Efstratios Gallopoulos

According to our database, Efstratios Gallopoulos authored at least 67 papers between 1983 and 2023.

Collaborative distances:

• Dijkstra number of two.
• Erdős number of four.

2023

Hierarchical dynamic workload scheduling on heterogeneous clusters for grid search of inverse problems.

Christos Kyriakopoulos, Efstratios Gallopoulos, Ioannis E. Venetis

J. Supercomput., October, 2023

2022

pylspack: Parallel Algorithms and Data Structures for Sketching, Column Subset Selection, Regression, and Leverage Scores.

Aleksandros Sobczyk, Efstratios Gallopoulos

ACM Trans. Math. Softw., December, 2022

2021

Estimating Leverage Scores via Rank Revealing Methods and Randomization.

Aleksandros Sobczyk, Efstratios Gallopoulos

SIAM J. Matrix Anal. Appl., 2021

2019

EigenRec: generalizing PureSVD for effective and efficient top-N recommendations.

Athanasios N. Nikolakopoulos, Vassilis Kalantzis, Efstratios Gallopoulos, John D. Garofalakis

Knowl. Inf. Syst., 2019

TMG-BoBI: Generating Back-of-the-Book Indexes with the Text-to-Matrix-Generator.

Theoni Koutropoulou, Efstratios Gallopoulos

Proceedings of the 10th International Conference on Information, 2019

2018

A scalable iterative dense linear system solver for multiple right-hand sides in data analytics.

Vassilis Kalantzis, A. Cristiano I. Malossi, Costas Bekas, Alessandro Curioni, Efstratios Gallopoulos, Yousef Saad

Parallel Comput., 2018

ICALP 2019 - First Call for Papers.

Efstratios Gallopoulos, John D. Garofalakis, Christos Kaklamanis, Sotiris E. Nikoletseas, Christos D. Zaroliagis

Bull. EATCS, 2018

2017

Factored Proximity Models for Top-N Recommendations.

Athanasios N. Nikolakopoulos, Vassilis Kalantzis, Efstratios Gallopoulos, John D. Garofalakis

Proceedings of the IEEE International Conference on Big Knowledge, 2017

2016

Estimating the trace of the matrix inverse by interpolating from the diagonal of an approximate inverse.

Lingfei Wu, Jesse Laeuchli, Vassilis Kalantzis, Andreas Stathopoulos, Efstratios Gallopoulos

J. Comput. Phys., 2016

2015

A direct tridiagonal solver based on Givens rotations for GPU architectures.

Ioannis E. Venetis, Alexandros Kouris, Alexandros Sobczyk, Efstratios Gallopoulos, Ahmed H. Sameh

Parallel Comput., 2015

A general tridiagonal solver for coprocessors: Adapting g-Spike for the Intel Xeon Phi.

Ioannis E. Venetis, Alexandros Sobczyk, Alexandros Kouris, Alexandros Nakos, Nikolaos Nikoloutsakos, Efstratios Gallopoulos

Proceedings of the Parallel Computing: On the Road to Exascale, 2015

2014

Surfing the Network for Ranking by Multidamping.

Giorgios Kollias, Efstratios Gallopoulos, Ananth Grama

IEEE Trans. Knowl. Data Eng., 2014

2013

Accelerating data uncertainty quantification by solving linear systems with multiple right-hand sides.

Vassilis Kalantzis, Constantine Bekas, Alessandro Curioni, Efstratios Gallopoulos

Numer. Algorithms, 2013

Onomatology and content analysis of ergodic literature.

Eugenia-Maria Kontopoulou, Maria Predari, Efstratios Gallopoulos

Proceedings of the 3rd Narrative and Hypertext Workshop, 2013

2012

Graph and matrix metrics to analyze ergodic literature for children.

Eugenia-Maria Kontopoulou, Maria Predari, Thymios Kostakis, Efstratios Gallopoulos

Proceedings of the 23rd ACM Conference on Hypertext and Social Media, 2012

Topic 10: Parallel Numerical Algorithms.

Iain S. Duff, Efstratios Gallopoulos, Daniela di Serafino, Bora Uçar

Proceedings of the Euro-Par 2012 Parallel Processing - 18th International Conference, 2012

Parallel Numerical Computing from Illiac IV to Exascale - The Contributions of Ahmed H. Sameh.

Kyle A. Gallivan, Efstratios Gallopoulos, Ananth Grama, Bernard Philippe, Eric Polizzi, Yousef Saad, Faisal Saied, Danny C. Sorensen

Proceedings of the High-Performance Scientific Computing - Algorithms and Applications., 2012

2011

Rapid Elliptic Solvers.

Efstratios Gallopoulos

Proceedings of the Encyclopedia of Parallel Computing, 2011

2009

A versatile system for asynchronous iterations: From multithreaded simulations to Grid experiments.

Giorgios Kollias, Konstantinos Georgiou, Efstratios Gallopoulos

Proceedings of the Parallel Computing: From Multicores and GPU's to Petascale, 2009

2008

SVD based initialization: A head start for nonnegative matrix factorization.

