ΜΕΛΕΤΗ ΥΠΟΛΟΓΙΣΤΙΚΩΝ ΜΕΘΟΔΩΝ ΓΙΑ ΤΗΝ ΑΡΙΘΜΗΤΙΚΗ ΕΠΙΛΥΣΗ ΕΛΛΕΙΠΤΙΚΩΝ ΚΑΙ ΠΑΡΑΒΟΛΙΚΩΝ ΔΙΑΦΟΡΙΚΩΝ ΕΞΙΣΩΣΕΩΝ ΜΕ ΔΥΟ ΚΑΙ ΤΡΕΙΣ ΧΩΡΟΜΕΤΑΒΛΗΤΕΣ - George A. Gravvanis (1992)

Explicit Preconditioned Iterative Methods for Solving Large Unsymmetric Finite Element Systems. - Elias A. Lipitakis; George A. Gravvanis (Computing, 1995)

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

The rate of convergence of explicit approximate inverse preconditioning. - George A. Gravvanis (Int. J. Comput. Math., 1996)

An approximate inverse matrix technique for arrowhead matrices. - George A. Gravvanis (Int. J. Comput. Math., 1998)

Generalized approximate inverse finite element matrix techniques. - George A. Gravvanis (Neural Parallel Sci. Comput., 1999)

Domain Decomposition Approximate Inverse Preconditioning for Solving Fourth Order Equations. - George A. Gravvanis (PDPTA, 2000)

Explicit isomorphic iterative methods for solving arrow-type linear systems. - George A. Gravvanis (Int. J. Comput. Math., 2000)

A fast explicit preconditioned finite element scheme. - George A. Gravvanis (Neural Parallel Sci. Comput., 2001)

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

A Normalized Explicit Preconditioned Conjugate Gradient Method for Solving Sparse Non-linear Systems. - Konstantinos M. Giannoutakis; George A. Gravvanis (PDPTA, 2002)

Performability Evaluation of a Replicated Database System by Explicit Approximate Inverses. - George A. Gravvanis; Agapios N. Platis; J. B. Violentis; Konstantinos M. Giannoutakis (PDPTA, 2002)

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

Solving Symmetric Arrowhead and Special Tridiagonal Linear Systems by Fast Approximate Inverse Preconditioning. - George A. Gravvanis (J. Math. Model. Algorithms, 2002)

Performability Evaluation of Multitasking and Multiprocessor Systems by Explicit Approximate Inverses. - George A. Gravvanis; Agapios N. Platis; Konstantinos M. Giannoutakis; J. B. Violentis; Elias A. Lipitakis (PDPTA, 2003)

Editorial - Special Issue: Computational Sciences and Applications. - Hamid R. Arabnia; George A. Gravvanis (J. Math. Model. Algorithms, 2003)

A Two-Phase Cyclic Nonhomogeneous Markov Chain Performability Evaluation by Explicit Approximate Inverses Applied to a Replicated Database System. - Agapios N. Platis; George A. Gravvanis; Konstantinos M. Giannoutakis; Elias A. Lipitakis (J. Math. Model. Algorithms, 2003)

Guest Editor's Editorial Computational Science and Scientific Computing. - George A. Gravvanis (J. Supercomput., 2003)

On the Solution of Boundary Value Problems by Using Fast Generalized Approximate Inverse Banded Matrix Techniques. - George A. Gravvanis (J. Supercomput., 2003)

Solving Non-linear Finite Difference Systems by Normalized Approximate Inverses. - George A. Gravvanis; Konstantinos M. Giannoutakis (CIS, 2004)

Parallel Approximate Finite Element Inverse Preconditioning on Distributed Systems. - George A. Gravvanis; Konstantinos M. Giannoutakis (ISPDC/HeteroPar, 2004)

Normalized Isomorphic Preconditioned Methods for Solving Sparse Non-Linear Systems. - George A. Gravvanis; Konstantinos M. Giannoutakis (MSV/AMCS, 2004)

Parallel Finite Element Approximate Inverse Preconditioning on Symmetric Multiprocessor Systems. - George A. Gravvanis; Konstantinos M. Giannoutakis; M. P. Bekakos (PDPTA, 2004)

