A survey on student dropout rates and dropout causes concerning the students in the Course of Informatics of the Hellenic Open University. - Michalis Nik Xenos; Christos Pierrakeas; Panayiotis E. Pintelas (Comput. Educ., 2002)

Preventing Student Dropout in Distance Learning Using Machine Learning Techniques. - Sotiris B. Kotsiantis; Christos Pierrakeas; Panayiotis E. Pintelas (KES, 2003)

PASS: An Expert System with Certainty Factors for Predicting Student Success. - Ioannis Hatzilygeroudis; Anthi Karatrantou; Christos Pierrakeas (KES, 2004)

Predicting Students' Performance In Distance Learning Using Machine Learning Techniques. - Sotiris B. Kotsiantis; Christos Pierrakeas; Panayiotis E. Pintelas (Appl. Artif. Intell., 2004)

Using Genetic Algorithms and Decision Trees for a posteriori Analysis and Evaluation of Tutoring Practices based on Student Failure Models. - Dimitris Kalles; Christos Pierrakeas (AIAI, 2006)

On Small Data Sets Revealing Big Differences. - Thanasis Hadzilacos; Dimitris Kalles; Christos Pierrakeas; Michalis Nik Xenos (SETN, 2006)

Analyzing Student Performance in Distance Learning with Genetic Algorithms and Decision Trees. - Dimitris Kalles; Christos Pierrakeas (Appl. Artif. Intell., 2006)

Modeling the characteristics of a learning object for use within e-learning applications. - George Nikolopoulos; Georgia D. Solomou; Christos Pierrakeas; Achilles Kameas (BCI, 2012)

An Ontology Model for Building, Classifying and Using Learning Outcomes. - Aikaterini K. Kalou; Georgia D. Solomou; Christos Pierrakeas; Achilles Kameas (ICALT, 2012)

Modeling the Knowledge Domain of the Java Programming Language as an Ontology. - Aggeliki Kouneli; Georgia D. Solomou; Christos Pierrakeas; Achilles Kameas (ICWL, 2012)

An Ontology-Based Model for Student Representation in Intelligent Tutoring Systems for Distance Learning. - Ioannis Panagiotopoulos; Aikaterini K. Kalou; Christos Pierrakeas; Achilles Kameas (AIAI (1), 2012)

An Ontological Approach for Domain Knowledge Modeling and Management in E-Learning Systems. - Ioannis Panagiotopoulos; Aikaterini K. Kalou; Christos Pierrakeas; Achilles Kameas (AIAI (2), 2012)

Creating a LO Metadata Profile for Distance Learning: An Ontological Approach. - George Nikolopoulos; Aikaterini K. Kalou; Christos Pierrakeas; Achilles Kameas (MTSR, 2012)

An Ontology-Based Approach in Learning Programming Languages. - Christos Pierrakeas; Georgia D. Solomou; Achilles Kameas (Panhellenic Conference on Informatics, 2012)

A correlation verb (CorrVerb) ontology for object properties specification within knowledge domain representations. - Christos Pierrakeas; Ioannis Panagiotopoulos; Achilles Kameas (BCI, 2013)

Ontological Modelling for Intelligent E-learning. - Nikolitsa Aggelopoulou; Christos Pierrakeas; Alexander Artikis; Dimitris Kalles (ICALT, 2014)

Empirical study towards the creation of educational user profiles for the students of an open university. - Maria Virvou; Katerina Kabassi; Efthimios Alepis; Achilles Kameas; Christos Pierrakeas; Aspasia Theodosiou (IISA, 2015)

Characterization of Educational Resources in e-Learning Systems Using an Educational Metadata Profile. - Georgia D. Solomou; Christos Pierrakeas; Achilles Kameas (J. Educ. Technol. Soc., 2015)

Predicting University Students' Grades Based on Previous Academic Achievements. - Maria Tsiakmaki; Georgios Kostopoulos; Giannis Koutsonikos; Christos Pierrakeas; Sotiris Kotsiantis; Omiros Ragos (IISA, 2018)

Forecasting students' success in an open university. - George Kostopoulos; Sotiris Kotsiantis; Christos Pierrakeas; Giannis Koutsonikos; George A. Gravvanis (Int. J. Learn. Technol., 2018)

Implementing a MOOC course for Museum Professionals with a worldwide effect. - Panagiota Polymeropoulou; Christos Pierrakeas; Spiros A. Borotis; Achilles Kameas (IISA, 2019)

A Semi-Supervised Regression Algorithm for Grade Prediction of Students in Distance Learning Courses. - Georgios Kostopoulos; Sotiris Kotsiantis; Nikos Fazakis; Giannis Koutsonikos; Christos Pierrakeas (Int. J. Artif. Intell. Tools, 2019)

Experience Gained From Applying a Team-Based Approach for MOOC Development. - Natalia D. Spyropoulou; Christos Pierrakeas; Achilles Kameas (Int. J. Web Based Learn. Teach. Technol., 2019)

The Variability of the Reasons for Student Dropout in Distance Learning and the Prediction of Dropout-Prone Students. - Christos Pierrakeas; Giannis Koutsonikos; Anastasia-Dimitra Lipitakis; Sotiris Kotsiantis; Michalis Xenos; George A. Gravvanis (Machine Learning Paradigms, 2020)

Interpretable Models for Early Prediction of Certification in MOOCs: A Case Study on a MOOC for Smart City Professionals. - Georgios Kostopoulos; Theodor Panagiotakopoulos; Sotiris Kotsiantis; Christos Pierrakeas; Achilles Kameas (IEEE Access, 2021)

Knowledge and skills of the digital transformation of the Greek public school in the post covid era. - Gerasimos Kalogeratos; Christos Pierrakeas (IISA, 2022)

Hybrid team members appraisal criteria in feedback provided through collaborative work environment-An educational perspective. - Ioannis Katsenos; Christos Pierrakeas (IISA, 2022)

The Use of ICT in Education Administration Concerning Principals of Greek Primary Schools. - Paraskevi Galani; Christos Pierrakeas (IISA, 2023)

Digital and Socio Emotional Benefits of the Students and the Teachers from the Implementation of a Steam Education Project. - Gerasimos Kalogeratos; Angeliki Alexandropoulou; Christos Pierrakeas (IISA, 2023)

A Methodology for Collecting, Processing and Validating Team Members' Contribution Data in the Academic Environment. - Ioannis Katsenos; Christos Pierrakeas (IISA, 2024)

A Natural Language Processing Framework for Hotel Recommendation Based on Users' Text Reviews. - Lavrentia Aravani; Emmanuel Pintelas; Christos Pierrakeas; Panagiotis Pintelas (CoRR, 2024)