Christos Boutsidis, Efstratios Gallopoulos

Pattern Recognit., 2008

Jylab Meets Eclipse: Integrating PSEs with Multicomponent Platforms.

Giorgios Kollias, Konstantinos Georgiou, Efstratios Gallopoulos

Proceedings of the Fourth International Conference on e-Science, 2008

2007

Machine Learning and Robust Data Mining.

Christophe Croux, Efstratios Gallopoulos, Stefan Van Aelst, Hongyuan Zha

Comput. Stat. Data Anal., 2007

Asynchronous Computation of PageRank computation in an interactive multithreading environment.

Giorgios Kollias, Efstratios Gallopoulos

Proceedings of the Web Information Retrieval and Linear Algebra Algorithms, 11.02., 2007

Multidamping simulation framework for link-based ranking.

Giorgios Kollias, Efstratios Gallopoulos

Proceedings of the Web Information Retrieval and Linear Algebra Algorithms, 11.02., 2007

Grid-Enabling a Problem Solving Environment: Implementation and Everyday Use.

Konstantinos Georgiou, Giorgios Kollias, Efstratios Gallopoulos

Proceedings of the Making Grids Work: Proceedings of the CoreGRID Workshop on Programming Models Grid and P2P System Architecture Grid Systems, 2007

2006

Oriented <i>k</i>-windows: A PCA driven clustering method.

Dimitris K. Tasoulis, Dimitrios Zeimpekis, Efstratios Gallopoulos, Michael N. Vrahatis

Proceedings of the Advances in Web Intelligence and Data Mining, 2006

Parallel Matrix Algorithms and Applications (PMAA'04).

Maurice Clint, Efstratios Gallopoulos, Esmond Ng, Jean Roman

Parallel Comput., 2006

Exploring term-document matrices from matrix models in text mining

Ioannis Antonellis, Efstratios Gallopoulos

CoRR, 2006

Linear and Non-Linear Dimensional Reduction via Class Representatives for Text Classification.

Dimitrios Zeimpekis, Efstratios Gallopoulos

Proceedings of the 6th IEEE International Conference on Data Mining (ICDM 2006), 2006

Topic 10: Parallel Numerical Algorithms.

Michel Cosnard, Hans-Joachim Bungartz, Efstratios Gallopoulos, Yousef Saad

Proceedings of the Euro-Par 2006, Parallel Processing, 12th International Euro-Par Conference, Dresden, Germany, August 28, 2006

Jylab: A System for Portable Scientific Computing over Distributed Platforms.

Giorgios Kollias, Efstratios Gallopoulos

Proceedings of the Second International Conference on e-Science and Grid Technologies (e-Science 2006), 2006

TMG: A MATLAB Toolbox for Generating Term-Document Matrices from Text Collections.

Dimitrios Zeimpekis, Efstratios Gallopoulos

Proceedings of the Grouping Multidimensional Data - Recent Advances in Clustering, 2006

2005

The design of a distributed MATLAB-based environment for computing pseudospectra.

Constantine Bekas, Effrosini Kokiopoulou, Efstratios Gallopoulos

Future Gener. Comput. Syst., 2005

CLSI: A Flexible Approximation Scheme from Clustered Term-Document Matrices.

Efstratios Gallopoulos, Dimitrios Zeimpekis

Proceedings of the 2005 SIAM International Conference on Data Mining, 2005

Asynchronous Iterative Computations with Web Information Retrieval Structures: The PageRank Case.

Giorgios Kollias, Efstratios Gallopoulos, Daniel B. Szyld

Proceedings of the Parallel Computing: Current & Future Issues of High-End Computing, 2005

2003

Parallel Matrix Algorithms and Applications (PMAA '02).

Peter Arbenz, Efstratios Gallopoulos, Bernard Philippe, Yousef Saad

Parallel Comput., 2003

2002

Parallel computation of pseudospectra by fast descent.

Constantine Bekas, Efstratios Gallopoulos

Parallel Comput., 2002

Parallel Computation of Pseudospectra Using Transfer Functions on a MATLAB-MPI Cluster Platform.

Constantine Bekas, Effrosini Kokiopoulou, Efstratios Gallopoulos, Valeria Simoncini

Proceedings of the Recent Advances in Parallel Virtual Machine and Message Passing Interface, 9th European PVM/MPI Users' Group Meeting, Linz, Austria, September 29, 2002

2001

Cobra: Parallel path following for computing the matrix pseudospectrum.

Constantine Bekas, Efstratios Gallopoulos

Parallel Comput., 2001

Towards the effective parallel computation of matrix pseudospectra.

Constantine Bekas, Effrosini Kokiopoulou, Ioannis Koutis, Efstratios Gallopoulos

Proceedings of the 15th international conference on Supercomputing, 2001

Topic 19: Problem Solving Environments.

David W. Walker, Kenneth A. Hawick, Domenico Laforenza, Efstratios Gallopoulos

Proceedings of the Euro-Par 2001: Parallel Processing, 2001

1996

3-D Land Avoidance and Load Balancing in Regional Ocean Simulation.