The Journal of Parallel Algorithms and Applications: Special Issue on Parallel and Distributed Algorithms. - George A. Gravvanis; Hamid R. Arabnia (Parallel Algorithms Appl., 2004)

A Distributed Normalized Explicit Preconditioned Conjugate Gradient Method. - George A. Gravvanis; Konstantinos M. Giannoutakis; Nikolaos M. Missirlis (Parallel Algorithms Appl., 2004)

Parallel and Systolic Solution of Normalized Explicit Approximate Inverse Preconditioning. - George A. Gravvanis; Konstantinos M. Giannoutakis; Michael P. Bekakos; Odysseas Efremides (J. Supercomput., 2004)

Guest Editorial. - George A. Gravvanis; Eunice E. Santos (J. Supercomput., 2004)

Computing the Success Factors in Consistent Acquisition and Recognition of Objects in Color Digital Images by Explicit Preconditioning. - Ilias Maglogiannis; Elias P. Zafiropoulos; Agapios N. Platis; George A. Gravvanis (J. Supercomput., 2004)

High Performance Computations Using Internet and Grid Technology. - Konstantinos M. Giannoutakis; George A. Gravvanis; M. P. Bekakos (Neural Parallel Sci. Comput., 2005)

Parallel preconditioned conjugate gradient square method based on normalized approximate inverses. - George A. Gravvanis; Konstantinos M. Giannoutakis (Sci. Program., 2005)

Parallel Exact and Approximate Arrow-Type Inverses on Symmetric Multiprocessor Systems. - George A. Gravvanis; Konstantinos M. Giannoutakis (International Conference on Computational Science (1), 2006)

On the performance of parallel normalized explicit preconditioned conjugate gradient type methods. - George A. Gravvanis; Konstantinos M. Giannoutakis (IPDPS, 2006)

Special section: Parallel and distributed algorithms and systems. - George A. Gravvanis; Hamid R. Arabnia (Future Gener. Comput. Syst., 2006)

Java Multithreading based Parallel Preconditioned Generalized Conjugate Gradient type methods. - Victor N. Epitropou; Konstantinos M. Giannoutakis; George A. Gravvanis (ISPDC, 2007)

On the Design of Parallel Finite Element Approximate Inverses. - Konstantinos M. Giannoutakis; George A. Gravvanis (PDPTA, 2007)

On the performance of parallel approximate inverse preconditioning using Java multithreading techniques. - George A. Gravvanis; Victor N. Epitropou; Konstantinos M. Giannoutakis (Appl. Math. Comput., 2007)

Software rejuvenation for resource optimization based on explicit approximate inverse preconditioning. - Vasilis P. Koutras; Agapios N. Platis; George A. Gravvanis (Appl. Math. Comput., 2007)

Special section: Grid technology and applications. - George A. Gravvanis; John P. Morrison; Hamid R. Arabnia (Future Gener. Comput. Syst., 2007)

On the optimization of free resources using non-homogeneous Markov chain software rejuvenation model. - Vasilis P. Koutras; Agapios N. Platis; George A. Gravvanis (Reliab. Eng. Syst. Saf., 2007)

Matching high performance approximate inverse preconditioning to architectural platforms. - Konstantinos M. Giannoutakis; George A. Gravvanis; Brian C. Clayton; Adarsh Patil 001; Therese Enright; John P. Morrison (J. Supercomput., 2007)

Special issue on "Grid Technologies". - George A. Gravvanis; John P. Morrison; Geoffrey C. Fox (J. Supercomput., 2007)

Parallel Approximate Finite Element Inverses on Symmetric Multiprocessor Systems. - Konstantinos M. Giannoutakis; George A. Gravvanis (ICCS (1), 2008)

An Improved Parallel Algorithm for Computing Approximate Inverses by Reducing Synchronizations. - George A. Gravvanis; Konstantinos M. Giannoutakis (ISPDC, 2008)

High performance finite element approximate inverse preconditioning. - Konstantinos M. Giannoutakis; George A. Gravvanis (Appl. Math. Comput., 2008)

Java multithreading-based parallel approximate arrow-type inverses. - George A. Gravvanis; Victor N. Epitropou (Concurr. Comput. Pract. Exp., 2008)

