@conference {aggelopoulou2014ontological,
	title = {Ontological Modelling for Intelligent e-Learning},
	year = {2014},
	author = {Aggelopoulou, Niki and Christos J. Pierrakeas and Artikis, Alexander and Kalles, Dimitris}
}
@inbook {hadzilacos2008developing,
	title = {On Developing and Communicating User Models for Distance Learning Based on Assignment and Exam Data},
	booktitle = {Intelligent Interactive Systems in Knowledge-Based Environments},
	year = {2008},
	pages = {137{\textendash}155},
	publisher = {Springer},
	organization = {Springer},
	author = {Hadzilacos, Thanasis and Kalles, Dimitris and Christos J. Pierrakeas}
}
@article {kalles2008intelligently,
	title = {Intelligently Raising Academic Performance Alerts},
	journal = {1st International Workshop on Combinations of Intelligent Methods and Applications (CIMA), 18th European Conference on Artificial Intelligence, Patras, Greece},
	year = {2008},
	pages = {37{\textendash}42},
	author = {Kalles, Dimitris and Christos J. Pierrakeas and Xenos, Michalis}
}
@article {kalles2006analyzing,
	title = {Analyzing student performance in distance learning with genetic algorithms and decision trees},
	journal = {Applied Artificial Intelligence},
	volume = {20},
	number = {8},
	year = {2006},
	pages = {655{\textendash}674},
	publisher = {Taylor \& Francis},
	author = {Kalles, Dimitris and Christos J. Pierrakeas}
}
@inbook {hadzilacos2006small,
	title = {On small data sets revealing big differences},
	booktitle = {Advances in Artificial Intelligence},
	year = {2006},
	pages = {512{\textendash}515},
	publisher = {Springer},
	organization = {Springer},
	author = {Hadzilacos, Thanasis and Kalles, Dimitris and Christos J. Pierrakeas and Xenos, Michalis}
}
@inbook {kalles2006using,
	title = {Using genetic algorithms and decision trees for a posteriori analysis and evaluation of tutoring practices based on student failure models},
	booktitle = {Artificial Intelligence Applications and Innovations},
	year = {2006},
	pages = {9{\textendash}18},
	publisher = {Springer},
	organization = {Springer},
	author = {Kalles, Dimitris and Christos J. Pierrakeas}
}
