George A. Gravvanis

Orcid: 0000-0003-1562-3633

According to our database1, George A. Gravvanis authored at least 114 papers between 1992 and 2024.

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Bibliography

2024
Sparse Approximate Pseudoinverse Preconditioning for Sparse Supervised Learning Problems with More Features than Samples.
Int. J. Artif. Intell. Tools, June, 2024

2023
A generic sparse regression imputation method for time series and tabular data.
Knowl. Based Syst., November, 2023

Novel Sparse Feature Regression Method for Traffic Forecasting.
Int. J. Artif. Intell. Tools, February, 2023

2022
Rotation forest of random subspace models.
Intell. Decis. Technol., 2022

2021
An adaptive cluster-based sparse autoregressive model for large-scale multi-step traffic forecasting.
Expert Syst. Appl., 2021

Evaluation of self-organizing and self-managing heterogeneous high performance computing clouds through discrete-time simulation.
Concurr. Comput. Pract. Exp., 2021

On the Optimization of Self-Organization and Self-Management Hardware Resource Allocation for Heterogeneous Clouds.
Comput., 2021

2020
The Variability of the Reasons for Student Dropout in Distance Learning and the Prediction of Dropout-Prone Students.
Proceedings of the Machine Learning Paradigms - Advances in Learning Analytics, 2020

On the design of two-stage multiprojection methods for distributed memory systems.
J. Supercomput., 2020

A note on parallel approximate pseudoinverse matrix techniques for solving linear least squares problems.
J. Comput. Sci., 2020

Towards simulation and optimization of cache placement on large virtual content distribution networks.
J. Comput. Sci., 2020

Hybrid multi-projection method using sparse approximate inverses on GPU clusters.
Int. J. High Perform. Comput. Appl., 2020

An Efficient Method for Accelerating Training of Short-Term Traffic Prediction Models in Large-Scale Traffic Networks.
Proceedings of the PCI 2020: 24th Pan-Hellenic Conference on Informatics, 2020

Benchmark Comparison of Methods for Approximate Neighborhood Estimation of Road Segments in Large-Scale Traffic Networks.
Proceedings of the PCI 2020: 24th Pan-Hellenic Conference on Informatics, 2020

2019
Advanced Parametric Methods for Short-Term Traffic Forecasting in the Era of Big Data.
Proceedings of the Machine Learning Paradigms - Advances in Data Analytics, 2019

A parallel unified transform solver based on domain decomposition for solving linear elliptic PDEs.
J. Supercomput., 2019

Simulating large vCDN networks: A parallel approach.
Simul. Model. Pract. Theory, 2019

Distributed algebraic tearing and interconnecting techniques.
Numer. Algorithms, 2019

An iterative spatial-stepping numerical method for linear elliptic PDEs using the Unified Transform.
J. Comput. Appl. Math., 2019

Simulating Fog and Edge Computing Scenarios: An Overview and Research Challenges.
Future Internet, 2019

Analyzing resource distribution over a real-world large-scale virtual content infrastructure.
Proceedings of the 2019 IEEE Symposium on Computers and Communications, 2019

2018
Toward the design of a novel hybrid parallel N-body method in scope of modern cloud architectures.
J. Supercomput., 2018

Special section: towards high performance computing in the cloud.
J. Supercomput., 2018

Large-scale simulation of a self-organizing self-management cloud computing framework.
J. Supercomput., 2018

Parallel Schur Complement Techniques Based on Multiprojection Methods.
SIAM J. Sci. Comput., 2018

Forecasting students' success in an open university.
Int. J. Learn. Technol., 2018

Special Issue: Recent trends in cloud computing.
Future Gener. Comput. Syst., 2018

A framework for simulating large scale cloud infrastructures.
Future Gener. Comput. Syst., 2018

A Hybrid Method for Solving Inhomogeneous Elliptic PDEs Based on Fokas Method.
Comput. Methods Appl. Math., 2018

RECAP (Reliable Capacity Provisioning and Enhanced Remediation for Distributed Cloud Applications): The Simulation Approach.
Proceedings of the Advances in Service-Oriented and Cloud Computing, 2018

