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Dr. Ioannis Hatzilygeroudis
I. Hatzilygeroudis
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Dr. Ioannis Hatzilygeroudis
Professor, Department of Computer Engineering & Informatics, University of Patras

Cooperating Teaching Staff
Artificial Intelligence and Applications Unit
Hellenic Open University (HOU)
HELLAS (GREECE)
IEEE Senior Member
Professor
Department of Computer Engineering & Informatics
University of Patras
26504 Patras, HELLAS (GREECE)
Tel: +30-2610-996937
Fax: +30-2610-960374
Email: ihatz [at] ceid [dot] upatras [dot] gr

CV Outline

Personal Information

  • Date of birth: 29 May 1956
  • Marital status: Married, 6 children
  • Nationality: Greek
  • Citizenship: Greek
  • Religion: Orthodox Christian

Education

  • First degree: Diploma of Mehanical & Electrical Engineering (specializing in Electronics Engineering), NTUA (National Technical University of Athens), Hellas(Greece), 1979.
  • Other first degree: BSc in Theology, UOA (University of Athens), Hellas(Greece), 1987.
  • MSc: MSc in Information Technology, University of Nottingham, UK, 1989.
  • PhD: University of Nottingham, 1992. Thesis title: "Integrating Logic and Objects for Knowledge Representation and Reasoning".
  • Pedagogical studies: Certficate of Pedagogical Studies, PATES, SELETE, Hellas (Greece), 1983.

Professional-Teaching Activities

  • 1982-83 and 1983-84: Laboratory Professor, Dept. of Electronics, TEI (Technological Educational Institute) of Athens, Hellas (Greece).
  • 1984-85 to 1991-92 (with a 3&1/2 years brake for postgrad studies): Secondary Education Teacher, specializing in Electrical Engineering, Hellas (Greece).
  • 1984-85: Application Professor (part-time), Dept. of Electrology, TEI of Kozani, Hellas (Greece).
  • 1987-88: Application Professor (part-time), Dept. of Electrology, TEI of Chalkida, Hellas (Greece).
  • 1990-91 and 1991-92 (one term in each): Tutor for MSc students, University of Nottingham, UK.
  • 1992-93 to 1994-95: On secondment at the Dept. of Computer Engineering & Informatics, University of Patras, Hellas (Greece).
  • 1995-96 to 2000-01: Secondary Education Teacher, specializing in Informatics, 13o E.L. of Patras, Hellas (Greece).
  • 1995-96 to now: Senior Researcher, Laboratory of Graphics, Multimedia and GIS, Dept. of Computer Engineering & Informatics, University of Patras, Hellas (Greece).
  • 1997-98 to 1999-2000: Teaching Assistant Professor (P.D. 407/80, part-time), Dept. of Computer Engineering & Informatics, University of Patras, Hellas (Greece).
  • From Sept. 2000 to now: Consultant Professor, HOU (Hellenic Open University), Patras, Hellas (Greece).
  • From June 2001 to May 2006: Lecturer at the Dept. of Computer Engineering & Informatics, University of Patras, Hellas (Greece).
  • From May 2006 to October 2009: Assistant Professor at the Dept. of Computer Engineering & Informatics, University of Patras, Hellas (Greece).
  • From October 2009 to August 2012: Assistant Professor (tenure position) at the Dept. of Computer Engineering & Informatics, University of Patras, Hellas (Greece).
  • From August 2012 to December 2017: Associate Professor at the Dept. of Computer Engineering & Informatics, University of Patras, Hellas (Greece).
  • From December 2017 to now: Professor at the Dept. of Computer Engineering & Informatics, University of Patras, Hellas (Greece).

Activities

Research Interests

  • Knowledge Representation (Emphasis on Integrated/Hybrid KR Schemes)
  • Knowledge-Based/Expert Systems (Emphasis on Integrated/Hybrid Systems)
  • Theorem Proving (Classical FOPC)
  • Intelligent Decision Support Systems (Emphasis on Medical Systems)
  • Intelligent Education Systems
  • Semantic Web

Memberships

  • EETN (Hellenic Association for Artificial Intelligence)
  • AAAI (American Association for Artificial Intelligence) (Member No 34844)
  • IEEE (Institute of Electrical and Electronic Engineers) (Member No 40133157)
  • ACM (Association for Computing Machinery) (Member No 1232933)

Publications


Books     Journals    Conferences    Workshops

Books

  • I. Hatzilygeroudis, "Data Structures" (Revised version), HOU (Hellenic Open University), Patras, 2008 (in Greek).
  • I. Hatzilygeroudis & C. Koutsojannis, "Intelligent Programming", University Lectures, University of Patras, 2005 (in Greek).
  • I. Hatzilygeroudis, "Knowledge Representation and Automated Reasoning", University Lectures, University of Patras, 2004 (in Greek).
  • D. Sofotassios, P. Spirakis, V. Triantafillou, I. Hatzilygeroudis, "Production Planning and Control", GUTEMBERG & CTI Press, 2002 (in Greek).
  • I. Hatzilygeroudis, "Data Structures", HOU (Hellenic Open University), Patras, 2000 (in Greek).


Edited Volumes

  • Ioannis Hatzilygeroudis, Isidoros Perikos, Foteini Grivokostopoulou (Editors). Advances in Integrations of Intelligent Methods. Smart Innovation, Systems and Technologies, Springer, 2020. https://www.springer.com/gp/book/9789811519178
  • Ioannis Hatzilygeroudis, Vasile Palade, Isidoros Perikos: Proceedings of the 8th International Workshop on Combinations of Intelligent Methods and Applications co-located with 30th International Conference on Artificial Intelligence Tools (ICTAI 2018), Volos, Greece, November 7, 2018. CEUR Workshop Proceedings 2252.
  • Sa, P.K., Bakshi, S., Hatzilygeroudis, I.K., Sahoo, M.N. (Editors). Recent Findings in Intelligent Computing Techniques, Proceedings of the 5th ICACNI 2017, Vol. 1,2 and 3. Advances in Intelligent Systems and Computing, Springer, 2019.
  • Ioannis Hatzilygeroudis and Vasile Palade (Editors). Advances in Hybridization of Intelligent Methods-Models, Systems and Applications. Smart Innovation, Systems and Technologies 85 (SIST-85), Springer, 2018. https://www.springer.com/gp/book/9783319667898
  • Ioannis Hatzilygeroudis, Vasile Palade and Jim Prentzas (Editors). Advances in Combining Intelligent Methods, Postproceedings of the 5th International Workshop, Vietri sul Mare, Italy, November 2015. Intelligent Systems Reference Library, Springer, 2017. http://www.springer.com/gp/book/9783319461991
  • Ioannis Hatzilygeroudis, Vasile Palade and Jim Prentzas (Editors). Combinations of Intelligent Methods and Applications, Proceedings of the 4th International Workshop, CIMA 2014, Cyprus, November 2014. Smart Innovation, Systems and Technologies 46 (SIST-46), Springer, 2016. http://www.springer.com/us/book/9783319268583
  • Ioannis Hatzilygeroudis and Vasile Palade (Editors). Combinations of Intelligent Methods and Applications, Proceedings of the 3rd International Workshop, CIMA 2012, France, October 2012. Smart Innovation, Systems and Technologies 23 (SIST-23), Springer, 2013. http://www.springer.com/us/book/9783642366505
  • Ioannis Hatzilygeroudis and Jim Prentzas (Editors). Combinations of Intelligent Methods and Applications, Proceedings of the 2nd International Workshop, CIMA 2010, France, October 2010. Smart Innovation, Systems and Technologies 8 (SIST-8), Springer, 2011. http://www.springer.com/us/book/9783642196171
  • Ioannis Hatzilygeroudis and Constantinos Koutsojannis (Guest Editors), International Journal on Hybrid Intelligent Systems (IJHIS), Special Issue on "Selected papers from CIMA'08 (1st International Workshop on Combinations of Intelligent Methods and Applications)", December 2009.
  • Ioannis Hatzilygeroudis (Guest Editor), International Journal on AI Tools (IJAIT), Special Issue on "Selected Papers from the 19th Annual IEEE International Conference (ICTAI-2007)", 17(5), October 2008.
  • Ioannis Hatzilygeroudis, Constantinos Koutsojannis and Vasile Palade (Eds). Proceedings of the 1st International Workshop on Combinations of Intelligent Methods and Applications (CIMA’08), July 22, Patras, Greece as CEUR Workshop Proceedings, Vol. 375, ISSN 1613-0073, 2008.
  • Anna Esposito, Nikolaos Bourbakis, Nikolaos Avouris and Ioannis Hatzilygeroudis (Eds). Verbal and Nonverbal Features of Human-Human and Human-Machine Interaction: COST Action 2102 International Conference Proceedings, Patras, Greece, October 29-31, 2007, Springer, 2008.
  • Ioannis Hatzilygeroudis, Alvaro Ortigosa, and Maria D. Rodriguez-Moreno (Editors). Proceedings of the 2007 workshop on REpresentation models and Techniques for Improving e-Learning: Bringing Context into the Web-based Education (ReTIeL'07), Roskilde, Denmark, August 2007, University of Roskilde, Computer Science Research Report No 111. Also published in CEUR Workshop Proceedings, Vol. 270, ISSN 1613-0073.
  • I. Hatzilygeroudis, Special Issue on "Integrating Intelligent and Adaptive Hypermedia Techniques in Web-Based Education Systems", International Journal of Continuing Engineering Education and Life-Long Learning (IJCEELL), 17(4-5), 2007.
  • I. Hatzilygeroudis, Special Issue on "AI Techniques in Web-Based Educational Systems", International Journal on AI Tools, 13(2), June 2004.