Optimal server resource reservation policies for priority classes of users under cyclic non-homogeneous markov modeling. - Vasilis P. Koutras; Agapios N. Platis; George A. Gravvanis (Eur. J. Oper. Res., 2009)

Special Section: Defining the grid, experiences and future trends. - George A. Gravvanis; John P. Morrison; Heinz Stockinger (Future Gener. Comput. Syst., 2009)

OpenMP based parallel normalized direct methods for sparse finite element linear systems. - George A. Gravvanis (J. Supercomput., 2009)

Finite Element Approximate Inverse Preconditioning using POSIX threads on multicore systems. - George A. Gravvanis; P. I. Matskanidis; Konstantinos M. Giannoutakis; Elias A. Lipitakis (IMCSIT, 2010)

Higher Order Finite Difference Preconditioned Scheme: A Multithreaded Approach. - C. K. Filelis-Papadopoulos; George A. Gravvanis; Elias A. Lipitakis (Panhellenic Conference on Informatics, 2011)

A Note on Parallel Finite Element Approximate Inverses Using OpenMP on Multicore Systems. - P. I. Matskanidis; George A. Gravvanis; Konstantinos M. Giannoutakis (Panhellenic Conference on Informatics, 2011)

An ontology-based mechanism for automatic categorization of web services. - Dionysios D. Kehagias; Konstantinos M. Giannoutakis; George A. Gravvanis; Dimitrios Tzovaras (Concurr. Comput. Pract. Exp., 2011)

On the GPGPU parallelization issues of finite element approximate inverse preconditioning. - C. K. Filelis-Papadopoulos; George A. Gravvanis; P. I. Matskanidis; Konstantinos M. Giannoutakis (J. Comput. Appl. Math., 2011)

Special Issue on "Aspects of Numerical Algorithms, Parallelization and Applications". - George A. Gravvanis (J. Comput. Appl. Math., 2011)

A Note on the Comparison of a Class of Preconditioned Iterative Methods. - George A. Gravvanis; C. K. Filelis-Papadopoulos; Elias A. Lipitakis (Panhellenic Conference on Informatics, 2012)

On the Numerical Modeling and Solution of a Time Harmonic 3D Wave Equation by Explicit Approximate Inverse Preconditioning. - A. Karamouta; C. K. Filelis-Papadopoulos; George A. Gravvanis; M. T. Chryssomallis (Panhellenic Conference on Informatics, 2012)

On the Algebraic Multigrid Method Based on Generic Approximate Banded Inverses. - P. I. Matskanidis; George A. Gravvanis (Panhellenic Conference on Informatics, 2012)

Solving finite difference linear systems on GPUs: CUDA based Parallel Explicit Preconditioned Biconjugate Conjugate Gradient type Methods. - George A. Gravvanis; C. K. Filelis-Papadopoulos; Konstantinos M. Giannoutakis (J. Supercomput., 2012)

On numerical modeling performance of generalized preconditioned methods. - George A. Gravvanis; C. K. Filelis-Papadopoulos; Elias A. Lipitakis (BCI, 2013)

N-body simulation based on the Particle Mesh method using Multigrid schemes. - Panagiotis E. Kyziropoulos; C. K. Filelis-Papadopoulos; George A. Gravvanis (FedCSIS, 2013)

Schur Complement Domain Decomposition in conjunction with Algebraic Multigrid methods based on Generic Approximate Inverses. - P. I. Matskanidis; George A. Gravvanis (FedCSIS, 2013)

Geometric multigrid methods based on Generic Approximate Sparse Inverses. - George A. Gravvanis; C. K. Filelis-Papadopoulos (Panhellenic Conference on Informatics, 2014)

Higher Order Finite Difference Scheme for solving 3D Black-Scholes equation based on Generic Factored Approximate Sparse Inverse Preconditioning using Reordering Schemes. - Eleftherios-Nektarios G. Grylonakis; C. K. Filelis-Papadopoulos; George A. Gravvanis (Panhellenic Conference on Informatics, 2014)

On the numerical modeling of convection-diffusion problems by finite element multigrid preconditioning methods. - Christos K. Filelis-Papadopoulos; George A. Gravvanis; Elias A. Lipitakis (Adv. Eng. Softw., 2014)

