George A. Gravvanis

ORCID

Publication Activity (10 Years)

Years Active: 1995-2023
Publications (10 Years): 42

Top Venues

J. Supercomput.

PCI

Panhellenic Conference on Informatics

J. Comput. Sci.

Publications

Athanasios I. Salamanis, George A. Gravvanis, Sotiris B. Kotsiantis, Michael N. Vrahatis
Novel Sparse Feature Regression Method for Traffic Forecasting. Int. J. Artif. Intell. Tools 32 (1) (2023)
Athanasios I. Salamanis, George A. Gravvanis, Sotiris Kotsiantis, Konstantinos M. Giannoutakis
A generic sparse regression imputation method for time series and tabular data. Knowl. Based Syst. 279 (2023)
Stamatios-Aggelos N. Alexandropoulos, Christos K. Aridas, Sotiris B. Kotsiantis, George A. Gravvanis, Michael N. Vrahatis
Rotation forest of random subspace models. Intell. Decis. Technol. 16 (2) (2022)
Athanasios I. Salamanis, Anastasia-Dimitra Lipitakis, George A. Gravvanis, Sotiris Kotsiantis, Dimosthenis Anagnostopoulos
An adaptive cluster-based sparse autoregressive model for large-scale multi-step traffic forecasting. Expert Syst. Appl. 180 (2021)
Konstantinos M. Giannoutakis, Christos K. Filelis-Papadopoulos, George A. Gravvanis, Dimitrios Tzovaras
On the Optimization of Self-Organization and Self-Management Hardware Resource Allocation for Heterogeneous Clouds. Comput. 10 (11) (2021)
Konstantinos M. Giannoutakis, Christos K. Filelis-Papadopoulos, George A. Gravvanis, Dimitrios Tzovaras
Evaluation of self-organizing and self-managing heterogeneous high performance computing clouds through discrete-time simulation. Concurr. Comput. Pract. Exp. 33 (17) (2021)
Anastasia-Dimitra Lipitakis, Christos K. Filelis-Papadopoulos, George A. Gravvanis, Dimosthenis Anagnostopoulos
A note on parallel approximate pseudoinverse matrix techniques for solving linear least squares problems. J. Comput. Sci. 41 (2020)
Byron E. Moutafis, George A. Gravvanis, Christos K. Filelis-Papadopoulos
Hybrid multi-projection method using sparse approximate inverses on GPU clusters. Int. J. High Perform. Comput. Appl. 34 (3) (2020)
Byron E. Moutafis, George A. Gravvanis, C. K. Filelis-Papadopoulos
On the design of two-stage multiprojection methods for distributed memory systems. J. Supercomput. 76 (11) (2020)
Athanasios I. Salamanis, George A. Gravvanis, Christos K. Filelis-Papadopoulos, Dimitrios Tzovaras
An Efficient Method for Accelerating Training of Short-Term Traffic Prediction Models in Large-Scale Traffic Networks. PCI (2020)
Athanasios I. Salamanis, George A. Gravvanis, Christos K. Filelis-Papadopoulos, Dimitrios Michail
Benchmark Comparison of Methods for Approximate Neighborhood Estimation of Road Segments in Large-Scale Traffic Networks. PCI (2020)
Christos K. Filelis-Papadopoulos, Patricia Takako Endo, Malika Bendechache, Sergej Svorobej, Konstantinos M. Giannoutakis, George A. Gravvanis, Dimitrios Tzovaras, James Byrne, Theo Lynn
Towards simulation and optimization of cache placement on large virtual content distribution networks. J. Comput. Sci. 39 (2020)
Christos K. Filelis-Papadopoulos, Konstantinos M. Giannoutakis, George A. Gravvanis, Patricia Takako Endo, Dimitrios Tzovaras, Sergej Svorobej, Theo Lynn
Simulating large vCDN networks: A parallel approach. Simul. Model. Pract. Theory 92 (2019)
N. A. Tselepidis, Christos K. Filelis-Papadopoulos, George A. Gravvanis
Distributed algebraic tearing and interconnecting techniques. Numer. Algorithms 82 (3) (2019)