Contributions in Edited Volumes

  • Konstantinos Chatzilygeroudis, Ioannis Hatzilygeroudis and Isidoros Perikos, Machine Learning Basics, in Parisa Eslambolchilar, Mark Dunlop and Andreas Komninos (Editors) “Intelligent Computing for Interactive System Design: Statistics, Digital Signal Processing and Machine Learning in practice”, ACM Books, 2021. https://dl.acm.org/doi/10.1145/3447404.3447414
  • Zuzana Palkova and Ioannis Hatzilygeroudis, “Virtual Reality and Its Applications in Vocational Education and Training”, in Y. A. Zhang, D. Cristol (eds.), Handbook of Mobile Teaching and Learning, Springer-Verlag GmbH Germany, part of Springer Nature 2019. https://link.springer.com/referenceworkentry/10.1007%2F978-981-13-2766-7_88
  • Panagiotis Giannopoulos, Isidoros Perikos and Ioannis Hatzilygeroudis, "Deep Learning Approaches for Facial Emotion Recognition: A Case Study on FER-2013", In Advances in Hybridization of Intelligent Methods, pp. 1-16, Springer, 2018.
  • Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis, “Difficulty Estimation of Exercises on Tree-Based Search Algorithms Using Neuro-fuzzy and Neuro-symbolic Approaches” in Ioannis Hatzilygeroudis, Vasile Palade and Jim Prentzas (Editors). Advances in Combining Intelligent Methods, Postproceedings of the 5th International Workshop, CIMA 2015, Vietri sul Mare, Italy, November 2015. Intelligent Systems Reference Library, Springer, 2016, 75-92.
  • Foteini Grivokostopoulou, Ioannis Hatzilygeroudis, Isidoros Perikos, “An Intelligent System for Learning First Order Logic to Clause Form Conversion”, in Tomayess Issa, Pedro Isaias & Piet Kommers (Eds), “Multicultural Awareness and Technology in Higher Education: Global Perspectives”, IGI Global, 2014, 265-284.
  • Jim Prentzas and Ioannis Hatzilygeroudis, “Fuzzy and Neuro-Symbolic Approaches in Personal Credit Scoring: Assessment of Bank Loan Applicants”, in C. Faucher and L. C. Jain (Eds), Innovations in Intelligent Machines-4, Studies in Computational Intelligence 514, 2014, 319-339, Springer.
  • Themistoklis Chronopoulos and Ioannis Hatzilygeroudis, "The Design of a Teacher-Driven IntelligentAgent System for Supervising Lessons in LAMS", in Daradoumis etal (Eds), Intelligent Adaptation and Personalization Techniques in Computer-Supported Collaborative Learning, Studies in Computational Intelligence, 2012, Volume 408/2012,211-238, DOI: 10.1007/978-3-642-28586-8_10
  • J. Prentzas and I. Hatzilygeroudis, "Neurules-A Type of Neuro-Symbolic Rules: An Overview", in Ioannis Hatzilygeroudis and Jim Prentzas (Editors). Combinations of Intelligent Methods and Applications, Proceedings of the 2nd International Workshop, CIMA 2010, France, October 2010. Smart Innovation, Systems and Technologies 8 (SIST-8), Springer, 2011, 145-166. (pdf)
  • J. Prentzas and I. Hatzilygeroudis, "Techniques, technologies and patents related to intelligent educational systems", in George D. Magoulas (Ed), "E-Infrastructures and Technologies for Lifelong Learning: Next Generation Environments", IGI Global, 2011. (pdf)
  • J. Prentzas and I. Hatzilygeroudis, "Case-Based Reasoning Integrations: Approaches and Applications", in Antonia M. Leeland (Ed), “Case-Based Reasoning: Processes, Suitability and Applications”, Nova Publishers, 2011. (pdf)
  • C. Koutsojannis, A. Koupparis and I. Hatzilygeroudis, "HEPAR: An Intelligent System for Hepatitis Prognosis and Liver Transplantation Decision Support", in C. Koutsojannis and S. Sirmakessis (Eds), “Tools and Applications with Artificial Intelligence”, Studies in Computational Intelligence, Vol. 166, Springer-Verlag, 2009, 163-180. (pdf)
  • C. Koutsojannis and I. Hatzilygeroudis, "PIESYS: A patient model-based intelligent system for continuing hypertension management", in David Riano (Ed), “Knowledge Management for Health Care Procedures”, From Knowledge to Global Care, AIME 2007 Workshop K4CARE 2007, Amsterdam, The Netherlands, July 7, 2007, Revised Selected Papers, LNAI 4924, Springer-Verlag, 2008, 137-148. (pdf)
  • I. Hatzilygeroudis, C. Koutsojannis and N. Papachristou, "Improving The Adaptiveness of an e-Learning System", In M. Wallace, M. C. Angelides and P. Mylonas (Eds.), "Advances In Semantic Media Adaptation And Personalisation", Studies In Computational Intelligence, Springer-Verlag, 2008, 177-198. (pdf)
  • I. Hatzilygeroudis and J. Prentzas, "Knowledge Representation in Intelligent Educational Systems", in Z. Ma (Ed), "Web-Based Intelligent e-Learning Systems: Technologies and Applications", Idea Group Inc., 2006, 175-192.(pdf)
  • I. Hatzilygeroudis, J. Prentzas, "Neurules: Integrating Symbolic Rules and Neurocomputing", in D. Fotiades and S. Nikolopoulos (Eds), Advances in Informatics, World Scientific Pub., 2000, 122-133. (pdf)
  • I. Hatzilygeroudis, D. Sofotassios, N. Dendris, V. Triantafillou, A. Tsakalidis and P. Spirakis, "MRP II-Based Production Management Using Intelligent Decision Making ", in A. Drexl and A. Kimms (Eds), "Beyond Manufacturing Resource Planning (MRP II)-Advanced Models and Methods for Production Planning", Springer-Verlag, 1998, 379-411. (pdf)
  • I. Hatzilygeroudis, D. Sofotassios, N. Dendris, P. Spirakis and A. Tsakalidis, "Architectural Aspects of an Intelligent DSS for Flow Shop Prodution Control", J. Mamede and C. Pinto-Ferreira (Eds.), Applications of Artificial Intelligence-Expert Systems, Robots and Vision Systems, Fuzzy Logic and Neural Networks, Advanced Manufacturing Forum 1 (1996) 75-84.

