no code implementations • 21 Oct 2019 • Vassilis N. Ioannidis, Dimitris Berberidis, Georgios B. Giannakis
Alleviating this limitation, GraphSAC randomly draws subsets of nodes, and relies on graph-aware criteria to judiciously filter out sets contaminated by anomalous nodes, before employing a semi-supervised learning (SSL) module to estimate nominal label distributions per node.
1 code implementation • 27 Nov 2018 • Dimitris Berberidis, Georgios B. Giannakis
Moreover, an algorithmic scheme is proposed for training the model parameters effieciently and in an unsupervised manner.
no code implementations • 6 Apr 2018 • Donghoon Lee, Dimitris Berberidis, Georgios B. Giannakis
Key to success of RTI is to model accurately the shadowing effects as the bi-dimensional integral of the SLF scaled by a weight function, which is estimated using regularized regression.
Signal Processing Applications
no code implementations • 5 Apr 2018 • Dimitris Berberidis, Athanasios N. Nikolakopoulos, Georgios B. Giannakis
Diffusion-based classifiers such as those relying on the Personalized PageRank and the Heat kernel, enjoy remarkable classification accuracy at modest computational requirements.
no code implementations • 19 May 2017 • Dimitris Berberidis, Georgios B. Giannakis
Leveraging the graph for classification builds on the premise that labels across neighboring nodes are correlated according to a categorical Markov random field (MRF).
no code implementations • 28 Jan 2016 • Fatemeh Sheikholeslami, Dimitris Berberidis, Georgios B. Giannakis
Kernel-based methods enjoy powerful generalization capabilities in handling a variety of learning tasks.
no code implementations • 27 Jul 2015 • Dimitris Berberidis, Vassilis Kekatos, Georgios B. Giannakis
Linear regression is arguably the most prominent among statistical inference methods, popular both for its simplicity as well as its broad applicability.