Luiz De Rose, Kyle A. Gallivan, Efstratios Gallopoulos

Proceedings of the 1996 International Conference on Parallel Processing, 1996

1995

An Iterative Method for Nonsymmetric Systems with Multiple Right-Hand Sides.

Valeria Simoncini, Efstratios Gallopoulos

SIAM J. Sci. Comput., 1995

Parallel Computing Using the Prefix Problem (S. Lakshmivarahan and Sudarshan K. Dhall).

Efstratios Gallopoulos

SIAM Rev., 1995

Workshop on Problem-Solving Environments: Findings and Recommendations.

Efstratios Gallopoulos, Elias N. Houstis, John R. Rice

ACM Comput. Surv., 1995

A Parallel Iterative Method for Exponential Propagation.

Chuck Baldwin, Roland W. Freund, Efstratios Gallopoulos

Proceedings of the Seventh SIAM Conference on Parallel Processing for Scientific Computing, 1995

FALCON: A MATLAB Interactive Restructuring Compiler.

Luiz De Rose, Kyle A. Gallivan, Efstratios Gallopoulos, Bret A. Marsolf, David A. Padua

Proceedings of the Languages and Compilers for Parallel Computing, 1995

1994

A Quasi-Minimal Residual Variant of the Bi-CGSTAB Algorithm for Nonsymmetric Systems.

Tony F. Chan, Efstratios Gallopoulos, Valeria Simoncini, Tedd Szeto, Charles H. Tong

SIAM J. Sci. Comput., 1994

1993

Accuracy Control for Parallel Evaluation of Matrix Rational Functions.

Daniela Calvetti, Efstratios Gallopoulos, Lothar Reichel

Proceedings of the Sixth SIAM Conference on Parallel Processing for Scientific Computing, 1993

1992

Efficient Solution of Parabolic Equations by Krylov Approximation Methods.

Efstratios Gallopoulos, Yousef Saad

SIAM J. Sci. Comput., 1992

Experiments with an ocean circulation model on CEDAR.

Luiz De Rose, Kyle A. Gallivan, Efstratios Gallopoulos

Proceedings of the 6th international conference on Supercomputing, 1992

1991

Decomposing polynomial interpolation for systolic arrays.

Çetin Kaya Koç, Peter R. Cappello, Efstratios Gallopoulos

Int. J. Comput. Math., 1991

Parallel Ocean Circulation Modeling on Cedar.

Luiz De Rose, Kyle A. Gallivan, Efstratios Gallopoulos, Antonio Navarra

Proceedings of the Fifth SIAM Conference on Parallel Processing for Scientific Computing, 1991

1990

Systolic computation of interpolating polynomials.

Peter R. Cappello, Efstratios Gallopoulos, Çetin Kaya Koç

Computing, 1990

1989

A parallel block cyclic reduction algorithm for the fast solution of elliptic equations.

Efstratios Gallopoulos, Yousef Saad

Parallel Comput., 1989

Fast computation of divided differences and parallel hermite interpolation.

Ömer Egecioglu, Efstratios Gallopoulos, Çetin Kaya Koç

J. Complex., 1989

Some Fast Elliptic Solvers on Parallel Architectures and their Complexities.

Efstratios Gallopoulos, Yousef Saad

Int. J. High Speed Comput., 1989

Parallel Hermite interpolation: An algebraic approach.

Ömer Egecioglu, Efstratios Gallopoulos, Çetin Kaya Koç

Computing, 1989

Efficient Parallel Solutions of Parabolic Equations: Explicit Methods.

Yousef Saad, Efstratios Gallopoulos

Proceedings of the Fourth SIAM Conference on Parallel Processing for Scientific Computing, 1989

Efficient Parallel Solution of Parabolic Equations: Implicit Methods on the Cedar Multicluster.

Efstratios Gallopoulos, Yousef Saad

Proceedings of the Fourth SIAM Conference on Parallel Processing for Scientific Computing, 1989

Experiments with Elliptic Problem Solvers on the Cedar Multicluster.

G. Frank, Efstratios Gallopoulos, Ulrike Meier

Proceedings of the Fourth SIAM Conference on Parallel Processing for Scientific Computing, 1989

On the parallel solution of parabolic equations.

Efstratios Gallopoulos, Yousef Saad

Proceedings of the 3rd international conference on Supercomputing, 1989

1988

Boundary integral domain decomposition of hierarchical memory multiprocessors.

Efstratios Gallopoulos, D. Lee

Proceedings of the 2nd international conference on Supercomputing, 1988

1987

Parallel Rapid Elliptic Solvers.

Efstratios Gallopoulos, Yousef Saad

Proceedings of the Third SIAM Conference on Parallel Processing for Scientific Computing, 1987

Fast Laplace Solver by Boundary Integral Based Domain Decomposition Methods.

Efstratios Gallopoulos, D. Lee

Proceedings of the Third SIAM Conference on Parallel Processing for Scientific Computing, 1987

1985

Processor Arrays for Problems in Computational Physics (Parallel)

Efstratios Gallopoulos

PhD thesis, 1985

1983

Numerical Experiments with the Massively parallel Processor.

Efstratios Gallopoulos, S. D. McEwan

Proceedings of the International Conference on Parallel Processing, 1983