Issue Date Title Author(s) Journal 41 May-2012 A Reservoir-driven non-stationary hidden markov model Demiris, Yiannis Pattern recognition 42 5-Mar-2012 Visual Workflow Recognition Using a Variational Bayesian Treatment of Multistream Fused Hidden Markov Models Chatzis, Sotirios P. IEEE transactions on circuits and systems for video technology 43 Jan-2012 The Copula Echo State Network Chatzis, Sotirios P. Pattern Recognition 44 2012 A Coupled Indian Buffet Process Model for Collaborative Filtering Chatzis, Sotirios P. Journal of Machine Learning Research 45 Nov-2011 Numerical optimization using synergetic swarms of foraging bacterial populations Chatzis, Sotirios P. Expert systems with applications 46 Sep-2011 Echo state Gaussian process Demiris, Yiannis IEEE transactions on neural networks and learning systems 47 Aug-2011 Deformable probability maps: probabilistic shape and appearance-based object segmentation Chatzis, Sotirios P. Computer Vision and Image Understanding 48 Jul-2011 A fuzzy c-means-type algorithm for clustering of data with mixed numeric and categorical attributes employing a probabilistic dissimilarity functional Chatzis, Sotirios P. Expert systems with applications 49 Feb-2011 A variational Bayesian methodology for hidden Markov models utilizing Student's-t mixtures Chatzis, Sotirios P. Pattern recognition 50 1-Dec-2010 A method for training finite mixture models under a fuzzy clustering principle Chatzis, Sotirios P. Fuzzy sets and systems 51 Sep-2010 Robust visual behavior recognition Chatzis, Sotirios P. IEEE Signal Processing Magazine 52 Jun-2010 The infinite hidden Markov random field model Tsechpenakis, Gabriel IEEE Transactions on Neural Networks 53 2010 Hidden Markov models with nonelliptically contoured state densities Chatzis, Sotirios P. IEEE Transactions on Pattern Analysis and Machine Intelligence 54 Sep-2009 Robust Sequential Data Modeling Using an Outlier Tolerant Hidden Markov Model Chatzis, Sotirios P. IEEE Transactions on Pattern Analysis and Machine Intelligence 55 Jun-2009 Factor analysis latent subspace modeling and robust fuzzy clustering using t-distributions Chatzis, Sotirios P. IEEE Transactions on Fuzzy Systems 56 Mar-2009 Vision-based production of personalized video Chatzis, Sotirios P. Signal Processing: Image Communication 57 Oct-2008 Robust fuzzy clustering using mixtures of Student’s-t distributions Dr Chatzis, Sotirios P. Pattern Recognition Letters 58 Mar-2008 Signal modeling and classification using a robust latent space model based on t distributions Chatzis, Sotirios P. IEEE Transactions on Signal Processing 59 2008 A fuzzy clustering approach toward Hidden Markov random field models for enhanced spatially constrained image segmentation Chatzis, Sotirios P. IEEE Transactions on Fuzzy Systems 60 2008 Managing service level agreement contracts in OGSA-based Grids Chatzis, Sotirios P. Future Generation Computer Systems 