An efficient method for computing the inverse of arrowhead matrices. - Hashem Saberi Najafi; S. A. Edalatpanah 001; George A. Gravvanis (Appl. Math. Lett., 2014)

Parallel multigrid algorithms based on generic approximate sparse inverses: an SMP approach. - Christos K. Filelis-Papadopoulos; George A. Gravvanis (J. Supercomput., 2014)

Distributed generic approximate sparse inverses. - George A. Gravvanis; Christos K. Filelis-Papadopoulos (J. Supercomput., 2014)

On the numerical solution of the generalized dirichlet-neumann map for the 2D laplace equation using modified generic factored approximate sparse inverse preconditioning. - Eleftherios-Nektarios G. Grylonakis; C. K. Filelis-Papadopoulos; George A. Gravvanis (Panhellenic Conference on Informatics, 2015)

Deflation techniques in conjunction with generic factored approximate sparse inverse preconditioning. - Byron E. Moutafis; C. K. Filelis-Papadopoulos; George A. Gravvanis (Panhellenic Conference on Informatics, 2015)

CLOUDLIGHTNING: A Framework for a Self-organising and Self-managing Heterogeneous Cloud. - 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; et al. (CLOSER (1), 2016)

A note on the convergence rate of a class of Approximate Sparse Inverse Matrix Methods. - C. K. Filelis-Papadopoulos; George A. Gravvanis; Elias A. Lipitakis (PCI, 2016)

Characterization of hardware in self-managing self-organizing Cloud environment. - C. K. Filelis-Papadopoulos; Eleftherios-Nektarios G. Grylonakis; Panagiotis E. Kyziropoulos; George A. Gravvanis; John P. Morrison (PCI, 2016)

On Issues Concerning Cloud Environments in Scope of Scalable Multi-Projection Methods. - Byron E. Moutafis; Christos K. Filelis-Papadopoulos; George A. Gravvanis; John P. Morrison (SYNASC, 2016)

Managing Spatial Graph Dependencies in Large Volumes of Traffic Data for Travel-Time Prediction. - Athanasios Salamanis; Dionysios D. Kehagias; Christos K. Filelis-Papadopoulos; Dimitrios Tzovaras; George A. Gravvanis (IEEE Trans. Intell. Transp. Syst., 2016)

Parallel multilevel recursive approximate inverse techniques for solving general sparse linear systems. - Antonios T. Makaratzis; Christos K. Filelis-Papadopoulos; George A. Gravvanis (J. Supercomput., 2016)

Predicting Student Performance in Distance Higher Education Using Active Learning. - Georgios Kostopoulos; Anastasia-Dimitra Lipitakis; Sotiris Kotsiantis; George A. Gravvanis (EANN, 2017)

CloudLightning Simulation and Evaluation Roadmap. - C. K. Filelis-Papadopoulos; George A. Gravvanis; John P. Morrison (CloudNG@EuroSys, 2017)

On the power consumption modeling for the simulation of Heterogeneous HPC clouds. - Konstantinos M. Giannoutakis; Antonios T. Makaratzis; Dimitrios Tzovaras; Christos K. Filelis-Papadopoulos; George A. Gravvanis (CloudNG@EuroSys, 2017)

A Generic Framework Supporting Self-Organisation and Self-Management in Hierarchical Systems. - Christos K. Filelis-Papadopoulos; Huanhuan Xiong; Adrian F. Spataru; Gabriel G. Castañé; Dapeng Dong; George A. Gravvanis; John P. Morrison (ISPDC, 2017)

On the numerical solution of Helmholtz-type PDEs using an adaptive complex collocation technique. - P. A. Dinopoulos; Eleftherios-Nektarios G. Grylonakis; C. K. Filelis-Papadopoulos; George A. Gravvanis (PCI, 2017)

A comparative study of CPU power consumption models for cloud simulation frameworks. - Antonios T. Makaratzis; Christos K. Filelis-Papadopoulos; Konstantinos M. Giannoutakis; George A. Gravvanis; Dimitrios Tzovaras (PCI, 2017)

