RKH spaces (RKHS).
no code implementations • 4 Jan 2016 • George Papageorgiou, Pantelis Bouboulis, Sergios Theodoridis
Finally, the proposed robust estimation framework is applied to the task of image denoising, and its enhanced performance in the presence of outliers is demonstrated.
no code implementations • 9 Mar 2013 • Pantelis Bouboulis, Sergios Theodoridis, Charalampos Mavroforakis, Leoni Dalla
The method exploits the notion of widely linear estimation to model the input-out relation for complex-valued data and considers two cases: a) the complex data are split into their real and imaginary parts and a typical real kernel is employed to map the complex data to a complexified feature space and b) a pure complex kernel is used to directly map the data to the induced complex feature space.