Eleftherios-Nektarios G. Grylonakis, George A. Gravvanis, Christos K. Filelis-Papadopoulos, Athanassios S. Fokas
A parallel unified transform solver based on domain decomposition for solving linear elliptic PDEs. J. Supercomput. 75 (8) (2019)
Patricia Takako Endo, James Byrne, Theo Lynn, Radhika Loomba, Ruth Quinn, Christos K. Filelis-Papadopoulos, Konstantinos M. Giannoutakis, George A. Gravvanis, Dimitrios Tzovaras, Peter Willis, Sergej Svorobej
Analyzing resource distribution over a real-world large-scale virtual content infrastructure. ISCC (2019)
Sergej Svorobej, Patricia Takako Endo, Malika Bendechache, Christos K. Filelis-Papadopoulos, Konstantinos M. Giannoutakis, George A. Gravvanis, Dimitrios Tzovaras, James Byrne, Theo Lynn
Simulating Fog and Edge Computing Scenarios: An Overview and Research Challenges. Future Internet 11 (3) (2019)
Eleftherios-Nektarios G. Grylonakis, Christos K. Filelis-Papadopoulos, George A. Gravvanis, Athanassios S. Fokas
An iterative spatial-stepping numerical method for linear elliptic PDEs using the Unified Transform. J. Comput. Appl. Math. 352 (2019)
Christos K. Filelis-Papadopoulos, Konstantinos M. Giannoutakis, George A. Gravvanis, Dimitrios Tzovaras
Large-scale simulation of a self-organizing self-management cloud computing framework. J. Supercomput. 74 (2) (2018)
Eleftherios-Nektarios G. Grylonakis, Christos K. Filelis-Papadopoulos, George A. Gravvanis
A Hybrid Method for Solving Inhomogeneous Elliptic PDEs Based on Fokas Method. Comput. Methods Appl. Math. 18 (4) (2018)
George A. Gravvanis, John P. Morrison, Dan C. Marinescu, Christos K. Filelis-Papadopoulos
Special section: towards high performance computing in the cloud. J. Supercomput. 74 (2) (2018)
Christos K. Filelis-Papadopoulos, George A. Gravvanis, Panagiotis E. Kyziropoulos
A framework for simulating large scale cloud infrastructures. Future Gener. Comput. Syst. 79 (2018)
George A. Gravvanis, John P. Morrison, Dana Petcu, Theo Lynn, Christos K. Filelis-Papadopoulos
Special Issue: Recent trends in cloud computing. Future Gener. Comput. Syst. 79 (2018)
Patricia Takako Endo, Christos K. Filelis-Papadopoulos, Sergej Svorobej, Anna Gourinovitch, Konstantinos M. Giannoutakis, George A. Gravvanis, Dimitrios Tzovaras, Divyaa Manimaran Elango, James Byrne, Theo Lynn
RECAP (Reliable Capacity Provisioning and Enhanced Remediation for Distributed Cloud Applications): The Simulation Approach. ESOCC Workshops (2018)
Panagiotis E. Kyziropoulos, C. K. Filelis-Papadopoulos, George A. Gravvanis, Christos Efthymiopoulos
Toward the design of a novel hybrid parallel N-body method in scope of modern cloud architectures. J. Supercomput. 74 (2) (2018)
George Kostopoulos, Sotiris Kotsiantis, Christos Pierrakeas, Giannis Koutsonikos, George A. Gravvanis
Forecasting students' success in an open university. Int. J. Learn. Technol. 13 (1) (2018)
Byron E. Moutafis, Christos K. Filelis-Papadopoulos, George A. Gravvanis
Parallel Schur Complement Techniques Based on Multiprojection Methods. SIAM J. Sci. Comput. 40 (4) (2018)
C. K. Filelis-Papadopoulos, George A. Gravvanis, John P. Morrison
CloudLightning Simulation and Evaluation Roadmap. CloudNG@EuroSys (2017)
Byron E. Moutafis, Christos K. Filelis-Papadopoulos, George A. Gravvanis
Parallel multi-projection preconditioned methods based on semi-aggregation techniques. J. Comput. Sci. 22 (2017)