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Papers/Reports in International Journals/Magazines

  • Kalogeropoulou C., Zampakis P., Tsimara M., Panagopoulos K., Hatzilygeroudis I., Koutsojannis, C. Intelligent System for Preoperative Evaluation of Parathyroid Gland for Surgical Intervention Prediction, Journal of Clinical and Experimental Radiology, 2019, 2:1.
  • Andreas Kanavos, Isidoros Perikos, Ioannis Hatzilygeroudis, Athanasios K. Tsakalidis: Emotional community detection in social networks. Computers & Electrical Engineering 65: 449-460, 2018. https://www.sciencedirect.com/science/article/abs/pii/S00457906173289754
  • Jim Prentzas and Ioannis Hatzilygeroudis, “Using Clustering Algorithms to Improve the Production of Symbolic-Neural Rule Bases from Empirical Data”, International Journal on Artificial Intelligence Tools, March 2018.https://www.worldscientific.com/doi/abs/10.1142/S0218213018500021
  • Andreas Kanavos, Isidoros Perikos, Ioannis Hatzilygeroudis and Athanasios Tsakalidis, “Emotional Community Detection in Social Networks”, Computers and Electrical Engineering, 2017. https://doi.org/10.1016/j.compeleceng.2017.09.011
  • Isidoros Perikos, Foteini Grivokostopoulou and Ioannis Hatzilygeroudis, "Assistance and Feedback Mechanism in an Intelligent Tutoring System for Teaching Conversion of Natural Language into Logic", International Journal of Artificial Intelligence in Education (IJAIED), Springer 2017. [DOI: 10.1007/s40593-017-0139-y]
  • Foteini Grivokostopoulou, Isidoros Perikos and Ioannis Hatzilygeroudis, "An Educational System for Learning Search Algorithms and Automatically Assessing Student Performance", International Journal of Artificial Intelligence in Education (IJAIED), 27(1), 207-240, Springer 2017. [DOI:10.1007/s40593-016-0116-x]
  • Isidoros Perikos, Foteini Grivokostopoulou, Konsatntinos Kovas and Ioannis Hatzilygeroudis, "Automatic Estimation of Exercises Difficulty Levels in a Tutoring System for Teaching the Conversion of Natural Language into First Order Logic", Expert Systems (ES), 33(6), 569-580, Wiley 2016. [DOI: 10.1111/exsy.12182]
  • Isidoros Perikos and Ioannis Hatzilygeroudis, “Recognizing Emotions in Text Using Ensemble of Classifiers”, Engineering Applications of Artificial Intelligence (EAAI) Volume 51, May 2016, Pages 191–201.
  • Jim Prentzas and Ioannis Hatzilygeroudis, "Assessment of Life Insurance Applications: An Approach Integrating Neuro-Symbolic Rule-Based with Case-Based Reasoning", Expert Systems, Volume 33(2), 145–160, April 2016.
  • Ioannis Hatzilygeroudis and Jim Prentzas, “Symbolic-neural rule based reasoning and explanation”, Expert Systems with Applications (ESWA) 42 (2015) 4595-4609.
  • Jim Prentzas and Ioannis Hatzilygeroudis, “Improving efficiency of merging symbolic rules into integrated rules: splitting methods and mergability criteria”, Expert Systems 2015 32(2) 244-260.
  • Foteini Grivokostopoulou, Ioannis Hatzilygeroudis, Isidoros Perikos, “Teaching assistance and automatic difficulty estimation in converting first order logic to clause form”, Artificial Intelligence Review (AIR), 2014, 42: 347-367.
  • Constantinos Koutsojannis, Chrysa Lithari and Ioannis Hatzilygeroudis, “Managing Urinary Incontinence Through Hand-Held Real-Time Decision Support Aid”, Computer Methods and Programs in Biomedicine, 2012, 107(1):84-9
  • Themistoklis Chronopoulos, Ioannis Hatzilygeroudis, Isidoros Perikos, Kostantinos Kovas, “A web-based example-tracing tutor for formalising sentences in First Order Logic”,  International Journal of Engineering Intelligent Systems (EIS), 18(3/4), 2010. (pdf)
  • P. Kyriakou, I. Hatzilygeroudis, J. Garofalakis, “A Tool for Managing Domain Knowledge and Helping Tutors in Intelligent Tutoring Systems”, Journal of Universal Computer Science (JUCS), Special Issue on Advances in Authoring of Adaptive Web-based Systems, 16(19) (2010) 2841-2861. (pdf)
  • I. Hatzilygeroudis, J. Prentzas, “Integrated Rule-Based Learning and Inference”, IEEE Transactions on Knowledge and Data Engineering (TKDE), 22(11), 1549-1562, 2010. (pdf)
  • J. Prentzas, I. Hatzilygeroudis, “Combinations of Case-Based Reasoning with Other Intelligent Methods”, International Journal of Hybrid Intelligent Systems (IJHIS) 6(4) 2009, 189-209. (pdf)
  • I. Hatzilygeroudis, J. Prentzas, “A Survey on Recent Patents Regarding Intelligent Educational Systems”, Recent Patents on Computer Science, Bentham Science Publishers Ltd., 2(3), pp. 214-222, 2009. (pdf)
  • J. Prentzas and I. Hatzilygeroudis, "Incrementally Updating a Hybrid Rule Base Based on Empirical Data", Expert Systems 24(4) 2007, 212-231. (pdf)
  • J. Prentzas and I. Hatzilygeroudis, "Categorizing Approaches Combining Rule-Based and Case-Based Reasoning", Expert Systems 24(2) 2007, 97-122. (pdf)
  • G. Beligiannis, C. Koutsojannis, E. Hatzilygeroudis, C. Papavlasopoulos and J. Prentzas, "Using a hybrid AI approach for exercise difficulty level adaptation", International Journal of Continuing Engineering Education and Life-Long Learning (IJCEELL), Special Issue on "Integrating Intelligent and Adaptive Hypermedia Techniques in Web-Based Education Systems", 17(4-5), 2007, 256-272.(pdf)
  • J. Prentzas and I. Hatzilygeroudis, "Rule-Based Update Methods for a Hybrid Rule Base", Data & Knowledge Engineering 55 (2005) 103-128.
  • I. Hatzilygeroudis and J. Prentzas, "Neuro-Symbolic Approaches for Knowledge Representation in Expert Systems", International Journal of Hybrid Intelligent Systems 1(3-4) (2004) 111-126.(pdf)
  • I. Hatzilygeroudis and J. Prentzas, "Integrating (rules, neural networks) and cases for knowledge representation and reasoning in expert systems", Journal of Expert Systems with Applications 27(1) (2004) 63-75. (pdf)
  • I. Hatzilygeroudis and J. Prentzas, "Using a Hybrid Rule-Based Approach in Developing an Intelligent Tutoring System with Knowledge Acquisition and Update Capabilities", Journal of Expert Systems with Applications, 26(4) 2004 477-492. (pdf)
  • I. Hatzilygeroudis and J. Prentzas, "Constructing Modular Hybrid Rule Bases for Expert Systems", International Journal on Artificial Intelligence Tools (IJAIT), 10(1-2) (2001) 87-105. (pdf)>
  • I. Hatzilygeroudis and J. Prentzas, "Neurules: Improving the Performance of Symbolic Rules", International Journal on Artificial Intelligence Tools (IJAIT), 9(1) (2000) 113-130.(pdf)
  • I. Hatzilygeroudis and H. Reichgelt, "Handling Inheritance in a System Integrating Logic in Objects", Data & Knowledge Engineering 21 (1997) 253-280. (pdf)
  • I. Hatzilygeroudis,"SILO: Integrating Logic in Objects for Knowledge Representation and Reasoning", International Journal on Artificial Intelligence Tools (IJAIT), 5(4) (1996) 403-446. (pdf)
  • E. Hatzilygeroudis and H. Reichgelt, "ACT-P: A Configurable Theorem-Prover", Data & Knowledge Engineering 12 (1994) 277-296. (pdf)
  • I. Hatzilygeroudis, "IJCAI'91 Workshop on Objects and AI", Workshop Report, AI Magazine, Summer (1994) 86-7. (pdf)

