Ioannis A. Nikas
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Bounding the zeros of an interval equation
IA Nikas, TN Grapsa
Applied Mathematics and Computation 213 (2), 466-478, 2009
Forecasting tourism demand using linear and nonlinear prediction models
A Koutras, A Panagopoulos, IA Nikas
Academica Touristica: Tourism and Innovation Journal 9 (1), 85-98, 2016
Improved Newton’s method without direct function evaluations
EN Malihoutsaki, IA Nikas, TN Grapsa
Journal of Computational and Applied Mathematics 227 (1), 206-212, 2009
Improving the efficiency of a polynomial system solver via a reordering technique
DG Sotiropoulos, IA Nikas, TN Grapsa
Proceedings of 4th GRACM Congress on Computational Mechanics 3, 970-977, 2002
A lexicographic approach on unconstrained optimization
CD Nikolakakou, TN Grapsa, IA Nikas, GS Androulakis
Euro XXIII 2009: 23rd Conference on Operational Research, 90, 2009
A sequential approach for unconstrained optimization via a partitioning technique
CD Nikolakakou, TN Grapsa, IA Nikas, GS Androulakis
International Journal of Computer Mathematics 92 (4), 722-741, 2015
Towards Developing Smart Cities: Evidence from GIS Analysis on Tourists’ Behavior Using Social Network Data in the City of Athens
A Koutras, IA Nikas, A Panagopoulos
Smart Tourism as a Driver for Culture and Sustainability, 407-418, 2019
Extending Interval Newton Method for Nonlinear Parameterized Equations
IA Nikas, DG Sotiropoulos, TN Grapsa
Proceedings of ICNAAM 2006: International Conference on Numerical Analysis …, 2006
Evaluating the Performance of Linear and Nonlinear Models in Forecasting Tourist Occupancy in the Region of Western Greece
A Koutras, A Panagopoulos, IA Nikas
Tourism and Culture in the Age of Innovation, 377-391, 2016
Hybridization of bisection method for solving non-differentiable nonlinear equations
I Nikas, T Grapsa
24th Pan-Hellenic Conference on Informatics, 277-280, 2020
Άριστοι συνδυασμοί παικτών σε μια ομάδα καλαθοσφαίρισης
Ι Νίκας, Γ Καρολίδης, Γ Ανδρουλάκης
19ο Συνέδριο Διοίκησης Αθλητισμού και Αναψυχής με Διεθνή Συμμετοχή, 79-82, 2018
Χρήση της Θεωρίας IRT στην αξιολόγηση της απόδοσης των παικτών ομάδων καλαθοσφαίρισης
Ι Νίκας, Ι Κάτσενος, Γ Ανδρουλάκης
19ο Συνέδριο Διοίκησης Αθλητισμού και Αναψυχής με Διεθνή Συμμετοχή, 75-78, 2018
Redundant constraints identification in linear programming using statistics on constraints
EI Nikolopoulou, IA Nikas, GS Androulakis
Proceedings of HELORS 2017: 6th International Symposium and 28th National …, 2017
Predicting Tourism Demand in the Western Greece Region Using Independent Component Analysis
A Koutras, A Panagopoulos, IA Nikas
Tourism and Culture in the Age of Innovation, 361-375, 2016
Forecasting the tourism demand using time-series - A case study on the prefectures of Western Greece
A Panagopoulos, S Malefaki, IA Nikas
Journal of Tourism Research 11, 162-173, 2015
Tourism forecasting using back-tracking optimization
GS Androulakis, IA Nikas, TN Grapsa, A Panagopoulos
Proceedings of ICTHM: 5th International Conference on Tourism & Hospitality …, 2015
A comparative study on tourism demand in region of Western Greece and its contiguous regions
A Panagopoulos, A Panagopoulos, IA Nikas, TN Grapsa
Archives of Economic History 27 (2), 19-35, 2015
A heuristic technique for selecting ARIMA models for forecasting tourism time series
IA Nikas, A Panagopoulos
Proceedings of ICOT 2015: 5th International Conference on Tourism, 238-251, 2015
Efficient unconstrained optimization multistart solvers using a self-clustering technique
IA Nikas
Proceedings of NumAn2014: Conference on Numerical Analysis, 204-209, 2014
An escape-from-local minima technique in unconstrained
IA Nikas, TN Grapsa
Numan2012: 5th Conference in Numerical Analysis, 34, 2012
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