Antonios T. Makaratzis, Christos K. Filelis-Papadopoulos, Konstantinos M. Giannoutakis, George A. Gravvanis, Dimitrios Tzovaras
A comparative study of CPU power consumption models for cloud simulation frameworks. PCI (2017)
Christos K. Filelis-Papadopoulos, Huanhuan Xiong, Adrian F. Spataru, Gabriel G. Castañé, Dapeng Dong, George A. Gravvanis, John P. Morrison
A Generic Framework Supporting Self-Organisation and Self-Management in Hierarchical Systems. ISPDC (2017)
Georgios Kostopoulos, Anastasia-Dimitra Lipitakis, Sotiris Kotsiantis, George A. Gravvanis
Predicting Student Performance in Distance Higher Education Using Active Learning. EANN (2017)
Panagiotis E. Kyziropoulos, C. K. Filelis-Papadopoulos, George A. Gravvanis, Christos Efthymiopoulos
A parallel Self Mesh-Adaptive N-body method based on approximate inverses. J. Supercomput. 73 (12) (2017)
Konstantinos M. Giannoutakis, Antonios T. Makaratzis, Dimitrios Tzovaras, Christos K. Filelis-Papadopoulos, George A. Gravvanis
On the power consumption modeling for the simulation of Heterogeneous HPC clouds. CloudNG@EuroSys (2017)
Byron E. Moutafis, C. K. Filelis-Papadopoulos, Panagiotis E. Kyziropoulos, George A. Gravvanis
Parallel Multi-Projection type methods on hybrid CPU/MIC cluster. PCI (2017)
P. A. Dinopoulos, Eleftherios-Nektarios G. Grylonakis, C. K. Filelis-Papadopoulos, George A. Gravvanis
On the numerical solution of Helmholtz-type PDEs using an adaptive complex collocation technique. PCI (2017)
Athanasios Salamanis, Dionysios D. Kehagias, Christos K. Filelis-Papadopoulos, Dimitrios Tzovaras, George A. Gravvanis
Managing Spatial Graph Dependencies in Large Volumes of Traffic Data for Travel-Time Prediction. IEEE Trans. Intell. Transp. Syst. 17 (6) (2016)
Theo Lynn, Huanhuan Xiong, Dapeng Dong, Bilal Momani, George A. Gravvanis, Christos K. Filelis-Papadopoulos, Anne C. Elster, Malik Muhammad Zaki Murtaza Khan, Dimitrios Tzovaras, Konstantinos M. Giannoutakis, Dana Petcu, Marian Neagul, Ioan Dragon, Perumal Kuppudayar, Suryanarayanan Natarajan, Michael McGrath, Georgi Gaydadjiev, Tobias Becker, Anna Gourinovitch, David Kenny, John P. Morrison
CLOUDLIGHTNING: A Framework for a Self-organising and Self-managing Heterogeneous Cloud. CLOSER (1) (2016)
C. K. Filelis-Papadopoulos, Eleftherios-Nektarios G. Grylonakis, Panagiotis E. Kyziropoulos, George A. Gravvanis, John P. Morrison
Characterization of hardware in self-managing self-organizing Cloud environment. PCI (2016)
Antonios T. Makaratzis, Christos K. Filelis-Papadopoulos, George A. Gravvanis
Parallel multilevel recursive approximate inverse techniques for solving general sparse linear systems. J. Supercomput. 72 (6) (2016)
C. K. Filelis-Papadopoulos, George A. Gravvanis, Elias A. Lipitakis
A note on the convergence rate of a class of Approximate Sparse Inverse Matrix Methods. PCI (2016)
Byron E. Moutafis, Christos K. Filelis-Papadopoulos, George A. Gravvanis, John P. Morrison
On Issues Concerning Cloud Environments in Scope of Scalable Multi-Projection Methods. SYNASC (2016)
Byron E. Moutafis, C. K. Filelis-Papadopoulos, George A. Gravvanis
Deflation techniques in conjunction with generic factored approximate sparse inverse preconditioning. Panhellenic Conference on Informatics (2015)
Eleftherios-Nektarios G. Grylonakis, C. K. Filelis-Papadopoulos, George A. Gravvanis
On the numerical solution of the generalized dirichlet-neumann map for the 2D laplace equation using modified generic factored approximate sparse inverse preconditioning. Panhellenic Conference on Informatics (2015)
