Athanasios P. Liavas

Publication Activity (10 Years)

Years Active: 1998-2022
Publications (10 Years): 15

Top Topics

Parallel Implementation

Alternating Optimization

Canonical Correlation Analysis

Tensor Factorization

Top Venues

IEEE Trans. Signal Process.

Publications

Paris A. Karakasis, Athanasios P. Liavas, Nicholas D. Sidiropoulos, Panagiotis G. Simos, Efrosini Papadaki
Multisubject Task-Related fMRI Data Processing via a Two-Stage Generalized Canonical Correlation Analysis. IEEE Trans. Image Process. 31 (2022)
Athanasios P. Liavas, Ioannis Marios Papagiannakos, Christos Kolomvakis
Nonnegative Tensor Completion: step-sizes for an accelerated variation of the stochastic gradient descent. EUSIPCO (2022)
Ioanna Siaminou, Athanasios P. Liavas
An Accelerated Stochastic Gradient for Canonical Polyadic Decomposition. EUSIPCO (2021)
Ioanna Siaminou, Athanasios P. Liavas
An Accelerated Stochastic Gradient for Canonical Polyadic Decomposition. CoRR (2021)
Ioanna Siaminou, Ioannis Marios Papagiannakos, Christos Kolomvakis, Athanasios P. Liavas
Accelerated Stochastic Gradient for Nonnegative Tensor Completion and Parallel Implementation. CoRR (2021)
Ioanna Siaminou, Ioannis Marios Papagiannakos, Christos Kolomvakis, Athanasios P. Liavas
Accelerated Stochastic Gradient for Nonnegative Tensor Completion and Parallel Implementation. EUSIPCO (2021)
Paris A. Karakasis, Athanasios P. Liavas, Nicholas D. Sidiropoulos, Panagiotis G. Simos, Efrosyni Papadaki
. EMBC (2020)
Paris A. Karakasis, Athanasios P. Liavas, Nicholas D. Sidiropoulos, Panagiotis G. Simos, Efrosyni Papadaki
Multi-subject Resting-State fMRI Data Analysis via Generalized Canonical Correlation Analysis. EUSIPCO (2020)
Alexios Balatsoukas-Stimming, Athanasios P. Liavas
Design of LDPC Codes for the Unequal Power Two-User Gaussian Multiple Access Channel. IEEE Wirel. Commun. Lett. 7 (5) (2018)
Georgios Lourakis, Athanasios P. Liavas
Nesterov-Based Alternating Optimization for Nonnegative Tensor Completion: Algorithm and Parallel Implementation. SPAWC (2018)
Athanasios P. Liavas, Georgios Kostoulas, Georgios Lourakis, Kejun Huang, Nicholas D. Sidiropoulos
Nesterov-Based Alternating Optimization for Nonnegative Tensor Factorization: Algorithm and Parallel Implementation. IEEE Trans. Signal Process. 66 (4) (2018)
Paris A. Karakasis, Athanasios P. Liavas
Alternating Optimization for Tensor Factorization with Orthogonality Constraints: Algorithm and Parallel Implementation. HPCS (2018)
Alexios Balatsoukas-Stimming, Athanasios P. Liavas
Design of LDPC Codes for the Unequal Power Two-User Gaussian Multiple Access Channel. CoRR (2017)
Athanasios P. Liavas, Georgios Kostoulas, Georgios Lourakis, Kejun Huang, Nicholas D. Sidiropoulos
Nesterov-based parallel algorithm for large-scale nonnegative tensor factorization. ICASSP (2017)
Kejun Huang, Nicholas D. Sidiropoulos, Athanasios P. Liavas
A Flexible and Efficient Algorithmic Framework for Constrained Matrix and Tensor Factorization. IEEE Trans. Signal Process. 64 (19) (2016)
Kejun Huang, Nicholas D. Sidiropoulos, Athanasios P. Liavas
A Flexible and Efficient Algorithmic Framework for Constrained Matrix and Tensor Factorization. CoRR (2015)
Athanasios P. Liavas, Nicholas D. Sidiropoulos
Parallel Algorithms for Constrained Tensor Factorization via Alternating Direction Method of Multipliers. IEEE Trans. Signal Process. 63 (20) (2015)
Kejun Huang, Nicholas D. Sidiropoulos, Athanasios P. Liavas
Efficient algorithms for 'universally' constrained matrix and tensor factorization. EUSIPCO (2015)
Athanasios P. Liavas, Nicholas D. Sidiropoulos
Parallel algorithms for large scale constrained tensor decomposition. ICASSP (2015)
Athanasios P. Liavas, Nicholas D. Sidiropoulos
Parallel Algorithms for Constrained Tensor Factorization via the Alternating Direction Method of Multipliers. CoRR (2014)
Athanasios P. Liavas, Despoina Tsipouridou
Single-Carrier Systems With MMSE Linear Equalizers: Performance Degradation due to Channel and CFO Estimation Errors. IEEE Trans. Signal Process. 60 (6) (2012)
Athanasios P. Liavas, Despoina Tsipouridou
Single-carrier systems with MMSE linear equalizers: Performance degradation due to channel and CFO estimation errors. ICASSP (2011)
George N. Karystinos, Athanasios P. Liavas
Efficient computation of the binary vector that maximizes a rank-deficient quadratic form. IEEE Trans. Inf. Theory 56 (7) (2010)
