Department of Computer Science

NLP Laboratory

Prof. Yannis Maistros

Iroon Polytexneiou 9 15780,  Zografou   Athens Greece

Tel +302107721536

Current Position:  Associate Researcher in Natural Language Processing Laboratory



        Statistical Natural Language Processing, Statistics, Signal Processing, Neural networks

Recent Publications      

        SF-HME system: A Hierarchical Mixtures-of-Experts classification system for spam filtering. Petros Belsis, Kostas Fragos, Stefanos Gritzalis, Christos Skourlas. To be appeared In 21st ACM Symposium on Applied Conference 23-27 April 2006, Dijon, France

A X2-Weighted Maximum Entropy Model for Text Classification, K. Fragos, I. Maistros, C. Skourlas. In  Proceedings of 2nd International Conference On Natural Language Understanding and Cognitive Science, Miami, Florida: 22-23 May 2005.


 Discovering Collocations in Modern Greek Language, K. Fragos, I. Maistros, C. Skourlas. In Proceedings of 1st International Conference on Natural Language Understanding and Cognitive Science, Porto, Portugal: 13-14 April 2004.


 Using Conditional Probabilities of Weighted Terms for a Lexicon Based Sense Disambiguation System,  K. Fragos, I. Maistros, C. Skourlas. In  Proceedings o 3rd WSEAS Conference in Informatics, Malta, June 2003


Using Wordnet Lexical Database and Internet to Disambiguate Word Senses,  K. Fragos, I. Maistros, C. Skourlas. In  Proceedings of  9th Panhellenic Conference in Informatics, Thessaloniki Greece, 20-22 Oct.  2003


Word Sense Disambiguation using WordNet relations, K. Fragos, I. Maistros, C. Skourlas.   In  Proceedings of  1st Balkan Conference in Iformatics, Thessaloniki Greece 20-22 Oct. (2003).


     K. Fragos, I. Maistros. A Goodness of Fit Test Approach in Information Retrieval. To be appeared in the coming issue of the journal of “Information Retrieval”.

    K. Fragos, I. Maistros. Distributional Analysis of Related Synsets in WordNet for a Word Sense Disambiguation Task. In International Journal of Artificial Intelligence Tools, Vol. 14, No. 6 (2005) 919-934.


 My PhD Dissertation (in Greek Language)



 "Σχηματοποίηση ΕΠΕΤ ΙΙ" EΜΠ (2001-2002)

"Multilingual Images", Institute of Language Systems Processing (ilsp) 2003

"Αξιοποίηση των Τεχνολογιών της Πληροφορίας και των Επικοινωνιών στην Εκπαίδευση"

Κοινωνία της Πληροφορίας, Γ' Κοινοτικό Πλαίσιο Στήριξης (2002-2003)

"Education  and Initial Vocational Training Program – Archimedes"  TEIA  2003-2005



Last Updated October 2005