Hashem Saberi Najafi, S. A. Edalatpanah, George A. Gravvanis
An efficient method for computing the inverse of arrowhead matrices. Appl. Math. Lett. 33 (2014)
George A. Gravvanis, C. K. Filelis-Papadopoulos
Geometric multigrid methods based on Generic Approximate Sparse Inverses. Panhellenic Conference on Informatics (2014)
Eleftherios-Nektarios G. Grylonakis, C. K. Filelis-Papadopoulos, George A. Gravvanis
Higher Order Finite Difference Scheme for solving 3D Black-Scholes equation based on Generic Factored Approximate Sparse Inverse Preconditioning using Reordering Schemes. Panhellenic Conference on Informatics (2014)
George A. Gravvanis, Christos K. Filelis-Papadopoulos
Distributed generic approximate sparse inverses. J. Supercomput. 70 (1) (2014)
Christos K. Filelis-Papadopoulos, George A. Gravvanis
Parallel multigrid algorithms based on generic approximate sparse inverses: an SMP approach. J. Supercomput. 67 (2) (2014)
Christos K. Filelis-Papadopoulos, George A. Gravvanis, Elias A. Lipitakis
On the numerical modeling of convection-diffusion problems by finite element multigrid preconditioning methods. Adv. Eng. Softw. 68 (2014)
Panagiotis E. Kyziropoulos, C. K. Filelis-Papadopoulos, George A. Gravvanis
N-body simulation based on the Particle Mesh method using Multigrid schemes. FedCSIS (2013)
P. I. Matskanidis, George A. Gravvanis
Schur Complement Domain Decomposition in conjunction with Algebraic Multigrid methods based on Generic Approximate Inverses. FedCSIS (2013)
George A. Gravvanis, C. K. Filelis-Papadopoulos, Elias A. Lipitakis
On numerical modeling performance of generalized preconditioned methods. BCI (2013)
George A. Gravvanis, C. K. Filelis-Papadopoulos, Konstantinos M. Giannoutakis
Solving finite difference linear systems on GPUs: CUDA based Parallel Explicit Preconditioned Biconjugate Conjugate Gradient type Methods. J. Supercomput. 61 (3) (2012)
George A. Gravvanis, C. K. Filelis-Papadopoulos, Elias A. Lipitakis
A Note on the Comparison of a Class of Preconditioned Iterative Methods. Panhellenic Conference on Informatics (2012)
A. Karamouta, C. K. Filelis-Papadopoulos, George A. Gravvanis, M. T. Chryssomallis
On the Numerical Modeling and Solution of a Time Harmonic 3D Wave Equation by Explicit Approximate Inverse Preconditioning. Panhellenic Conference on Informatics (2012)
P. I. Matskanidis, George A. Gravvanis
On the Algebraic Multigrid Method Based on Generic Approximate Banded Inverses. Panhellenic Conference on Informatics (2012)
George A. Gravvanis
Special Issue on "Aspects of Numerical Algorithms, Parallelization and Applications". J. Comput. Appl. Math. 236 (3) (2011)
C. K. Filelis-Papadopoulos, George A. Gravvanis, Elias A. Lipitakis
Higher Order Finite Difference Preconditioned Scheme: A Multithreaded Approach. Panhellenic Conference on Informatics (2011)
P. I. Matskanidis, George A. Gravvanis, Konstantinos M. Giannoutakis
A Note on Parallel Finite Element Approximate Inverses Using OpenMP on Multicore Systems. Panhellenic Conference on Informatics (2011)
Dionysios D. Kehagias, Konstantinos M. Giannoutakis, George A. Gravvanis, Dimitrios Tzovaras
An ontology-based mechanism for automatic categorization of web services. Concurr. Comput. Pract. Exp. 24 (3) (2011)
C. K. Filelis-Papadopoulos, George A. Gravvanis, P. I. Matskanidis, Konstantinos M. Giannoutakis
