Search Results for author: Pantelis Bouboulis

Found 4 papers, 0 papers with code

Online Distributed Learning Over Networks in RKH Spaces Using Random Fourier Features

no code implementations23 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.

Efficient KLMS and KRLS Algorithms: A Random Fourier Feature Perspective

no code implementations12 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).

Robust Non-linear Regression: A Greedy Approach Employing Kernels with Application to Image Denoising

no code implementations4 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.

Image Denoising regression

Complex Support Vector Machines for Regression and Quaternary Classification

no code implementations9 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.

Classification General Classification +1

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