Sotirios Chatzis

Orcid: 0000-0002-4956-4013

According to our database1, Sotirios Chatzis authored at least 110 papers between 2006 and 2024.

Collaborative distances:
  • Dijkstra number2 of four.
  • Erdős number3 of four.

Timeline

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Bibliography

2024
Transformers with Stochastic Competition for Tabular Data Modelling.
CoRR, 2024

Continual Deep Learning on the Edge via Stochastic Local Competition among Subnetworks.
CoRR, 2024

2023
Continuous authentication with feature-level fusion of touch gestures and keystroke dynamics to solve security and usability issues.
Comput. Secur., September, 2023

DISCOVER: Making Vision Networks Interpretable via Competition and Dissection.
Proceedings of the Advances in Neural Information Processing Systems 36: Annual Conference on Neural Information Processing Systems 2023, 2023

A New Dataset for End-to-End Sign Language Translation: The Greek Elementary School Dataset.
Proceedings of the IEEE/CVF International Conference on Computer Vision, 2023

2022
Rethinking Bayesian Learning for Data Analysis: The art of prior and inference in sparsity-aware modeling.
IEEE Signal Process. Mag., 2022

Key factors driving the adoption of behavioral biometrics and continuous authentication technology: an empirical research.
Inf. Comput. Secur., 2022

BioGames: a new paradigm and a behavioral biometrics collection tool for research purposes.
Inf. Comput. Secur., 2022

Stochastic Deep Networks with Linear Competing Units for Model-Agnostic Meta-Learning.
Proceedings of the International Conference on Machine Learning, 2022

A Deep Learning Approach for Dynamic Balance Sheet Stress Testing.
Proceedings of the 3rd ACM International Conference on AI in Finance, 2022

Competing Mutual Information Constraints with Stochastic Competition-Based Activations for Learning Diversified Representations.
Proceedings of the Thirty-Sixth AAAI Conference on Artificial Intelligence, 2022

2021
Re-constructing the interbank links using machine learning techniques. An application to the Greek interbank market.
Intell. Syst. Appl., 2021

Behavioral biometrics & continuous user authentication on mobile devices: A survey.
Inf. Fusion, 2021

Stochastic Local Winner-Takes-All Networks Enable Profound Adversarial Robustness.
CoRR, 2021

Dialog Speech Sentiment Classification for Imbalanced Datasets.
Proceedings of the Speech and Computer - 23rd International Conference, 2021

Stochastic Transformer Networks with Linear Competing Units: Application to end-to-end SL Translation.
Proceedings of the 2021 IEEE/CVF International Conference on Computer Vision, 2021

Local Competition and Stochasticity for Adversarial Robustness in Deep Learning.
Proceedings of the 24th International Conference on Artificial Intelligence and Statistics, 2021

2020
Gated Mixture Variational Autoencoders for Value Added Tax audit case selection.
Knowl. Based Syst., 2020

Local Competition and Uncertainty for Adversarial Robustness in Deep Learning.
CoRR, 2020

Variational Conditional-Dependence Hidden Markov Models for Human Action Recognition.
CoRR, 2020

Variational Bayesian Sequence-to-Sequence Networks for Memory-Efficient Sign Language Translation.
Proceedings of the Advances in Visual Computing - 15th International Symposium, 2020

A Self-Attentive Emotion Recognition Network.
Proceedings of the 2020 IEEE International Conference on Acoustics, 2020

Power-law mixtures of bayesian forests for value added tax audit case selection.
Proceedings of the ICAIF '20: The First ACM International Conference on AI in Finance, 2020

2019
t-Exponential Memory Networks for Question-Answering Machines.
IEEE Trans. Neural Networks Learn. Syst., 2019

Nonparametric Bayesian Deep Networks with Local Competition.
Proceedings of the 36th International Conference on Machine Learning, 2019

2018
Leveraging Statistical Machine Learning to Address Failure Localization in Optical Networks.
JOCN, 2018

Latent subspace modeling of sequential data under the maximum entropy discrimination framework.
Neurocomputing, 2018

Deep learning with <i>t</i>-exponential Bayesian kitchen sinks.
Expert Syst. Appl., 2018

Forecasting stock market crisis events using deep and statistical machine learning techniques.
Expert Syst. Appl., 2018

Quantum Statistics-Inspired Neural Attention.
CoRR, 2018

Amortized Context Vector Inference for Sequence-to-Sequence Networks.
CoRR, 2018

Deep learning with t-exponential Bayesian kitchen sinks.
CoRR, 2018

The Good, the Bad and the Bait: Detecting and Characterizing Clickbait on YouTube.
Proceedings of the 2018 IEEE Security and Privacy Workshops, 2018

On learning bandwidth allocation models for time-varying traffic in flexible optical networks.
Proceedings of the 2018 International Conference on Optical Network Design and Modeling, 2018

Charging Policies for PREYs used for Service Delivery: A Reinforcement Learning Approach.
Proceedings of the 21st International Conference on Intelligent Transportation Systems, 2018

