| 2025 | ITS | An Educational Virtual World System with Gamification Features and LLM Guided NPCs. | Ariadni Barmpari, Eleni Voyiatzaki, Ioannis Hatzilygeroudis |
| 2025 | ITS | Generative AI Agents for Instructional Co-design: A Sequential Agent-Based Approach Using a Low-Code/No-Code Platform. | Dimitrios Tolis, Stylianos Mystakidis, Ioannis Hatzilygeroudis, Konstantinos Siozopoulos |
| 2023 | ICTAI | Generation of Rule-Based Expert Systems with Certainty Factors from Datasets. | Konstantinos Kovas, Ioannis Hatzilygeroudis |
| 2021 | ICTAI | AI Approaches for the Prognosis of the Survival (or Not) of Patients with Bone Metastases. | Ioannis Hatzilygeroudis, Jim Prentzas |
| 2017 | CSEDU | A Collaborative Game for Learning Algorithms. | Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis |
| 2017 | WEBIST | A System for Aspect-based Opinion Mining of Hotel Reviews. | Isidoros Perikos, Konstantinos Kovas, Foteini Grivokostopoulou, Ioannis Hatzilygeroudis |
| 2016 | CSEDU | An Educational Game for Teaching Search Algorithms. | Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis |
| 2016 | CSEDU | Exploring the Educational Capabilities of Social Media in High Schools. | Isidoros Perikos, Foteini Grivokostopoulou, Konstantinos Kovas, Ioannis Hatzilygeroudis |
| 2016 | FlAIRS | Learning Approaches in a 3D Virtual Environment for Learning Energy Generation from Renewable Sources. | Foteini Grivokostopoulou, Isidoros Perikos, Konstantinos Kovas, Ioannis Hatzilygeroudis |
| 2016 | WEBIST | Integrating User's Emotional Behavior for Community Detection in Social Networks. | Andreas Kanavos, Isidoros Perikos, Ioannis Hatzilygeroudis, Athanasios K. Tsakalidis |
| 2016 | WEBIST | A Classifier Ensemble Approach to Detect Emotions Polarity in Social Media. | Isidoros Perikos, Ioannis Hatzilygeroudis |
| 2015 | EANN | Recognize Emotions from Facial Expressions Using a SVM and Neural Network Schema. | Isidoros Perikos, Epaminondas Ziakopoulos, Ioannis Hatzilygeroudis |
| 2015 | ICALT | Teaching Renewable Energy Sources Using 3D Virtual World Technology. | Foteini Grivokostopoulou, Isidoros Perikos, Konstantinos Kovas, Ioannis Hatzilygeroudis |
| 2015 | ICTAI | Estimating the Difficulty of Exercises on Search Algorithms Using a Neuro-Fuzzy Approach. | Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis |
| 2014 | ICTAI | Conversation Emotional Modeling in Social Networks. | Andreas Kanavos, Isidoros Perikos, Pantelis Vikatos, Ioannis Hatzilygeroudis, Christos Makris, Athanasios K. Tsakalidis |
| 2013 | AIED | An Automatic Marking System for Interactive Exercises on Blind Search Algorithms. | Foteini Grivokostopoulou, Ioannis Hatzilygeroudis |
| 2013 | AIED | An Intelligent Tutoring System for Teaching FOL Equivalence. | Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis |
| 2013 | EANN | Recognizing Emotion Presence in Natural Language Sentences. | Isidoros Perikos, Ioannis Hatzilygeroudis |
| 2012 | ICTAI | Controlling the Production of Neuro-symbolic Rules. | Ioannis Hatzilygeroudis, Jim Prentzas |
| 2012 | NeSy | Efficiently Merging Symbolic Rules into Integrated Rules. | Jim Prentzas, Ioannis Hatzilygeroudis |
| 2009 | ISDA | Using Machine Learning Techniques to Improve the Behaviour of a Medical Decision Support System for Prostate Diseases. | Constantinos Koutsojannis, Eman Nabil, Maria Tsimara, Ioannis Hatzilygeroudis |
| 2008 | ICSoft | A Tool for Managing Domain Knowledge in Intelligent Tutoring Systems. | Panayiotis Kyriakou, Ioannis Hatzilygeroudis, John D. Garofalakis |
| 2007 | AIME | PIESYS: A Patient Model-Based Intelligent System for Continuing Hypertension Management. | Constantinos Koutsojannis, Ioannis Hatzilygeroudis |
| 2007 | CBMS | Evaluation of Usability and Assessment Capabilities of an e-Learning System for Nursing Radiation Protection. | Ioannis Hatzilygeroudis, Constantinos Koutsojannis, Nikolaos Papachristou |
| 2007 | FlAIRS | Teaching NL to FOL and FOL to CF Conversions. | Ioannis Hatzilygeroudis |
| 2007 | KES | Using a Neurofuzzy Approach in a Medical Application. | Constantinos Koutsojannis, Ioannis Hatzilygeroudis |
| 2006 | KES | A GA Driven Intelligent System for Medical Diagnosis. | Grigorios N. Beligiannis, Ioannis Hatzilygeroudis, Constantinos Koutsojannis, Jim Prentzas |
| 2006 | KES | Fuzzy-Evolutionary Synergism in an Intelligent Medical Diagnosis System. | Constantinos Koutsojannis, Ioannis Hatzilygeroudis |
| 2004 | ICALT | A Web-Based Education System for Predicate Logic. | Ioannis Hatzilygeroudis, Christos Giannoulis, Constantinos Koutsojannis |
| 2004 | ITS | Knowledge Representation Requirements for Intelligent Tutoring Systems. | Ioannis Hatzilygeroudis, Jim Prentzas |
| 2004 | KES | PASS: An Expert System with Certainty Factors for Predicting Student Success. | Ioannis Hatzilygeroudis, Anthi Karatrantou, Christos Pierrakeas |
| 2004 | KES | FESMI: A Fuzzy Expert System for Diagnosis and Treatment of Male Impotence. | Constantinos Koutsojannis, Ioannis Hatzilygeroudis |
| 2002 | ECAI | Updating a Hybrid Rule Base with Changes to its Symbolic Source Knowledge. | Jim Prentzas, Ioannis Hatzilygeroudis |
| 2002 | ICTAI | Updating a Hybrid Rule Base with New Empirical Source Knowledge. | Jim Prentzas, Ioannis Hatzilygeroudis, Athanasios K. Tsakalidis |
| 2002 | ITS | A Web-Based Intelligent Tutoring System Using Hybrid Rules as Its Representational Basis. | Jim Prentzas, Ioannis Hatzilygeroudis, John D. Garofalakis |
| 2001 | FlAIRS | An Efficient Hybrid Rule Based Inference Engine with Explanation Capability. | Ioannis Hatzilygeroudis, Jim Prentzas |
| 2001 | ICALT | A Web-Based ITS Controlled by a Hybrid Expert System. | Jim Prentzas, Ioannis Hatzilygeroudis, Constantinos Koutsojannis |
| 2000 | FlAIRS | Producing Modular Hybrid Rule Bases for Expert Systems. | Ioannis Hatzilygeroudis, Jim Prentzas |
| 1999 | ICTAI | Neurules: Improving the Performance of Symbolic Rules. | Ioannis Hatzilygeroudis, Jim Prentzas |
| 1994 | ICTAI | The Inheritance Mechanism of a System Integrating Logic in Objects. | Ioannis Hatzilygeroudis, Han Reichgelt |
| 1993 | ICTAI | Knowledge Representation and Reasoning in a System Integration Logic in Objects. | Ioannis Hatzilygeroudis |