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Papers in Conferences


2020

  • Isidoros Perikos,Konstantinos Kovas,Foteini Grivokostopoulou, Ioannis Hatzilygeroudis “A Virtual Reality Platform for Learning Aspects of Entrepreneurship”, International Workshop on Virtual Reality Based Educational Systems, 11th International Conference on Information, Intelligence, Systems and Applications (IISA 2020), 15-17 July, Piraeus, Greece, 2020.
  • Isidoros Perikos,Ioannis Daramouskas,Ioannis Hatzilygeroudis “Α Methodology For Drones to Learn How to Navigate And Avoid Obstacles Using Decision Trees”, 11th International Conference on Information, Intelligence, Systems and Applications (IISA 2020), 15-17 July, Piraeus, Greece, 2020 (short paper).
  • Ioannis Daramouskas, Antonios Matzakos Chorianopoulos, Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis “Deep Learning Methods in Medical Imaging for the Recognition of Breast Cancer”, 11th International Conference on Information, Intelligence, Systems and Applications (IISA 2020), 15-17 July, Piraeus, Greece, 2020.
  • Panteleimon-Evangelos Aivaliotis, Foteini Grivokostopoulou, Ioannis Daramouskas, Isidoros Perikos, Ioannis Hatzilygeroudis “Eye Gaze Analysis of Learners in Educational Systems”, 11th International Conference on Information, Intelligence, Systems and Applications (IISA 2020), 15-17 July, Piraeus, Greece, 2020.


2019

  • Angeliki Maria Christidi, Constantinos Christidis, Tilemahos Manolatos, Ioannis Hatzilygeroudis, Eleni Voyiatzaki “Modelling prediction of enterprises payment behavior for applying machine learning methods”, 10th International Conference on Information, Intelligence, Systems and Applications (IISA 2019), 15-17 July, Patras, Greece, 2019 (poster).
  • Nikolaos Gorgolis, Ioannis Hatzilygeroudis, Zoltán Istenes, Lazlo-Grad Gyenne “Hyperparameter Optimization of LSTM Network Models through Genetic Algorithm”, 10th International Conference on Information, Intelligence, Systems and Applications (IISA 2019), 15-17 July, Patras, Greece, 2019 (short paper).
  • Georgia Konstantinopoulou, Konstantinos Kovas, Ioannis Hatzilygeroudis, Jim Prentzas “An Approach using Certainty Factor Rules for Aphasia Diagnosis”, 10th International Conference on Information, Intelligence, Systems and Applications (IISA 2019), 15-17 July, Patras, Greece, 2019.
  • Stylianos Mystakidis, Enrique Cachafeiro, Ioannis Hatzilygeroudis “Enter the Serious E-scape Room: A Cost-Effective Serious Game Model for Deep and Meaningful E-learning”, 10th International Conference on Information, Intelligence, Systems and Applications (IISA 2019), 15-17 July, Patras, Greece, 2019.
  • Isidoros Perikos, Spyridon Kardakis, Michael Paraskevas, Ioannis Hatzilygeroudis “Hidden Markov Models for Sentiment Analysis in Social Media”, 4th IEEE International Conference on Big Data, Cloud Computing, and Data Science Engineering (BCD 2019), 39-31 May, Honolulu, Hawai, 2019.
  • Foteini Grivokostopoulou, Isidoros Perikos, Michael Paraskevas, Ioannis Hatzilygeroudis “An Ontology-based Approach for User Modelling and Personalization in E-Learning Systems”, IEEE/ACIS International Conference on Computer and Information Science (ICIS 2019), 12-14 June, Beijing, China, 2019.


2018

  • Foteini Grivokostopoulou, Isidoros Perikos, Konstantinos Kovas, Sasha Nikolic, Michael Paraskevas and Ioannis Hatzilygeroudis "Examining the Impact of Pedagogical Agents on Students Learning Experience in Virtual Worlds", IEEE International Conference on Teaching, Assessment, and Learning for Engineering (IEEE TALE 2018), 4-7 December, Wollongong, Australia, 2018
  • Isidoros Perikos, Michael Paraskevas and Ioannis Hatzilygeroudis "Facial Expression Recognition Using Adaptive Neuro-fuzzy Inference Systems", IEEE/ACIS International Conference on Computer and Information Science (IEEE ICIS 2018), 6-8 June, Singapore, 2018
  • Isidoros Perikos and Ioannis Hatzilygeroudis "A Framework for Analyzing Big Social Data and Modelling Emotions in Social Media", IEEE International Conference on Big Data Computing Service and Applications (IEEE BIGDATASERV 2018), March 26-29, Bamberg Germany, 2018.
  • Isidoros Perikos, Konstantinos Kovas, Argyro Tsirtsi, Ioannis Daramouskas, Foteini Grivokostopoulou and Ioannis Hatzilygeroudis "Opinion Mining and Visualization of Online Users Reviews: A Case Study in Booking.com", International Conference on Information, Intelligence, Systems and Applications (IISA 2018), Zante, Greece, 2018.
  • Z. Palkova, K. Kovas, M. Harnicarova, F. Grivokostopoulou, J. Valicek, I. Perikos, M. Kusnerová, V. Galanis, M. Repka, I. Hatzilygeroudis, "Physics Education - How New Technologies Can Attract It? ", 10th International Conference on Education and New Learning Technologies (EDULEARN 2018), 2-4 July, Mallorca, Spain, 2018.
  • Foteini Grivokostopoulou, Isidoros Perikos, Konstantinos Kovas, Michael Paraskevas and Ioannis Hatzilygeroudis "Formulating an Innovative Training Framework for STEM Entrepreneurship", International Technology, Education and Development Conference (INTED 2018), 5-7 March, Valencia, Spain, 2018.


2017

  • Foteini Grivokostopoulou, Isidoros Perikos, Konstantinos Kovas, Michael Paraskevas and Ioannis Hatzilygeroudis "Utilizing Virtual Reality to Assist Students in Learning Physics", IEEE International Conference on Teaching, Assessment, and Learning for Engineering (IEEE TALE 2017), Hong Kong, 2017.
  • Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis: Examining the Efficiency of Feedback Types in a Virtual Reality Educational Environment for Learning Search Algorithms. BFAL 2017: 169-175.
  • Ioannis Daramouskas, Isidoros Perikos, Ioannis Hatzilygeroudis “A Method for Performing Efficient Real-Time Object Tracing for Drones”, in Advances in Smart Systems Research, Vol. 6 No. 2: Workshop Papers from KES2017 Conference, 55-64, KES Open Access Library, 2017.
  • Isidoros Perikos and Ioannis Hatzilygeroudis "Aspect based Sentiment Analysis in Social Media with Classifier Ensembles", IEEE/ACIS International Conference on Computer and Information Science, May 24-26, Wuhan, China, 2017.
  • Isidoros Perikos, Konstantinos Kovas, Foteini Grivokostopoulou and Ioannis Hatzilygeroudis “A System for Aspect-based Opinion Mining of Hotel Reviews”, International Conference on Web Information Systems and Technologies (WEBIST), 25-27 April, Porto, Portugal, 2017.
  • Foteini Grivokostopoulou, Isidoros Perikos and Ioannis Hatzilygeroudis “A Collaborative Game for Learning Algorithms”, International Conference on Computer Supported Education (CSEDU), 21-23 April, Porto, Portugal, 2017