A Recurrent Latent Variable Model for Supervised Modeling of High-Dimensional Sequential Data.
Proceedings of the 2018 Innovations in Intelligent Systems and Applications, 2018

Indian Buffet Process Deep Generative Models for Semi-Supervised Classification.
Proceedings of the 2018 IEEE International Conference on Acoustics, 2018

2017
Performance Analysis of a Data-Driven Quality-of-Transmission Decision Approach on a Dynamic Multicast-Capable Metro Optical Network.
JOCN, 2017

A hidden Markov model with dependence jumps for predictive modeling of multidimensional time-series.
Inf. Sci., 2017

Asymmetric deep generative models.
Neurocomputing, 2017

A stacked generalization system for automated FOREX portfolio trading.
Expert Syst. Appl., 2017

Recurrent Latent Variable Networks for Session-Based Recommendation.
Proceedings of the 2nd Workshop on Deep Learning for Recommender Systems, 2017

Deep Network Regularization via Bayesian Inference of Synaptic Connectivity.
Proceedings of the Advances in Knowledge Discovery and Data Mining, 2017

Deep Bayesian Matrix Factorization.
Proceedings of the Advances in Knowledge Discovery and Data Mining, 2017

A probabilistic approach for failure localization.
Proceedings of the 2017 International Conference on Optical Network Design and Modeling, 2017

A Variational Recurrent Neural Network for Session-Based Recommendations using Bayesian Personalized Ranking.
Proceedings of the Information Systems Development: Advances in Methods, Tools and Management, 2017

Recurrent latent variable conditional heteroscedasticity.
Proceedings of the 2017 IEEE International Conference on Acoustics, 2017

2016
Software defect prediction using doubly stochastic Poisson processes driven by stochastic belief networks.
J. Syst. Softw., 2016

Maximum entropy discrimination factor analyzers.
Neurocomputing, 2016

A Nonstationary Hidden Markov Model with Approximately Infinitely-Long Time-Dependencies.
Int. J. Artif. Intell. Tools, 2016

A novel corporate credit rating system based on Student's-t hidden Markov models.
Expert Syst. Appl., 2016

A data-driven QoT decision approach for multicast connections in metro optical networks.
Proceedings of the 2016 International Conference on Optical Network Design and Modeling, 2016

Users' Attitudes on Mobile Devices: Can Users' Practices Protect their Sensitive Data?
Proceedings of the 10th Mediterranean Conference on Information Systems, 2016

2015
A Latent Manifold Markovian Dynamics Gaussian Process.
IEEE Trans. Neural Networks Learn. Syst., 2015

Maximum Entropy Discrimination Poisson Regression for Software Reliability Modeling.
IEEE Trans. Neural Networks Learn. Syst., 2015

Sparse Bayesian Recurrent Neural Networks.
Proceedings of the Machine Learning and Knowledge Discovery in Databases, 2015

A Nonparametric Bayesian Approach toward Stacked Convolutional Independent Component Analysis.
Proceedings of the 2015 IEEE International Conference on Computer Vision, 2015

Inducing Space Dirichlet Process Mixture Large-Margin Entity RelationshipInference in Knowledge Bases.
Proceedings of the 24th ACM International Conference on Information and Knowledge Management, 2015

2014
Gaussian Process-Mixture Conditional Heteroscedasticity.
IEEE Trans. Pattern Anal. Mach. Intell., 2014

A Nonparametric Bayesian Approach Toward Stacked Convolutional Independent Component Analysis.
CoRR, 2014

Maximum Entropy Discrimination Denoising Autoencoders.
CoRR, 2014

Developing Public Transport Network systems: The DIANA approach.
Proceedings of the 18th Panhellenic Conference on Informatics, 2014

A Partially-Observable Markov Decision Process for Dealing with Dynamically Changing Environments.
Proceedings of the Artificial Intelligence Applications and Innovations, 2014

A Non-stationary Infinite Partially-Observable Markov Decision Process.
Proceedings of the Artificial Neural Networks and Machine Learning - ICANN 2014, 2014

Echo-State Conditional Restricted Boltzmann Machines.
Proceedings of the Twenty-Eighth AAAI Conference on Artificial Intelligence, 2014

Dynamic Bayesian Probabilistic Matrix Factorization.
Proceedings of the Twenty-Eighth AAAI Conference on Artificial Intelligence, 2014

2013
A conditional random field-based model for joint sequence segmentation and classification.
Pattern Recognit., 2013

A Markov random field-regulated Pitman-Yor process prior for spatially constrained data clustering.
Pattern Recognit., 2013

The Infinite-Order Conditional Random Field Model for Sequential Data Modeling.
IEEE Trans. Pattern Anal. Mach. Intell., 2013

A latent variable Gaussian process model with Pitman-Yor process priors for multiclass classification.
Neurocomputing, 2013

