Search Results - "Kopsinis, Yannis"

Deep Learning-Based Indoor Localization Using Multi-View BLE Signal by Koutris, Aristotelis, Siozos, Theodoros, Kopsinis, Yannis, Pikrakis, Aggelos, Merk, Timon, Mahlig, Matthias, Papaharalabos, Stylianos, Karlsson, Peter

“…In this paper, we present a novel Deep Neural Network-based indoor localization method that estimates the position of a Bluetooth Low Energy (BLE) transmitter…”
Get full text

Enhanced design matrix for task-related fMRI data analysis by Morante, Manuel, Kopsinis, Yannis, Chatzichristos, Christos, Protopapas, Athanassios, Theodoridis, Sergios

“…•A novel methodology to enhance the standard design matrix is proposed within the GLM framework for task-related fMRI data analysis.•The proposed methodology…”
Get full text

Information Assisted Dictionary Learning for fMRI Data Analysis by Morante, Manuel, Kopsinis, Yannis, Theodoridis, Sergios, Protopapas, Athanassios

“…In this paper, the task-related fMRI problem is treated in its matrix factorization form, focusing on the Dictionary Learning (DL) approach. The proposed…”
Get full text

Improved EMD Using Doubly-Iterative Sifting and High Order Spline Interpolation by Kopsinis, Yannis, McLaughlin, Steve

“…Empirical mode decomposition (EMD) is a signal analysis method which has received much attention lately due to its application in a number of fields. The main…”
Get full text

Compensation of Fiber Nonlinearities in Digital Coherent Systems Leveraging Long Short-Term Memory Neural Networks by Deligiannidis, Stavros, Bogris, Adonis, Mesaritakis, Charis, Kopsinis, Yannis

“…We introduce for the first time the utilization of Long short-term memory (LSTM) neural network architectures for the compensation of fiber nonlinearities in…”
Get full text

Online Sparse System Identification and Signal Reconstruction Using Projections Onto Weighted ℓ1 Balls by KOPSINIS, Yannis, SLAVAKIS, Konstantinos, THEODORIDIS, Sergios

Get full text

Robust Subspace Tracking With Missing Entries: The Set-Theoretic Approach by Chouvardas, Symeon, Kopsinis, Yannis, Theodoridis, Sergios

“…In this paper, an Adaptive Projected Subgradient Method (APSM) based algorithm for robust subspace tracking is introduced. A properly chosen cost function is…”
Get full text

An Anisotropic Sparse Adaptive Polynomial Chaos Method for the Uncertainty Quantification of Resonant Gratings-Performance by Papadopoulos, Aristeides D., Zygiridis, Theodoros, Kopsinis, Yannis, Glytsis, Elias N.

“…The stochastic response of resonant grating structures is studied, for a considerably large number of geometric random design variables. Computationally…”
Get full text

A Sparsity Promoting Adaptive Algorithm for Distributed Learning by Chouvardas, S., Slavakis, K., Kopsinis, Y., Theodoridis, S.

“…In this paper, a sparsity promoting adaptive algorithm for distributed learning in diffusion networks is developed. The algorithm follows the set-theoretic…”
Get full text

Development of EMD-Based Denoising Methods Inspired by Wavelet Thresholding by Kopsinis, Y., McLaughlin, S.

“…One of the tasks for which empirical mode decomposition (EMD) is potentially useful is nonparametric signal denoising, an area for which wavelet thresholding…”
Get full text

Investigation and Performance Enhancement of the Empirical Mode Decomposition Method Based on a Heuristic Search Optimization Approach by Kopsinis, Y., McLaughlin, S.

“…Empirical mode decomposition (EMD) is a relatively new, data-driven adaptive technique for analyzing multicomponent signals. Although it has many interesting…”
Get full text

Generalized Thresholding and Online Sparsity-Aware Learning in a Union of Subspaces by Slavakis, Konstantinos, Kopsinis, Yannis, Theodoridis, Sergios, McLaughlin, Stephen

“…This paper considers a sparse signal recovery task in time-varying (time-adaptive) environments. The contribution of the paper to sparsity-aware online…”
Get full text

A Sub-Sampling Approach for Data Acquisition in Gamma Ray Emission Tomography by Fysikopoulos, Eleftherios, Kopsinis, Yannis, Georgiou, Maria, Loudos, George

“…State of the art data acquisition systems for small animal imaging gamma ray detectors often rely on free running Analog to Digital Converters (ADCs) and high…”
Get full text

Online Sparse System Identification and Signal Reconstruction Using Projections Onto Weighted [ell] 1 Balls by Kopsinis, Yannis, Slavakis, Konstantinos, Theodoridis, Sergios

“…This paper presents a novel projection-based adaptive algorithm for sparse signal and system identification. The sequentially observed data are used to…”
Get full text

Online Sparse System Identification and Signal Reconstruction Using Projections Onto Weighted [Formula Omitted] Balls by Kopsinis, Yannis, Slavakis, Konstantinos, Theodoridis, Sergios

“…This paper presents a novel projection-based adaptive algorithm for sparse signal and system identification. The sequentially observed data are used to…”
Get full text

Online Sparse System Identification and Signal Reconstruction Using Projections Onto Weighted \ell Balls by Kopsinis, Yannis, Slavakis, Konstantinos, Theodoridis, Sergios

“…This paper presents a novel projection-based adaptive algorithm for sparse signal and system identification. The sequentially observed data are used to…”
Get full text

An online algorithm for distributed dictionary learning by Chouvardas, Symeon, Kopsinis, Yannis, Theodoridis, Sergios

“…This paper proposes a novel algorithm for online distributed dictionary learning, where a set of nodes is requested to collectively estimate a common…”
Get full text

Instantaneous frequency based spectral analysis of nuclear magnetic resonance spectroscopy data by Aboutanios, Elias, Kopsinis, Yannis, Rubtsov, Denis

“…Nuclear magnetic resonance spectroscopy signals are modelled as a sum of decaying complex exponentials in noise. The spectral analysis of these signals…”
Get full text

Iterative randomized robust linear regression by Kopsinis, Yannis, Chouvardas, Symeon, Theodoridis, Sergios

“…A promising approach when dealing with massive data sets is to apply randomized dimensionality reduction and then operate in lower dimensions. This paper deals…”
Get full text

Assisted dictionary learning for FMRI data analysis by Moreno, Manuel Morante, Kopsinis, Yannis, Kofidis, Eleftherios, Chatzichristos, Christos, Theodoridis, Sergios

“…Extracting information from functional magnetic resonance images (fMRI) has been a major area of research for more than two decades. The goal of this work is…”
Get full text