2016

  • Foteini Grivokostopoulou, Isidoros Perikos and Ioannis Hatzilygeroudis "An Educational Game for Teaching Search Algorithms", International Conference on Computer Supported Education (CSEDU), 21-23 April, Rome, Italy, 2016.
  • Isidoros Perikos, Foteini Grivokostopoulou, Konstantinos Kovas and Ioannis Hatzilygeroudis "Exploring the Educational Capabilities of Social Media in High Schools", International Conference on Computer Supported Education (CSEDU), 21-23 April, Rome, Italy, 2016.
  • Andreas Kanavos, Isidoros Perikos, Ioannis Hatzilygeroudis and Athanasios Tsakalidis "Integrating User's Emotional Behavior for Community Detection in Social Networks", International Conference on Web Information Systems and Technologies (WEBIST), 23-25 April, Rome, Italy, 2016.
  • Isidoros Perikos and Ioannis Hatzilygeroudis "A Classifier Ensemble Approach to Detect Emotions Polarity in Social Media", International Conference on Web Information Systems and Technologies (WEBIST), 23-25 April, Rome, Italy, 2016.


2015

  • Isidoros Perikos, Foteini Grivokostopoulou, Konstantinos Kovas and Ioannis Hatzilygeroudis "Utilizing Social Networks and Web 2.0 Technologies in Education", IEEE International Conference on Technology for Education (IEEE T4E 2015), 10-12 December, India, 2015
  • Foteini Grivokostopoulou, Isidoros Perikos and Ioannis Hatzilygeroudis "Estimating the Difficulty of Exercises on Search Algorithms using a Neuro-Fuzzy Approach", IEEE International Conference on Tools with Artificial Intelligence (IEEE ICTAI 2015), Vietri sul Mare, Italy, November 2015
  • Isidoros Perikos, Epameinondas Ziakopoulos and Ioannis Hatzilygeroudis "Recognize Emotions from Facial Expressions Using a SVM and Neural Network Schema", International Conference Engineering Applications of Neural Networks (EANN 2015), Rodos, Greece, September 2015
  • Isidoros Perikos, Foteini Grivokostopoulou, Konstantinos Kovas and Ioannis Hatzilygeroudis "Assisting Tutors to Utilize WEB 2.0 Tools in Education", IADIS Multi Conference on Computer Science and Information Systems, Las Palmas, Spain, July 2015
  • Foteini Grivokostopoulou, Isidoros Perikos, Konstantinos Kovas, Ioannis Hatzilygeroudis, "Teaching Renewable Energy using 3D Virtual Worlds ", IEEE International Conference on Advanced Learning Technologies (IEEE ICALT 2015), Taiwan, July 2015
  • Foteini Grivokostopoulou and Ioannis Hatzilygeroudis "Semi-Automatic Generation of Interactive Exercises Related to Search Algorithms", IEEE International Conference on Computer Science & Education (IEEE ICCSE 2015), Cambridge, UK, July 2015
  • Isidoros Perikos, Ioannis Hatzilygeroudis, "Embodied Coversational Agents: A methodology for Learning to Express Facial Emotions ", International Conference on Conference on Information, Intelligence, Systems and Applications (IISA 2015), Corfu, Greece, July 2015


2014

  • Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis, ”Utilizing Semantic Web Technologies and Data Mining Techniques to Analyze Students Learning and Predict Final Performance”, IEEE International Conference on Teaching, Assessment and Learning for Engineering (IEEE TALE 2014), New Zealand, December 2014
  • Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis, ‘Using Semantic Web Technologies in a Web Based System for Personalized Learning AI Course’, IEEE International Conference on Technology for Education (IEEE T4E 2014), 18-21 December, India, 2014 
  • Andreas Kanavos, Isidoros Perikos, Pantelis Vikatos, Ioannis Hatzilygeroudis, Christos Makris and Athanasios Tsakalidis, ”Conversation Emotional Modelling in Social Networks”, IEEE International Conference on Tools with Artificial Intelligence (IEEE ICTAI 2014), Limassol, Cyprus, November 2014
  • Ioannis Hatzilygeroudis, Foteini Grivokostopoulou, Konstantinos Kovas, Isidoros Perikos, “Applying Social Media in Vocational Education Trainers”, EADTU 2014 Conference, October 2014, Krakow, Poland, 2014
  • Isidoros Perikos, Epameinondas Ziakopoulos and Ioannis Hatzilygeroudis "Recognizing Emotions from Facial Expressions using Neural Network", IFIP International Conference on Artificial Intelligence Applications and Innovations (AIAI 2014), September 2014, Rodos, Greece 
  • Andreas Kanavos, Isidoros Perikos, Pantelis Vikatos, Ioannis Hatzilygeroudis, Christos Makris and Athanasios Tsakalidis "Modeling ReTweet Diffusion using Emotional Content", IFIP International Conference on Artificial Intelligence Applications and Innovations (AIAI 2014), September 2014, Rodos, Greece


2013

  • Isidoros Perikos, Ioannis Hatzilygeroudis "Recognizing Emotion Presence in Natural Language Sentences”, Procs of Second Mining Humanistic Data Workshop (MHDW 2013), Chalkidiki, Greece, September 2013, as Engineering Applications of Neural Networks, Communications in Computer and Information Science, Springer, Volume 384, 2013, pp 30-39.
  • Foteini Grivokostopoulou, Ioannis Hatzilygeroudis “Automated Marking for Interactive Exercises on Heuristic Search Algorithms”, Proceedings of IEEE International Conference on Teaching, Assessment and Learning for Engineering 2013 (TALE 2013) 26 - 93 August, Bali, Indonesia, 598-603, 2013.
  • Foteini Grivokostopoulou, Ioannis Hatzilygeroudis. "An Automatic Marking System for Interactive Exercises on Blind Search Algorithms" International Conference on Artificial Intelligence in Education (Aied), 9-13 July, Memphis, USA, 783-786, 2013.
  • Foteini Grivokostopoulou, Ioannis Hatzilygeroudis, "Teaching AΙ Search Algorithms In A Web-Based Educational System" Proceedings of the IADIS International Conference e-Learning 2013, 23 – 26 July, Prague, Czech Republic, 83-90, 2013.
  • Ioannis Hatzilygeroudis, Boris Stoyanov, Zuzana Palkova, Foteini Grivokostopoulou, Konstantinos Kovas, Isidoros Perikos, Dorina Popovici, Sorin Ionitescu “Developing a Hybrid Educational Platform based on Virtual World Learning for Teaching Renewable Energy Domain.", 14-th European Conference on E-Learning/ E-Activities / E-Business / E-Commerce / (E-COMM-LINE 2013), Bucharest, Romania, 2013