2017
A parallel Self Mesh-Adaptive N-body method based on approximate inverses.
J. Supercomput., 2017

Parallel multi-projection preconditioned methods based on semi-aggregation techniques.
J. Comput. Sci., 2017

Parallel Multi-Projection type methods on hybrid CPU/MIC cluster.
Proceedings of the 21st Pan-Hellenic Conference on Informatics, 2017

A comparative study of CPU power consumption models for cloud simulation frameworks.
Proceedings of the 21st Pan-Hellenic Conference on Informatics, 2017

On the numerical solution of Helmholtz-type PDEs using an adaptive complex collocation technique.
Proceedings of the 21st Pan-Hellenic Conference on Informatics, 2017

A Generic Framework Supporting Self-Organisation and Self-Management in Hierarchical Systems.
Proceedings of the 16th International Symposium on Parallel and Distributed Computing, 2017

On the power consumption modeling for the simulation of Heterogeneous HPC clouds.
Proceedings of the 1st International Workshop on Next generation of Cloud Architectures, 2017

CloudLightning Simulation and Evaluation Roadmap.
Proceedings of the 1st International Workshop on Next generation of Cloud Architectures, 2017

Predicting Student Performance in Distance Higher Education Using Active Learning.
Proceedings of the Engineering Applications of Neural Networks, 2017

2016
Parallel multilevel recursive approximate inverse techniques for solving general sparse linear systems.
J. Supercomput., 2016

Managing Spatial Graph Dependencies in Large Volumes of Traffic Data for Travel-Time Prediction.
IEEE Trans. Intell. Transp. Syst., 2016

On Issues Concerning Cloud Environments in Scope of Scalable Multi-Projection Methods.
Proceedings of the 18th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing, 2016

Characterization of hardware in self-managing self-organizing Cloud environment.
Proceedings of the 20th Pan-Hellenic Conference on Informatics, 2016

A note on the convergence rate of a class of Approximate Sparse Inverse Matrix Methods.
Proceedings of the 20th Pan-Hellenic Conference on Informatics, 2016


2015
Deflation techniques in conjunction with generic factored approximate sparse inverse preconditioning.
Proceedings of the 19th Panhellenic Conference on Informatics, 2015

On the numerical solution of the generalized dirichlet-neumann map for the 2D laplace equation using modified generic factored approximate sparse inverse preconditioning.
Proceedings of the 19th Panhellenic Conference on Informatics, 2015

2014
Distributed generic approximate sparse inverses.
J. Supercomput., 2014

Parallel multigrid algorithms based on generic approximate sparse inverses: an SMP approach.
J. Supercomput., 2014

An efficient method for computing the inverse of arrowhead matrices.
Appl. Math. Lett., 2014

On the numerical modeling of convection-diffusion problems by finite element multigrid preconditioning methods.
Adv. Eng. Softw., 2014

Higher Order Finite Difference Scheme for solving 3D Black-Scholes equation based on Generic Factored Approximate Sparse Inverse Preconditioning using Reordering Schemes.
Proceedings of the 18th Panhellenic Conference on Informatics, 2014

Geometric multigrid methods based on Generic Approximate Sparse Inverses.
Proceedings of the 18th Panhellenic Conference on Informatics, 2014

2013
Schur Complement Domain Decomposition in conjunction with Algebraic Multigrid methods based on Generic Approximate Inverses.
Proceedings of the 2013 Federated Conference on Computer Science and Information Systems, 2013

N-body simulation based on the Particle Mesh method using Multigrid schemes.
Proceedings of the 2013 Federated Conference on Computer Science and Information Systems, 2013

On numerical modeling performance of generalized preconditioned methods.
Proceedings of the Balkan Conference in Informatics, 2013

2012
Solving finite difference linear systems on GPUs: CUDA based Parallel Explicit Preconditioned Biconjugate Conjugate Gradient type Methods.
J. Supercomput., 2012

