Sotirios Chatzis
Sotirios Chatzis
Assistant Professor @ Cyprus University of Technology
Verified email at - Homepage
TitleCited byYear
A fuzzy clustering approach toward hidden Markov random field models for enhanced spatially constrained image segmentation
SP Chatzis, TA Varvarigou
IEEE Transactions on Fuzzy Systems 16 (5), 1351-1361, 2008
Robust sequential data modeling using an outlier tolerant hidden Markov model
SP Chatzis, DI Kosmopoulos, TA Varvarigou
IEEE transactions on pattern analysis and machine intelligence 31 (9), 1657-1669, 2008
Echo state Gaussian process
SP Chatzis, Y Demiris
IEEE Transactions on Neural Networks 22 (9), 1435-1445, 2011
A fuzzy c-means-type algorithm for clustering of data with mixed numeric and categorical attributes employing a probabilistic dissimilarity functional
SP Chatzis
Expert systems with applications 38 (7), 8684-8689, 2011
The infinite hidden Markov random field model
SP Chatzis, G Tsechpenakis
IEEE Transactions on Neural Networks 21 (6), 1004-1014, 2010
Robust visual behavior recognition
D Kosmopoulos, SP Chatzis
IEEE Signal Processing Magazine 27 (5), 34-45, 2010
Factor Analysis Latent Subspace Modeling and Robust Fuzzy Clustering Using -Distributions
S Chatzis, T Varvarigou
IEEE Transactions on Fuzzy Systems 17 (3), 505-517, 2008
Signal Modeling and Classification Using a Robust Latent Space Model Based on Distributions
SP Chatzis, DI Kosmopoulos, TA Varvarigou
IEEE Transactions on Signal Processing 56 (3), 949-963, 2008
Forecasting stock market crisis events using deep and statistical machine learning techniques
SP Chatzis, V Siakoulis, A Petropoulos, E Stavroulakis, ...
Expert systems with applications 112, 353-371, 2018
A variational Bayesian methodology for hidden Markov models utilizing Student's-t mixtures
SP Chatzis, DI Kosmopoulos
Pattern Recognition 44 (2), 295-306, 2011
Managing service level agreement contracts in OGSA-based Grids
A Litke, K Konstanteli, V Andronikou, S Chatzis, T Varvarigou
Future Generation Computer Systems 24 (4), 245-258, 2008
Robust fuzzy clustering using mixtures of Student’st distributions
S Chatzis, T Varvarigou
Pattern Recognition Letters 29 (13), 1901-1905, 2008
Numerical optimization using synergetic swarms of foraging bacterial populations
SP Chatzis, S Koukas
Expert Systems with Applications 38 (12), 15332-15343, 2011
A nonparametric Bayesian approach toward robot learning by demonstration
SP Chatzis, D Korkinof, Y Demiris
Robotics and Autonomous Systems 60 (6), 789-802, 2012
A novel corporate credit rating system based on Student’st hidden Markov models
A Petropoulos, SP Chatzis, S Xanthopoulos
Expert Systems with Applications 53, 87-105, 2016
Nonparametric Bayesian multitask collaborative filtering
S Chatzis
Proceedings of the 22nd ACM international conference on Information …, 2013
A conditional random field-based model for joint sequence segmentation and classification
SP Chatzis, DI Kosmopoulos, P Doliotis
Pattern recognition 46 (6), 1569-1578, 2013
Nonparametric mixtures of Gaussian processes with power-law behavior
SP Chatzis, Y Demiris
IEEE transactions on neural networks and learning systems 23 (12), 1862-1871, 2012
Hidden Markov models with nonelliptically contoured state densities
SP Chatzis
IEEE transactions on pattern analysis and machine intelligence 32 (12), 2297 …, 2010
Recurrent latent variable networks for session-based recommendation
SP Chatzis, P Christodoulou, AS Andreou
Proceedings of the 2nd Workshop on Deep Learning for Recommender Systems, 38-45, 2017
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