2012

  • Themistoklis Chronopoulos and Ioannis Hatzilygeroudis, "A fuzzy model for representing learning behaviors in collaborative activities in LMSs", IADIS International Conference Collaborative Technologies 2012, 17-20 July, Lisbon, Portugal.
  • Themistoklis Chronopoulos and Ioannis Hatzilygeroudis, “An Advising System for Supporting Users of Collaborative Activities in LMSs”, Proceedings of the 4th International Conference on Intelligent Networking and Collaborative Systems (INCoS 2012), Sept. 19-21, Bucharest, Romania, 81-88.
  • Ioannis Hatzilygeroudis, Foteini Grivokostopoulou, Isidoros Perikos, " Using game-based learning in teaching CS algorithms", IEEE International Conference on Teaching, Assessment and Learning for Engineering (TALE), 20-23 Aug., H2C-9 - H2C-12,  2012.
  • Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis, "An automatic marking system for FOL to CF Conversions", IEEE International Conference on Teaching, Assessment and Learning for Engineering (TALE), 20-23 Aug., H1A-7 - H1A-12,  2012.
  • Foteini Grivokostopoulou, Isidoros Perikos, Ioannis Hatzilygeroudis, "A Web-Based Interactive System For Learning FOL to CF Conversion", IADIS International Conference e-Learning 2012, 17 - 20 July, Lisbon, Portugal, 287-294.
  • Themistoklis Chronopoulos and Ioannis Hatzilygeroudis, "A fuzzy model for representing learning behaviors in collaborative activities in LMSs", IADIS International Conference Collaborative Technologies 2012, 17-20 July, Lisbon, Portugal.
  • Ioannis Hatzilygeroudis, Foteini Grivokostopoulou, Isidoros Perikos, "Teaching Aspects of Constraint Satisfaction Algorithms Via a Game", The Third Symposium on Educational Advances in Artificial Intelligence (EAAI-12) (Co-located with AAAI-12), 23-24 July, 2012, Toronto, Ontario, Canada, 2371-72.
  • Isidoros Perikos, Foteini Grivokostopoulou, Ioannis Hatzilygeroudis, "Automatic Marking of NL to FOL Conversions", 15th IASTED International Conference on Computers and Advanced Technology in Education (CATE 2012), 25-27 June, Napoli, Italy, 227-233.


2011

  • Giorgos Paschalis , Themistoklis Chronopoulos , Spyros Papadakis , Nikolaos Avouris, Ioannis Hatzilygeroudis “Structuring time and task in online collaboration activities: Α case study for teaching ER modeling using LAMS and Synergo”, 6th International Conference on Open and Distance Learning, Open and Distance Education for Global Collaboration & Educational Development, Loutraki, 4-6, November 2011
  • Ioannis Hatzilygeroudis and Jim Prentzas, “Fuzzy and Neuro-Symbolic Approaches to Assessment of Bank Loan Applicants”, IFIP Advances in Information and Communication Technology, Volume 364, Artificial Intelligence Applications and Innovations (AIAI-11), Springer, Pages 82-91, 2011. (pdf)
  • Isidoros Perikos, Foteini Grivokostopoulou, Ioannis Hatzilygeroudis “Teaching assistant tools for NL to FOL Conversion” Proceedings of the IADIS International Conference e-Learning 2011, 20 - 23 July, Rome, Italy, 337-345, 2011. (pdf)
  • Isidoros Perikos, Foteini Grivokostopoulou, Ioannis Hatzilygeroudis "Help Generation in a System for Learning NL to FOL Conversion",Proceedings of The 14th IASTED International Conference on Computers and Advanced Technology in Education (CATE 2011), 11-13 July, Cambridge, United Kingdom, 191-197, 2011.(pdf)
  • Isidoros Perikos,Foteini Grivokostopoulou, Ioannis Hatzilygeroudis, Konstantinos Kovas "Difficulty Estimator for Translating Natural Language into First Order Logic", Proceedings of the Third International Conference on Intelligent Decision Techologies (KES-IDT 2011), Volume 10, Part I, 135-144, 2011. (pdf)


2010

  • Themistoklis Chronopoulos and Ioannis Hatzilygeroudis, “An intelligent system for monitoring and supervising lessons in LAMS”, Proceedings of the International Conference on Intelligent Networking and Collaborative Systems (INCoS 2010), 46-53. (pdf)
  • Foteini Grivokostopoulou and Ioannis Hatzilygeroudis, “A Tool for Experimenting with a Theorem Prover”, Proceedings of COGNITIVE 2010, 78-83. (pdf)
  • Ioannis Hatzilygeroudis and Konstantinos Kovas, “A Tool for Automatic Creation of Rule-Based Expert Systems with CFs”, IFIP Advances in Information and Communication Technology, Volume 339, Artificial Intelligence Applications and Innovations (AIAI-10), Springer, 195-202, 2010. (pdf)
  • Themistoklis Chronopoulos, Isidoros Perikos and Ioannis Hatzilygeroudis, “An Example-Tracing Tutor for Teaching NL to FOL Conversion”, IFIP Advances in Information and Communication Technology, Volume 339, Artificial Intelligence Applications and Innovations (AIAI-10), Springer, 170-178, 2010. (pdf)
  • Constantinos Koutsojannis, George Bakogiannis, Chrysa Lithari, Eman Alkholy Nabil and Ioannis Hatzilygeroudis, “Managing Urinary Incontinence through Hand-held Real-time Decision Support Aid”, IFMBE Proceedings, 1, Volume 29, XII  Mediterranean Conference on Medical and Biological Engineering and Computing (MEDICON 2010), 913-919, 2010. (pdf)


2009

  • Constantinos Koutsojannis, Eman Nabil, Maria Tsimara, Ioannis Hatzilygeroudis, “Using machine learning techniques to improve the behaviour of a medical decision support system for prostate diseases”, Proceedings of the 9th International Conference on Intelligent Systems Design and Applications (ISDA 2009), art. no. 5364856, 341-346. (pdf)
  • Aikaterini Mpagouli, Ioannis Hatzilygeroudis, “A Rule-Based System Implementing a Method for Translating FOL Formulas into NL Sentences”, Proceedings of the 2009 International RuleML Symposium on Rule Interchange and Applications (RuleML-09) as LNCS 5858, Springer-Verlag, 167-181, 2009. (pdf)
  • Ioannis Hatzilygeroudis and Isidoros Perikos, “A Web-Based Interactive System for Learning NL to FOL Conversion”, Proceedings of the 2nd International Symposium on Intelligent Interactive Multimedia Systems and Services (IIMSS 2009), Mogliano Veneto, 16-17 July 2009, as Ernesto Damiani, Jechang Jeong, Robert J. Howlett, and Lakhmi C. Jain (Eds.): New Directions in Intelligent Interactive Multimedia Systems and Services – 2, SCI 266, Springer-Verlag, 297-307, 2009. (pdf)
  • Aikaterini Mpagouli, Ioannis Hatzilygeroudis, “A Knowledge Based System for Translating FOL Formulas into NL Sentences”, in Iliadis L, Vlahavas I, Bramer M (Eds), Artificial Intelligence Applications and Innovations III, Proceedings of the 5th IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI 2009), Thessaloniki, 23-25 April, 2009, 157-163 (short paper), Springer, 157-163. (pdf)


2007-08

  • P. Kyriakou, I. Hatzilygeroudis, J. Garofalakis, “A Tool for Managing Domain Knowledge in Intelligent Tutoring Systems”, Proceedings of ICSOFT 2008, Proceedings of ICSOFT 2008, 3rd International Conference on Software and Data Technologies (ICSOFT), Porto, Portugal, Vol.ISDM/ABF, pp 5-11, INSTICC Press, ISBN: 978-989-8111-53-1. (pdf)
  • C. Koutsojannis and I. Hatzilygeroudis, "Using a Neurofuzzy Approach in a Medical Application", in Bruno Apolloni, Robert J. Howlett and Lakhmi Jain (Eds), Proceedings of the 11th International Conference on Knowledge-Based Intelligent Information and Engineering Systems (KES-2007), Vietri sul Mare, Italy, September 12-14, 2007, LNAI 4693, Springer, 477-484. (pdf)
  • Hatzilygeroudis, Constantinos Koutsojannis and Nikolaos Papachristou, "Evaluation and Assessment Capabilities of an e-Learning System for Nursing Radiation Protection", Proceedings of the 12th IEEE International Symposium on Computer-Based Medical Systems (CBMS 2007), 2007, 301-306. (pdf)
  • I. Hatzilygeroudis, "Teaching NL to FOL and FOL to CL Conversions", Proceedings of the 20th International FLAIRS Conference, Key West, FL, May 2007, AAAI Press, 309-314. (pdf)