On the Algebraic Multigrid Method Based on Generic Approximate Banded Inverses.
Proceedings of the 16th Panhellenic Conference on Informatics, PCI 2012, 2012

On the Numerical Modeling and Solution of a Time Harmonic 3D Wave Equation by Explicit Approximate Inverse Preconditioning.
Proceedings of the 16th Panhellenic Conference on Informatics, PCI 2012, 2012

A Note on the Comparison of a Class of Preconditioned Iterative Methods.
Proceedings of the 16th Panhellenic Conference on Informatics, PCI 2012, 2012

2011
Special Issue on "Aspects of Numerical Algorithms, Parallelization and Applications".
J. Comput. Appl. Math., 2011

On the GPGPU parallelization issues of finite element approximate inverse preconditioning.
J. Comput. Appl. Math., 2011

An ontology-based mechanism for automatic categorization of web services.
Concurr. Comput. Pract. Exp., 2011

A Note on Parallel Finite Element Approximate Inverses Using OpenMP on Multicore Systems.
Proceedings of the 15th Panhellenic Conference on Informatics, 2011

Higher Order Finite Difference Preconditioned Scheme: A Multithreaded Approach.
Proceedings of the 15th Panhellenic Conference on Informatics, 2011

2010
Finite Element Approximate Inverse Preconditioning using POSIX threads on multicore systems.
Proceedings of the International Multiconference on Computer Science and Information Technology, 2010

2009
OpenMP based parallel normalized direct methods for sparse finite element linear systems.
J. Supercomput., 2009

Special Section: Defining the grid, experiences and future trends.
Future Gener. Comput. Syst., 2009

Optimal server resource reservation policies for priority classes of users under cyclic non-homogeneous markov modeling.
Eur. J. Oper. Res., 2009

2008
Java multithreading-based parallel approximate arrow-type inverses.
Concurr. Comput. Pract. Exp., 2008

High performance finite element approximate inverse preconditioning.
Appl. Math. Comput., 2008

An Improved Parallel Algorithm for Computing Approximate Inverses by Reducing Synchronizations.
Proceedings of the 7th International Symposium on Parallel and Distributed Computing (ISPDC 2008), 2008

Parallel Approximate Finite Element Inverses on Symmetric Multiprocessor Systems.
Proceedings of the Computational Science, 2008

2007
Special issue on "Grid Technologies".
J. Supercomput., 2007

Matching high performance approximate inverse preconditioning to architectural platforms.
J. Supercomput., 2007

On the optimization of free resources using non-homogeneous Markov chain software rejuvenation model.
Reliab. Eng. Syst. Saf., 2007

Special section: Grid technology and applications.
Future Gener. Comput. Syst., 2007

Software rejuvenation for resource optimization based on explicit approximate inverse preconditioning.
Appl. Math. Comput., 2007

On the performance of parallel approximate inverse preconditioning using Java multithreading techniques.
Appl. Math. Comput., 2007

On the Design of Parallel Finite Element Approximate Inverses.
Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 2007

Java Multithreading based Parallel Preconditioned Generalized Conjugate Gradient type methods.
Proceedings of the 6th International Symposium on Parallel and Distributed Computing (ISPDC 2007), 2007

2006
Special section: Parallel and distributed algorithms and systems.
Future Gener. Comput. Syst., 2006

On the performance of parallel normalized explicit preconditioned conjugate gradient type methods.
Proceedings of the 20th International Parallel and Distributed Processing Symposium (IPDPS 2006), 2006

Parallel Exact and Approximate Arrow-Type Inverses on Symmetric Multiprocessor Systems.
Proceedings of the Computational Science, 2006

2005
Parallel preconditioned conjugate gradient square method based on normalized approximate inverses.
Sci. Program., 2005

High Performance Computations Using Internet and Grid Technology.
Neural Parallel Sci. Comput., 2005

2004
Computing the Success Factors in Consistent Acquisition and Recognition of Objects in Color Digital Images by Explicit Preconditioning.
J. Supercomput., 2004