Corrigendum to "Maximum-margin classification of sequential data with infinitely-long temporal dependencies" [Expert Systems with Applications 40 (11) (2013) 4519-4527].
Expert Syst. Appl., 2013

Margin-maximizing classification of sequential data with infinitely-long temporal dependencies.
Expert Syst. Appl., 2013

Infinite Markov-Switching Maximum Entropy Discrimination Machines.
Proceedings of the 30th International Conference on Machine Learning, 2013

Nonparametric bayesian multitask collaborative filtering.
Proceedings of the 22nd ACM International Conference on Information and Knowledge Management, 2013

2012
A Quantum-Statistical Approach Toward Robot Learning by Demonstration.
IEEE Trans. Robotics, 2012

Nonparametric Mixtures of Gaussian Processes With Power-Law Behavior.
IEEE Trans. Neural Networks Learn. Syst., 2012

Visual Workflow Recognition Using a Variational Bayesian Treatment of Multistream Fused Hidden Markov Models.
IEEE Trans. Circuits Syst. Video Technol., 2012

A nonparametric Bayesian approach toward robot learning by demonstration.
Robotics Auton. Syst., 2012

A possibilistic clustering approach toward generative mixture models.
Pattern Recognit., 2012

A reservoir-driven non-stationary hidden Markov model.
Pattern Recognit., 2012

The copula echo state network.
Pattern Recognit., 2012

A Coupled Indian Buffet Process Model for Collaborative Filtering.
Proceedings of the 4th Asian Conference on Machine Learning, 2012

A spatially-constrained normalized Gamma process prior.
Expert Syst. Appl., 2012

The echo state conditional random field model for sequential data modeling.
Expert Syst. Appl., 2012

A sparse nonparametric hierarchical Bayesian approach towards inductive transfer for preference modeling.
Expert Syst. Appl., 2012

A Mixture Gaussian Process Conditional Heteroscedasticity Model with Power-Law Nature
CoRR, 2012

The Kernel Pitman-Yor Process
CoRR, 2012

A Spatially-Constrained Normalized Gamma Process for Data Clustering.
Proceedings of the Artificial Intelligence Applications and Innovations, 2012

2011
Echo State Gaussian Process.
IEEE Trans. Neural Networks, 2011

A variational Bayesian methodology for hidden Markov models utilizing Student's-t mixtures.
Pattern Recognit., 2011

Numerical optimization using synergetic swarms of foraging bacterial populations.
Expert Syst. Appl., 2011

A fuzzy c-means-type algorithm for clustering of data with mixed numeric and categorical attributes employing a probabilistic dissimilarity functional.
Expert Syst. Appl., 2011

Deformable probability maps: Probabilistic shape and appearance-based object segmentation.
Comput. Vis. Image Underst., 2011

The One-Hidden Layer Non-parametric Bayesian Kernel Machine.
Proceedings of the IEEE 23rd International Conference on Tools with Artificial Intelligence, 2011

2010
The infinite hidden Markov random field model.
IEEE Trans. Neural Networks, 2010

Robust Visual Behavior Recognition.
IEEE Signal Process. Mag., 2010

Hidden Markov Models with Nonelliptically Contoured State Densities.
IEEE Trans. Pattern Anal. Mach. Intell., 2010

A method for training finite mixture models under a fuzzy clustering principle.
Fuzzy Sets Syst., 2010

Which brainstem cells generate the respiration cycles?
Proceedings of the 2010 IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 2010

2009
Factor Analysis Latent Subspace Modeling and Robust Fuzzy Clustering Using t -Distributions.
IEEE Trans. Fuzzy Syst., 2009

Vision-based production of personalized video.
Signal Process. Image Commun., 2009

Robust Sequential Data Modeling Using an Outlier Tolerant Hidden Markov Model.
IEEE Trans. Pattern Anal. Mach. Intell., 2009

2008
Signal Modeling and Classification Using a Robust Latent Space Model Based on t Distributions.
IEEE Trans. Signal Process., 2008

A Fuzzy Clustering Approach Toward Hidden Markov Random Field Models for Enhanced Spatially Constrained Image Segmentation.
IEEE Trans. Fuzzy Syst., 2008

Robust fuzzy clustering using mixtures of Student's-t distributions.
Pattern Recognit. Lett., 2008

Managing service level agreement contracts in OGSA-based Grids.
Future Gener. Comput. Syst., 2008

A robust approach towards sequential data modeling and its application in automatic gesture recognition.
Proceedings of the IEEE International Conference on Acoustics, 2008

2007
A content-based image retrieval scheme allowing for robust automatic personalization.
Proceedings of the 6th ACM International Conference on Image and Video Retrieval, 2007

2006
Video Representation and Retrieval Using Spatio-temporal Descriptors and Region Relations.
Proceedings of the Artificial Neural Networks, 2006

A Cross Media Platform for Personalized Leisure & Entertainment: The POLYMNIA Approach.
Proceedings of the Second International Conference on Automated Production of Cross Media Content for Multi-Channel Distribution, 2006


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