Simulating fog and edge computing scenarios: An overview and research challenges S Svorobej, P Takako Endo, M Bendechache, C Filelis-Papadopoulos, ... Future Internet 11 (3), 55, 2019 | 146 | 2019 |

Managing spatial graph dependencies in large volumes of traffic data for travel-time prediction A Salamanis, DD Kehagias, CK Filelis-Papadopoulos, D Tzovaras, ... IEEE Transactions on Intelligent Transportation Systems 17 (6), 1678-1687, 2015 | 92 | 2015 |

Explicit approximate inverse preconditioning techniques GA Gravvanis Archives of Computational Methods in Engineering 9, 371-402, 2002 | 60 | 2002 |

The rate of convergence of explicit approximate inverse preconditioning GA Gravvanis International journal of computer mathematics 60 (1-2), 77-89, 1996 | 48 | 1996 |

High performance inverse preconditioning GA Gravvanis Archives of Computational Methods in Engineering 16, 77-108, 2009 | 43 | 2009 |

Forecasting students' success in an open university G Kostopoulos, S Kotsiantis, C Pierrakeas, G Koutsonikos, GA Gravvanis International Journal of Learning Technology 13 (1), 26-43, 2018 | 38 | 2018 |

Predicting student performance in distance higher education using active learning G Kostopoulos, AD Lipitakis, S Kotsiantis, G Gravvanis Engineering Applications of Neural Networks: 18th International Conference …, 2017 | 37 | 2017 |

On the optimization of free resources using non-homogeneous Markov chain software rejuvenation model VP Koutras, AN Platis, GA Gravvanis Reliability Engineering & System Safety 92 (12), 1724-1732, 2007 | 36 | 2007 |

CLOUDLIGHTNING: A Framework for a Self-organising and Self-managing Heterogeneous Cloud. T Lynn, H Xiong, D Dong, B Momani, GA Gravvanis, ... CLOSER (1), 333-338, 2016 | 35 | 2016 |

An approximate inverse matrix technique for arrowhead matrices GA Gravvanis International journal of computer mathematics 70 (1), 35-45, 1998 | 34 | 1998 |

Explicit preconditioned iterative methods for solving large unsymmetric finite element systems EA Lipitakis, GA Gravvanis Computing (Wien. Print) 54 (2), 167-183, 1995 | 31 | 1995 |

The variability of the reasons for student dropout in distance learning and the prediction of dropout-prone students C Pierrakeas, G Koutsonikos, AD Lipitakis, S Kotsiantis, M Xenos, ... Machine learning paradigms: Advances in learning analytics, 91-111, 2020 | 30 | 2020 |

An efficient method for computing the inverse of arrowhead matrices HS Najafi, SA Edalatpanah, GA Gravvanis Applied mathematics letters 33, 1-5, 2014 | 29 | 2014 |

Parallel matrix techniques GA Gravvanis Computational fluid dynamics'98, 472-477, 1998 | 29 | 1998 |

Solving finite difference linear systems on GPUs: CUDA based parallel explicit preconditioned biconjugate conjugate gradient type methods GA Gravvanis, CK Filelis-Papadopoulos, KM Giannoutakis The Journal of Supercomputing 61, 590-604, 2012 | 26 | 2012 |

Large-scale simulation of a self-organizing self-management cloud computing framework CK Filelis-Papadopoulos, KM Giannoutakis, GA Gravvanis, D Tzovaras The Journal of Supercomputing 74, 530-550, 2018 | 23 | 2018 |

A framework for simulating large scale cloud infrastructures CK Filelis-Papadopoulos, GA Gravvanis, PE Kyziropoulos Future Generation Computer Systems 79, 703-714, 2018 | 20 | 2018 |

Generic approximate sparse inverse matrix techniques CK Filelis-Papadopoulos, GA Gravvanis International Journal of Computational Methods 11 (06), 1350084, 2014 | 20 | 2014 |

Optimal server resource reservation policies for priority classes of users under cyclic non-homogeneous markov modeling VP Koutras, AN Platis, GA Gravvanis European Journal of Operational Research 198 (2), 545-556, 2009 | 20 | 2009 |

An explicit sparse unsymmetric finite element solver GA Gravvanis, EA Lipitakis Communications in numerical methods in engineering 12 (1), 21-29, 1996 | 19 | 1996 |