169 citations · 818 across the 32 of their papers we have counts for
4 papers · 1 filter
Assisted Dictionary Learning for fMRI Data Analysis
Manuel Morante Moreno, Yannis Kopsinis, Eleftherios Kofidis +2
Extracting information from functional magnetic resonance (fMRI) images has been a major area of research for more than two decades. The goal of this work is to present a new metho…
Higher-Order Block Term Decomposition for Spatially Folded fMRI Data
Christos Chatzichristos, Eleftherios Kofidis, Giannis Kopsinis +1
The growing use of neuroimaging technologies generates a massive amount of biomedical data that exhibit high dimensionality. Tensor-based analysis of brain imaging data has been pr…
Efficient KLMS and KRLS Algorithms: A Random Fourier Feature Perspective
Pantelis Bouboulis, Spyridon Pougkakiotis, Sergios Theodoridis
We present a new framework for online Least Squares algorithms for nonlinear modeling in RKH spaces (RKHS). Instead of implicitly mapping the data to a RKHS (e.g., kernel trick), w…
Robust Non-linear Regression: A Greedy Approach Employing Kernels with Application to Image Denoising
George Papageorgiou, Pantelis Bouboulis, Sergios Theodoridis
We consider the task of robust non-linear regression in the presence of both inlier noise and outliers. Assuming that the unknown non-linear function belongs to a Reproducing Kerne…