Parallel Multi-Projection type methods on hybrid CPU/MIC cluster. - Byron E. Moutafis; C. K. Filelis-Papadopoulos; Panagiotis E. Kyziropoulos; George A. Gravvanis (PCI, 2017)

Parallel multi-projection preconditioned methods based on semi-aggregation techniques. - Byron E. Moutafis; Christos K. Filelis-Papadopoulos; George A. Gravvanis (J. Comput. Sci., 2017)

A parallel Self Mesh-Adaptive N-body method based on approximate inverses. - Panagiotis E. Kyziropoulos; C. K. Filelis-Papadopoulos; George A. Gravvanis; Christos Efthymiopoulos (J. Supercomput., 2017)

RECAP (Reliable Capacity Provisioning and Enhanced Remediation for Distributed Cloud Applications): The Simulation Approach. - 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 (ESOCC Workshops, 2018)

A Hybrid Method for Solving Inhomogeneous Elliptic PDEs Based on Fokas Method. - Eleftherios-Nektarios G. Grylonakis; Christos K. Filelis-Papadopoulos; George A. Gravvanis (Comput. Methods Appl. Math., 2018)

A framework for simulating large scale cloud infrastructures. - Christos K. Filelis-Papadopoulos; George A. Gravvanis; Panagiotis E. Kyziropoulos (Future Gener. Comput. Syst., 2018)

Special Issue: Recent trends in cloud computing. - George A. Gravvanis; John P. Morrison; Dana Petcu; Theo Lynn; Christos K. Filelis-Papadopoulos (Future Gener. Comput. Syst., 2018)

Forecasting students' success in an open university. - George Kostopoulos; Sotiris Kotsiantis; Christos Pierrakeas; Giannis Koutsonikos; George A. Gravvanis (Int. J. Learn. Technol., 2018)

Parallel Schur Complement Techniques Based on Multiprojection Methods. - Byron E. Moutafis; Christos K. Filelis-Papadopoulos; George A. Gravvanis (SIAM J. Sci. Comput., 2018)

Large-scale simulation of a self-organizing self-management cloud computing framework. - Christos K. Filelis-Papadopoulos; Konstantinos M. Giannoutakis; George A. Gravvanis; Dimitrios Tzovaras (J. Supercomput., 2018)

Special section: towards high performance computing in the cloud. - George A. Gravvanis; John P. Morrison; Dan C. Marinescu; Christos K. Filelis-Papadopoulos (J. Supercomput., 2018)

Toward the design of a novel hybrid parallel N-body method in scope of modern cloud architectures. - Panagiotis E. Kyziropoulos; C. K. Filelis-Papadopoulos; George A. Gravvanis; Christos Efthymiopoulos (J. Supercomput., 2018)

Analyzing resource distribution over a real-world large-scale virtual content infrastructure. - 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 001; Sergej Svorobej (ISCC, 2019)

Simulating Fog and Edge Computing Scenarios: An Overview and Research Challenges. - Sergej Svorobej; Patricia Takako Endo; Malika Bendechache; Christos K. Filelis-Papadopoulos; Konstantinos M. Giannoutakis; George A. Gravvanis; Dimitrios Tzovaras; James Byrne; Theo Lynn (Future Internet, 2019)

An iterative spatial-stepping numerical method for linear elliptic PDEs using the Unified Transform. - Eleftherios-Nektarios G. Grylonakis; Christos K. Filelis-Papadopoulos; George A. Gravvanis; Athanassios S. Fokas (J. Comput. Appl. Math., 2019)

Distributed algebraic tearing and interconnecting techniques. - N. A. Tselepidis; Christos K. Filelis-Papadopoulos; George A. Gravvanis (Numer. Algorithms, 2019)

Simulating large vCDN networks: A parallel approach. - Christos K. Filelis-Papadopoulos; Konstantinos M. Giannoutakis; George A. Gravvanis; Patricia Takako Endo; Dimitrios Tzovaras; Sergej Svorobej; Theo Lynn (Simul. Model. Pract. Theory, 2019)

A parallel unified transform solver based on domain decomposition for solving linear elliptic PDEs. - Eleftherios-Nektarios G. Grylonakis; George A. Gravvanis; Christos K. Filelis-Papadopoulos; Athanassios S. Fokas (J. Supercomput., 2019)