Despoina Tsipouridou, Athanasios P. Liavas
On the sensitivity of the MIMO Tomlinson-Harashima precoder with respect to channel uncertainties. IEEE Trans. Signal Process. 58 (4) (2010)
George N. Karystinos, Athanasios P. Liavas
Outage capacity of a cooperative scheme with binary input and a simple relay. ICASSP (2008)
Athanasios P. Liavas, George N. Karystinos
Outage capacity of a noncoherent cooperative protocol with binary input and a simple relay. ISWPC (2008)
Despoina Tsipouridou, Athanasios P. Liavas
On the Sensitivity of the Transmit MIMO Wiener Filter With Respect to Channel and Noise Second-Order Statistics Uncertainties. IEEE Trans. Signal Process. 56 (2) (2008)
George N. Karystinos, Athanasios P. Liavas
Quadratic form maximization over the binary field with polynomial complexity. ISIT (2008)
George N. Karystinos, Athanasios P. Liavas
Efficient computation of the binary vector that maximizes a rank-deficient quadratic form. ICASSP (2008)
Despoina Tsipouridou, Athanasios P. Liavas
On the Sensitivity of Transmit Wiener Filtering for Broadcast Channels with Respect to Channel Estimation Errors. ICASSP (3) (2007)
Athanasios P. Liavas, Despoina Tsipouridou
On the Performance of the Mismatched MMSE and the LS Linear Equalizers. IEEE Trans. Signal Process. 55 (7-1) (2007)
Athanasios P. Liavas
On the Sensitivity of a Suboptimal Precoding Scheme for Frequency-Selective Block-Based Channels With Respect to Channel Inaccuracies. IEEE Trans. Inf. Theory 51 (9) (2005)
Athanasios P. Liavas
Sensitivity analysis of a suboptimal precoding scheme for block channels with respect to channel inaccuracies. ICASSP (3) (2005)
Athanasios P. Liavas
Tomlinson-Harashima precoding with partial channel knowledge. IEEE Trans. Commun. 53 (1) (2005)
Athanasios P. Liavas
On the robustness of the finite-length MMSE-DFE with respect to channel and second-order statistics estimation errors. IEEE Trans. Signal Process. 50 (11) (2002)
A. D. Beikos, Athanasios P. Liavas
Performance analysis and comparison of blind to non-blind least-squares equalization with respect to effective channel overmodeling. Signal Process. 82 (9) (2002)
Athanasios P. Liavas
Robustness of the finite-length MMSE-DFE with respect to channel and second-order statistics estimation errors. EUSIPCO (2002)
Athanasios P. Liavas, Phillip A. Regalia
On the behavior of information theoretic criteria for model order selection. IEEE Trans. Signal Process. 49 (8) (2001)
Costas Papaloukas, Dimitrios I. Fotiadis, Aristidis Likas, Athanasios P. Liavas, Lampros K. Michalis
A robust knowledge-based technique for ischemia detection in noisy ECGs. KES (2000)
Athanasios P. Liavas, Phillip A. Regalia, Jean Pierre Delmas
On the robustness of the linear prediction method for blind channel identification with respect to effective channel undermodeling/overmodeling. IEEE Trans. Signal Process. 48 (5) (2000)
Athanasios P. Liavas
Least-squares channel equalization performance versus equalization delay. IEEE Trans. Signal Process. 48 (6) (2000)
Jean Pierre Delmas, Houcem Gazzah, Athanasios P. Liavas, Phillip A. Regalia
Statistical analysis of some second-order methods for blind channel identification/equalization with respect to channel undermodeling. IEEE Trans. Signal Process. 48 (7) (2000)
Athanasios P. Liavas, Phillip A. Regalia
On the numerical stability and accuracy of the conventional recursive least squares algorithm. IEEE Trans. Signal Process. 47 (1) (1999)
Athanasios P. Liavas, Phillip A. Regalia, Jean Pierre Delmas
Blind channel approximation: effective channel order determination. IEEE Trans. Signal Process. 47 (12) (1999)
Athanasios P. Liavas, Phillip A. Regalia, Jean Pierre Delmas
Robustness of least-squares and subspace methods for blind channel identification/equalization with respect to effective channel undermodeling/overmodeling. IEEE Trans. Signal Process. 47 (6) (1999)
Athanasios P. Liavas, Phillip A. Regalia, Jean Pierre Delmas
Robustness of least-squares and subspace methods for blind channel identification/equalization with respect to channel undermodeling. EUSIPCO (1998)
Athanasios P. Liavas, Phillip A. Regalia
Numerical stability issues of the conventional recursive least squares algorithm. ICASSP (1998)
Athanasios P. Liavas, Phillip A. Regalia
Acoustic echo cancellation: do IIR models offer better modeling capabilities than their FIR counterparts? IEEE Trans. Signal Process. 46 (9) (1998)