2006

  • C. Koutsojannis and I. Hatzilygeroudis, "Fuzzy-Evolutionary Synergism in an Intelligent Medical Diagnosis System", in B. Garbys, R. J. Howlett and L. C. Jain (Eds), Proceedings of the 10th International Conference on Knowledge-Based Intelligent Information and Engineering Systems (KES-2006), Bournemouth, UK, October 2006, Part II, LNAI 4252, Springer, 1313-1322. (pdf)
  • G. Beligiannis, I. Hatzilygeroudis, C. Koutsojannis and J. Prentzas, "A GA Driven Intelligent System for Medical Diagnosis", in B. Garbys, R. J. Howlett and L. C. Jain (Eds), Proceedings of the 10th International Conference on Knowledge-Based Intelligent Information and Engineering Systems (KES-2006), Bournemouth, UK, October 2006, Part I, LNAI 4251, Springer, 968-975. (pdf)
  • C. Koutsojannis and I. Hatzilygeroudis, "FUNEUS: A Neurofuzzy Approach Based on Fuzzy Adaline Neurons", Proceedings of the Third Starting AI Researchers' Symposium (STAIRS-2006), L. Ponserini, P. Peppas and A. Perini (Eds), IOS Press, 2006, 96-107.(pdf)
  • E. Hatzilygeroudis, C. Koutsojannis, C. Papavlasopoulos and J. Prentzas, "Knowledge-Based Adaptive Assessment in a Web-Based Intelligent Educational System", Proceedings of the 6th IEEE International Conference on Advanced Learning Technology (ICALT-2006), Kerkrade, The Netherlands, July 5-7, 2006, IEEE Computer Society, 651-655. (pdf)


2005

  • I. Hatzilygeroudis, J. Prentzas and J. Garofalakis, "Personalized Learning in Web-Based Intelligent Educational Systems: Technologies and Techniques", Proceedings of the 11th Ineternational Conference on Human-Computer Interaction (HCII-2005), Las Vegas, Nevada, USA, 22-27 July 2005 (CD). (pdf)
  • I. Hatzilygeroudis, Ch. Giannoulis and C. Koutsojannis, "Combining Expert Systems and Adaptive Hypermedia Technologies in a Web Based Educational System", Proceedings of the 5th IEEE International Conference on Advanced Learning Technology (ICALT-2005), Kaohsiung, Taiwan, July 5-8, 2005, IEEE Computer Society, 249-253. (pdf)
  • I. Hatzilygeroudis, P. Chountis, Ch. Giannoulis and C. Koutsojannis, "Using Expert Systems Technology for Student Evaluation in a Web Based Educational System", Procs of the IASTED International Conference on Web-Based Education (WBE-2005), Feb. 21-23, 2005, Grindelwald, Switzerland, 534-539.(pdf)


2004

  • C. Koutsojannis and I. Hatzilygeroudis, "FESMI: A Fuzzy Expert System for Diagnosis & Treatment of Male Impotence", in M. Gh. Negoita, R. J. Howlett and L. C. Jain (Eds), Knowledge-Based Intelligent Information and Engineering Systems, 8th International Conference, KES 2004, Wellington, New Zealand, September 2004, Proceedings, Part II, LNAI 3213, Springer, 1106-1113.(pdf)
  • I. Hatzilygeroudis, A. Karatrantou and C. Pierrakeas, "PASS: an Expert System with Certainty Factors for Predicting Student Success", in M. Gh. Negoita, R. J. Howlett and L. C. Jain (Eds), Knowledge-Based Intelligent Information and Engineering Systems, 8th International Conference, KES 2004, Wellington, New Zealand, September 2004, Proceedings, Part I, LNAI 3213, Springer, 292-298.(pdf)
  • I. Hatzilygeroudis, Ch. Gianoulis and C. Koutsojannis, "A Web-Based Education System for Predicate Logic", Proceedings of the 4th IEEE International Conference on Advanced Learning Technology (ICALT-2004), Joensuu, Finland, 30 Aug - 1 Sept 2004, IEEE Computer Society, 106-110.(pdf)
  • I. Hatzilygeroudis and J. Prentzas, "Knowledge Representation Requirements for Intelligent Tutoring Systems", in J. C. Lester, R. M. Vicari and F. Paraguacu (Eds), Intelligent Tutoring Systems, 7th International Conference, ITS 2004, Maceio, Alagoas, Brazil, August/September 2004, Proceedings, Springer, 87-97.(pdf)
  • C. Koutsojannis, I. Hatzilygeroudis and J. Prentzas, "A Web-Based Intelligent Tutoring System Teaching Health Care Technology", Procs of the IASTED International Conference on Web-Based Education (WBE-2004), Feb. 16-18, 2004, Innsbruck, Austria, 607-612.
  • Ch. Giannoulis, G. Beligiannis, L. Skarlas, S. Likothanassis and I. Hatzilygeroudis, "Novel Fitness Functions in Genetic Algorithms for Human Immune System Simulation", Companion Volume of the Proceedings of the 3rd Hellenic Conference on Artificial Intelligence (SETN-04), May 5-8, Samos, Greece, 149-158.


2003

  • I. Hatzilygeroudis, K. Perdikuri and A. Tsakalidis, "Integrating Expert Systems in Telemedicine Applications: A case study for the diagnosis of bone diseases", Procs of the 1st MEDINF International Conference on Medical Informatics & Engineering (MEDINF-2003), Oct. 9-11, Craiova, Romania, 137-140.
  • J. Prentzas and I. Hatzilygeroudis, "Integrations of Rule-Based and Case-Based Reasoning", Procs of the International Conference on Computer, Communication and Control Technologies (CCCT-03) Vol. IV, Orlando, Florida, USA, July 31-August 2 2003, 81-85.


2002

  • J. Prentzas, I. Hatzilygeroudis and A. Tsakalidis, "Updating a Hybrid Rule Base with New Empirical Source Knowledge", Proceedings of the 14th IEEE International Conference on Tools with Artificial Intelligence (ICTAI'02), 2002, Washington (November 2002), DC, USA, 9-15.(pdf)
  • J. Prentzas and I. Hatzilygeroudis, "Integrating Hybrid Rule-Based with Case-Based Reasoning", Proceedings of the ECCBR-2002, Aberdeen, Scotland (September 2002) 336-349.(pdf)
  • J. Prentzas and I. Hatzilygeroudis, "Updating a Hybrid Rule Base with Changes to its Symbolic Source Knowledge", Proceedings of the ECAI-2002, Lyon, France (July 2002) 250-254.(pdf)
  • J. Prentzas, I. Hatzilygeroudis and J. Garofalakis, "A Web-based Intelligent Tutoring System Using Hybrid Rules as its Representational Basis", Proceedings of the ITS-2002, Biarritz, France (June 2002) 119-128.(pdf)
  • I. Hatzilygeroudis and J. Prentzas, "Multi-inference with Multi-neurules" , Proceedings of the 2nd Hellenic Conference on AI (SETN 2002), Thessaloniki, Greece (April 2002) as I. Vlahavas and C. Spyropoulos (Eds), Methods and Applications of AI, LNAI Vol. 2308, Springer-Verlag, 2002 30-41. (pdf)


2001

  • I. Hatzilygeroudis and J. Prentzas, "HYMES: A HYbrid Modular Expert System with Efficient Inference and Explanation" , Proceedings of the 8th Panhellenic Conference on Informatics, Nicosia, Cyprus (November 2001) Vol.1 422-431. (pdf)
  • J. Prentzas, I. Hatzilygeroudis and C. Koutsojannis, "A Web-Based ITS Controlled by an Expert System" , Proceedings of the IEEE ICALT 2001, Madison, Wisconsin, USA (August 2001) 239-40 (short paper). (pdf)
  • J. Prentzas, I. Hatzilygeroudis, C. Koutsojannis and M. Rigou, "Architectural Aspects of a Web-Based ITS for Teaching New Information Technologies" , Proceedings of the ED-MEDIA 2001 Conference, Tampere, Finland (June 2001) 1516-1521. (pdf)
  • I. Hatzilygeroudis and J. Prentzas, "An Efficient Hybrid Rule Based Inference Engine with Explanation Capability" , Proceedings of the 14th International FLAIRS Conference, Key West, FL (May 2001) 227-231. (pdf)