Advanced Parametric Methods for Short-Term Traffic Forecasting in the Era of Big Data. - George A. Gravvanis; Athanasios I. Salamanis; Christos K. Filelis-Papadopoulos (Machine Learning Paradigms, 2019)

Benchmark Comparison of Methods for Approximate Neighborhood Estimation of Road Segments in Large-Scale Traffic Networks. - Athanasios I. Salamanis; George A. Gravvanis; Christos K. Filelis-Papadopoulos; Dimitrios Michail 001 (PCI, 2020)

An Efficient Method for Accelerating Training of Short-Term Traffic Prediction Models in Large-Scale Traffic Networks. - Athanasios I. Salamanis; George A. Gravvanis; Christos K. Filelis-Papadopoulos; Dimitrios Tzovaras (PCI, 2020)

Hybrid multi-projection method using sparse approximate inverses on GPU clusters. - Byron E. Moutafis; George A. Gravvanis; Christos K. Filelis-Papadopoulos (Int. J. High Perform. Comput. Appl., 2020)

Towards simulation and optimization of cache placement on large virtual content distribution networks. - Christos K. Filelis-Papadopoulos; Patricia Takako Endo; Malika Bendechache; Sergej Svorobej; Konstantinos M. Giannoutakis; George A. Gravvanis; Dimitrios Tzovaras; James Byrne; Theo Lynn (J. Comput. Sci., 2020)

A note on parallel approximate pseudoinverse matrix techniques for solving linear least squares problems. - Anastasia-Dimitra Lipitakis; Christos K. Filelis-Papadopoulos; George A. Gravvanis; Dimosthenis Anagnostopoulos (J. Comput. Sci., 2020)

On the design of two-stage multiprojection methods for distributed memory systems. - Byron E. Moutafis; George A. Gravvanis; C. K. Filelis-Papadopoulos (J. Supercomput., 2020)

The Variability of the Reasons for Student Dropout in Distance Learning and the Prediction of Dropout-Prone Students. - Christos Pierrakeas; Giannis Koutsonikos; Anastasia-Dimitra Lipitakis; Sotiris Kotsiantis; Michalis Xenos; George A. Gravvanis (Machine Learning Paradigms, 2020)

On the Optimization of Self-Organization and Self-Management Hardware Resource Allocation for Heterogeneous Clouds. - Konstantinos M. Giannoutakis; Christos K. Filelis-Papadopoulos; George A. Gravvanis; Dimitrios Tzovaras (Comput., 2021)

Evaluation of self-organizing and self-managing heterogeneous high performance computing clouds through discrete-time simulation. - Konstantinos M. Giannoutakis; Christos K. Filelis-Papadopoulos; George A. Gravvanis; Dimitrios Tzovaras (Concurr. Comput. Pract. Exp., 2021)

An adaptive cluster-based sparse autoregressive model for large-scale multi-step traffic forecasting. - Athanasios I. Salamanis; Anastasia-Dimitra Lipitakis; George A. Gravvanis; Sotiris Kotsiantis; Dimosthenis Anagnostopoulos (Expert Syst. Appl., 2021)

Rotation forest of random subspace models. - Stamatios-Aggelos N. Alexandropoulos; Christos K. Aridas; Sotiris B. Kotsiantis; George A. Gravvanis; Michael N. Vrahatis (Intell. Decis. Technol., 2022)

Novel Sparse Feature Regression Method for Traffic Forecasting. - Athanasios I. Salamanis; George A. Gravvanis; Sotiris B. Kotsiantis; Michael N. Vrahatis (Int. J. Artif. Intell. Tools, 2023)

A generic sparse regression imputation method for time series and tabular data. - Athanasios I. Salamanis; George A. Gravvanis; Sotiris Kotsiantis; Konstantinos M. Giannoutakis (Knowl. Based Syst., 2023)

Sparse Approximate Pseudoinverse Preconditioning for Sparse Supervised Learning Problems with More Features than Samples. - Anastasia-Dimitra Lipitakis; George A. Gravvanis; Christos K. Filelis-Papadopoulos; Sotiris Kotsiantis; Dimosthenis Anagnostopoulos (Int. J. Artif. Intell. Tools, 2024)