On the GPGPU parallelization issues of finite element approximate inverse preconditioning. J. Comput. Appl. Math. 236 (3) (2011)
George A. Gravvanis, P. I. Matskanidis, Konstantinos M. Giannoutakis, Elias A. Lipitakis
Finite Element Approximate Inverse Preconditioning using POSIX threads on multicore systems. IMCSIT (2010)
George A. Gravvanis, John P. Morrison, Heinz Stockinger
Special Section: Defining the grid, experiences and future trends. Future Gener. Comput. Syst. 25 (4) (2009)
Vasilis P. Koutras, Agapios N. Platis, George A. Gravvanis
Optimal server resource reservation policies for priority classes of users under cyclic non-homogeneous markov modeling. Eur. J. Oper. Res. 198 (2) (2009)
George A. Gravvanis
OpenMP based parallel normalized direct methods for sparse finite element linear systems. J. Supercomput. 47 (1) (2009)
George A. Gravvanis, Victor N. Epitropou
Java multithreading-based parallel approximate arrow-type inverses. Concurr. Comput. Pract. Exp. 20 (10) (2008)
George A. Gravvanis, Konstantinos M. Giannoutakis
An Improved Parallel Algorithm for Computing Approximate Inverses by Reducing Synchronizations. ISPDC (2008)
Konstantinos M. Giannoutakis, George A. Gravvanis
Parallel Approximate Finite Element Inverses on Symmetric Multiprocessor Systems. ICCS (1) (2008)
Konstantinos M. Giannoutakis, George A. Gravvanis
High performance finite element approximate inverse preconditioning. Appl. Math. Comput. 201 (1-2) (2008)
George A. Gravvanis, John P. Morrison, Hamid R. Arabnia
Special section: Grid technology and applications. Future Gener. Comput. Syst. 23 (4) (2007)
George A. Gravvanis, John P. Morrison, Geoffrey C. Fox
Special issue on "Grid Technologies". J. Supercomput. 42 (1) (2007)
George A. Gravvanis, Victor N. Epitropou, Konstantinos M. Giannoutakis
On the performance of parallel approximate inverse preconditioning using Java multithreading techniques. Appl. Math. Comput. 190 (1) (2007)
Konstantinos M. Giannoutakis, George A. Gravvanis, Brian C. Clayton, Adarsh Patil, Therese Enright, John P. Morrison
Matching high performance approximate inverse preconditioning to architectural platforms. J. Supercomput. 42 (2) (2007)
Vasilis P. Koutras, Agapios N. Platis, George A. Gravvanis
On the optimization of free resources using non-homogeneous Markov chain software rejuvenation model. Reliab. Eng. Syst. Saf. 92 (12) (2007)
Vasilis P. Koutras, Agapios N. Platis, George A. Gravvanis
Software rejuvenation for resource optimization based on explicit approximate inverse preconditioning. Appl. Math. Comput. 189 (1) (2007)
Konstantinos M. Giannoutakis, George A. Gravvanis
On the Design of Parallel Finite Element Approximate Inverses. PDPTA (2007)
Victor N. Epitropou, Konstantinos M. Giannoutakis, George A. Gravvanis
Java Multithreading based Parallel Preconditioned Generalized Conjugate Gradient type methods. ISPDC (2007)
George A. Gravvanis, Konstantinos M. Giannoutakis
Parallel Exact and Approximate Arrow-Type Inverses on Symmetric Multiprocessor Systems. International Conference on Computational Science (1) (2006)
George A. Gravvanis, Konstantinos M. Giannoutakis
On the performance of parallel normalized explicit preconditioned conjugate gradient type methods. IPDPS (2006)
George A. Gravvanis, Hamid R. Arabnia
Special section: Parallel and distributed algorithms and systems. Future Gener. Comput. Syst. 22 (1-2) (2006)
Konstantinos M. Giannoutakis, George A. Gravvanis, M. P. Bekakos