2000-1993

  • I. Hatzilygeroudis and J. Prentzas, "Producing Modular Hybrid Rule Bases for Expert Systems", Proceedings of the 13th International FLAIRS Conference, Orlando, FL (May 2000) 181-185.
  • I. Hatzilygeroudis and J. Prentzas, "Neurules: Improving the Performance of Symbolic Rules", Proceeedings of 11th IEEE International Conference on Tools with Artificial Intelligence (ICTAI'99), Chicago, IL (Nov. 1999) 417-424.
  • J. Garofalakis, I. Hatzilygeroudis, G. Papanikolaou, S. Sioutas, "Architectural Aspects of an Interactive Multimedia Environment for Teaching Chemistry in Secondary Education", Proceedings of ED-MEDIA'99, Seattle, Washington, USA, June 1999, vol.1, 715-720. (pdf)
  • I. Hatzilygeroudis, P. J. Vassilakos and A. Tsakalidis, " XBONE: A Hybrid Expert System for Supporting Diagnosis of Bone Diseases", in Medical Informatics Europe'97 (MIE'97), C. Pappas, N. Maglaveras and J.-R. Scherrer (Eds), IOS Press, May 1997, Thessaloniki, Greece, 295-299. (pdf)
  • I. Hatzilygeroudis and H. Reichgelt, "The Inheritance Mechanism of a System Integrating Logic in Objects", Proceedings of the 6th IEEE International Conference on Tools with Artificial Intelligence (ICTAI'94), 1994, New Orleans, LA, USA, 724-727.
  • I. Hatzilygeroudis, "A Framework for Integrating Logic and Objects for Knowledge Representation and Reasoning", Proceedings of the 9th International Symposium on Computer and Information Sciences (ISCIS IX), Antalya, Turkey, 1994, 599-606.
  • I. Hatzilygeroudis, D. Sofotassios, P. Spirakis and V. Triantafillou, "A PMS System Integrating Knowledge-Based Technology and Simulation with On-LIne Production Control", Proceedings of the Advanced Summer Institute'94 (ASI'94) in Computer Integrated Manufacturing and Industrial Automation (CIMIA), Vol. 1, 1994, Patras, Greece, 192-197.
  • E. Catzilygeroudis, "Integrating Production Rules and Neurocomputing for Knowledge Representation", Proceedings of the International Symposium on Integrating Knowledge and Neural Heuristics (ISIKNH'94), 1994, Pensacola, FL, USA, 40-46.
  • I. Hatzilygeroudis, P. J. Vassilakos and A. Tsakalidis, "An Intelligent Medical System for Diagnosis of Bone Diseases", Proceedings of the 1st International Conference on Medical Physics and Biomedical Engineering (MPBE'94), Nicosia, Cyprus, 1994, Vol. I, 148-152. (pdf)
  • Hatzilygeroudis, "Knowledge Representation and Reasoning in a System Integrating Logic in Objects", Proceedings of the 5th IEEE International Conference on Tools with Artificial Intelligence (ICTAI'93), 1993, Boston, MA, USA, 160-167.

Top

Papers in International Workshops

  • Jim Prentzas, Ioannis Hatzilygeroudis, "Efficiently merging symbolic rules into integrated rules", 8th International Workshop on Neural-Symbolic Learning and Reasoning (NeSy-12), 23 July 2012, Toronto, Ontario, Canada, AAAI Technical Report WS-11-12, 27-32, 2012.
  • Jim Prentzas and Ioannis Hatzilygeroudis, “Combinations of Case-Based Reasoning with Other Intelligent Methods”, Proceedings of the International Workshop on Combinations of Intelligent Methods and Applications (CIMA’08), Patras, Greece, July 22, 2008 (in conjunction with the 18th European Conference on AI-ECAI’08), published in CEUR Workshop Proceedings, Vol. 270, ISSN 1613-0073 (http://ftp.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-270/), 55-58 (short paper).
  • Jim Prentzas, Ioannis Hatzilygeroudis, Othon Michail, “Improving the Accuracy of Neuro-Symbolic Rules with Case-Based Reasoning”, Proceedings of the International Workshop on Combinations of Intelligent Methods and Applications (CIMA’08), Patras, Greece, July 22, 2008 (in conjunction with the 18th European Conference on AI-ECAI’08), published in CEUR Workshop Proceedings, Vol. 270, ISSN 1613-0073 (http://ftp.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-270/), 49-54.
  • Constantinos Koutsojannis and Ioannis Hatzilygeroudis, "Patient model-based intelligent system for continuing hypertension management", Proceedings of the International Workshop on "From Knowledge to Global Care", in conjunction with 11th Conference on Artificial Intelligence in Medicine (AIME 2007), 7-11 July 2007, Amsterdam, The Netherlands.
  • I. Hatzilygeroudis, C. Koutsojannis, N. Papachristou, "Adding adaptive assessment capabilities to an e-learning system", Proceedings of the 1st IEEE International Workshop on Semantic Media Adaptation and Personalization (SMAP-06), Athens, 4-5 December, 2006, 68-73. (pdf)
  • J. Prentzas and I. Hatzilygeroudis, "Construction of Neurules from Training Examples: A Thorough Investigation", Proceedings of the ECAI-06 Workshop on "Neural-Symbolic Learning and Reasoning" (NeSy'06), A. Garcez, P. Hitzler and G. Tamburini (Eds), Riva del Garda, Italy, 28 Aug-1Sept 2006, 35-40.(pdf)
  • C. Koutsojannis, G. Beligiannis, E. Hatzilygeroudis and C. Papavlasopoulos, "Using a Hybrid AI Approach for Exercise Difficulty Level Adaptation", Proceedings of the 16th ACM Conference on Hypertext and Hypermedia (HT-05) Workshop on "Combining Intelligent and Adaptive Hypermedia Methods/Techniques in Web Based Education Systems" (CIAH-2005), I. Hatzilygeroudis (Ed), 45-52.
  • E. Hatzilygeroudis and J. Prentzas, "Incorporating Exceptions to Hybrid Rules", Procs of the 4th International Workshop on Computer Science and Information Technology (CSIT-02), 18-20 September, Patras, Greece, 6 pages (CD-ROM).
  • J. Prentzas and E. Hatzilygeroudis, "Intelligent Educational Systems with Individualized Learning", Procs of the 4th International Workshop on Computer Science and Information Technology (CSIT-02), 18-20 September, Patras, Greece, 6 pages (CD-ROM).(pdf)
  • I. Hatzilygeroudis, D. Sofotassios, N. Dendris, P. Spirakis and A. Tsakalidis, "Architectural aspects of an intelligent DSS for flow shop prodution control", Working Notes of the EPIA'95 Workshop on Applications of Expert Systems, Madeira, Portugal, October 1995, 79-89.
  • I. Hatzilygeroudis, D. Sofotassios, N. Dendris, P. Spirakis and A. Tsakalidis, "An intelligent DSS for flow shop production control", Working Notes of the IJCAI'95 Workshop on Intelligent Manufacturing Systems, Montreal, Canada, August 1995, 163-174.
  • I. Hatzilygeroudis, "A Framework Integrating Logic and Objects for Knowledge Representation" (Extended abstract), Proceedings of the IJCAI-91 Workshop on Objects and AI, 1991, Sydney, Australia.


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