Guest Editorial.
J. Supercomput., 2004

Parallel and Systolic Solution of Normalized Explicit Approximate Inverse Preconditioning.
J. Supercomput., 2004

A Distributed Normalized Explicit Preconditioned Conjugate Gradient Method.
Parallel Algorithms Appl., 2004

The Journal of Parallel Algorithms and Applications: Special Issue on Parallel and Distributed Algorithms.
Parallel Algorithms Appl., 2004

Parallel Finite Element Approximate Inverse Preconditioning on Symmetric Multiprocessor Systems.
Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 2004

Normalized Isomorphic Preconditioned Methods for Solving Sparse Non-Linear Systems.
Proceedings of the International Conference on Modeling, 2004

Parallel Approximate Finite Element Inverse Preconditioning on Distributed Systems.
Proceedings of the 3rd International Symposium on Parallel and Distributed Computing (ISPDC 2004), 2004

Solving Non-linear Finite Difference Systems by Normalized Approximate Inverses.
Proceedings of the Computational and Information Science, First International Symposium, 2004

2003
On the Solution of Boundary Value Problems by Using Fast Generalized Approximate Inverse Banded Matrix Techniques.
J. Supercomput., 2003

Guest Editor's Editorial Computational Science and Scientific Computing.
J. Supercomput., 2003

A Two-Phase Cyclic Nonhomogeneous Markov Chain Performability Evaluation by Explicit Approximate Inverses Applied to a Replicated Database System.
J. Math. Model. Algorithms, 2003

Editorial - Special Issue: Computational Sciences and Applications.
J. Math. Model. Algorithms, 2003

Performability Evaluation of Multitasking and Multiprocessor Systems by Explicit Approximate Inverses.
Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 2003

2002
Solving Symmetric Arrowhead and Special Tridiagonal Linear Systems by Fast Approximate Inverse Preconditioning.
J. Math. Model. Algorithms, 2002

Domain Decomposition?CFinite Difference Approximate Inverse Preconditioned Schemes for Solving Fourth-Order Equations.
J. Math. Model. Algorithms, 2002

Performability Evaluation of a Replicated Database System by Explicit Approximate Inverses.
Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 2002

A Normalized Explicit Preconditioned Conjugate Gradient Method for Solving Sparse Non-linear Systems.
Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 2002

2001
The convergence rate and complexity of explicit preconditioned conjugate gradient methods based on approximate inverse banded matrix techniques.
Neural Parallel Sci. Comput., 2001

A fast explicit preconditioned finite element scheme.
Neural Parallel Sci. Comput., 2001

2000
Explicit isomorphic iterative methods for solving arrow-type linear systems.
Int. J. Comput. Math., 2000

Domain Decomposition Approximate Inverse Preconditioning for Solving Fourth Order Equations.
Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications, 2000

1999
Generalized approximate inverse finite element matrix techniques.
Neural Parallel Sci. Comput., 1999

1998
An approximate inverse matrix technique for arrowhead matrices.
Int. J. Comput. Math., 1998

1996
The rate of convergence of explicit approximate inverse preconditioning.
Int. J. Comput. Math., 1996

1995
Explicit preconditioned methods for solving 3d boundary-value problems by approximate inverse finite element matrix techniques.
Int. J. Comput. Math., 1995

Explicit Preconditioned Iterative Methods for Solving Large Unsymmetric Finite Element Systems.
Computing, 1995

1992
ΜΕΛΕΤΗ ΥΠΟΛΟΓΙΣΤΙΚΩΝ ΜΕΘΟΔΩΝ ΓΙΑ ΤΗΝ ΑΡΙΘΜΗΤΙΚΗ ΕΠΙΛΥΣΗ ΕΛΛΕΙΠΤΙΚΩΝ ΚΑΙ ΠΑΡΑΒΟΛΙΚΩΝ ΔΙΑΦΟΡΙΚΩΝ ΕΞΙΣΩΣΕΩΝ ΜΕ ΔΥΟ ΚΑΙ ΤΡΕΙΣ ΧΩΡΟΜΕΤΑΒΛΗΤΕΣ
PhD thesis, 1992


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