High Performance Computations Using Internet and Grid Technology. Neural Parallel Sci. Comput. 13 (2005)
George A. Gravvanis, Konstantinos M. Giannoutakis
Parallel preconditioned conjugate gradient square method based on normalized approximate inverses. Sci. Program. 13 (2) (2005)
George A. Gravvanis, Hamid R. Arabnia
The Journal of Parallel Algorithms and Applications: Special Issue on Parallel and Distributed Algorithms. Parallel Algorithms Appl. 19 (2-3) (2004)
Ilias Maglogiannis, Elias P. Zafiropoulos, Agapios N. Platis, George A. Gravvanis
Computing the Success Factors in Consistent Acquisition and Recognition of Objects in Color Digital Images by Explicit Preconditioning. J. Supercomput. 30 (2) (2004)
George A. Gravvanis, Konstantinos M. Giannoutakis, M. P. Bekakos
Parallel Finite Element Approximate Inverse Preconditioning on Symmetric Multiprocessor Systems. PDPTA (2004)
George A. Gravvanis, Eunice E. Santos
Guest Editorial. J. Supercomput. 30 (2) (2004)
George A. Gravvanis, Konstantinos M. Giannoutakis
Normalized Isomorphic Preconditioned Methods for Solving Sparse Non-Linear Systems. MSV/AMCS (2004)
George A. Gravvanis, Konstantinos M. Giannoutakis, M. P. Bekakos, O. B. Efremides
Parallel and Systolic Solution of Normalized Explicit Approximate Inverse Preconditioning. J. Supercomput. 30 (2) (2004)
George A. Gravvanis, Konstantinos M. Giannoutakis
Solving Non-linear Finite Difference Systems by Normalized Approximate Inverses. CIS (2004)
George A. Gravvanis, Konstantinos M. Giannoutakis
Parallel Approximate Finite Element Inverse Preconditioning on Distributed Systems. ISPDC/HeteroPar (2004)
George A. Gravvanis, Konstantinos M. Giannoutakis, Nikolaos M. Missirlis
A Distributed Normalized Explicit Preconditioned Conjugate Gradient Method. Parallel Algorithms Appl. 19 (2-3) (2004)
George A. Gravvanis, Agapios N. Platis, Konstantinos M. Giannoutakis, J. B. Violentis, Elias A. Lipitakis
Performability Evaluation of Multitasking and Multiprocessor Systems by Explicit Approximate Inverses. PDPTA (2003)
Agapios N. Platis, George A. Gravvanis, Konstantinos M. Giannoutakis, Elias A. Lipitakis
A Two-Phase Cyclic Nonhomogeneous Markov Chain Performability Evaluation by Explicit Approximate Inverses Applied to a Replicated Database System. J. Math. Model. Algorithms 2 (3) (2003)
George A. Gravvanis
Guest Editor's Editorial Computational Science and Scientific Computing. J. Supercomput. 25 (2) (2003)
Hamid R. Arabnia, George A. Gravvanis
Editorial - Special Issue: Computational Sciences and Applications. J. Math. Model. Algorithms 2 (3) (2003)
George A. Gravvanis
On the Solution of Boundary Value Problems by Using Fast Generalized Approximate Inverse Banded Matrix Techniques. J. Supercomput. 25 (2) (2003)
George A. Gravvanis
Solving Symmetric Arrowhead and Special Tridiagonal Linear Systems by Fast Approximate Inverse Preconditioning. J. Math. Model. Algorithms 1 (4) (2002)
Konstantinos M. Giannoutakis, George A. Gravvanis
A Normalized Explicit Preconditioned Conjugate Gradient Method for Solving Sparse Non-linear Systems. PDPTA (2002)
George A. Gravvanis
Domain Decomposition?CFinite Difference Approximate Inverse Preconditioned Schemes for Solving Fourth-Order Equations. J. Math. Model. Algorithms 1 (3) (2002)

George A. Gravvanis.css-eqlu8i{font-size:small;padding-left:4px;}

Publication Activity (10 Years)

Top Topics

Top Venues

George A. Gravvanis