Areas of interest

• Formal syntactic theories
• POS tagging and syntactic parsing
• Multilingual and multimedia information extraction

CV data

Prokopis Prokopidis has been working as a computational linguist for the Natural Language and Knowledge Extraction Department of ILSP / R.C. "Athena" since 1998. In 1993, he graduated with a Degree in English Language and Literature from the University of Athens. In 1998, he received a MA in Computational Linguistics from the University of Essex. He is a Ph.D. candidate at the University of Athens. He has participated in several Greek and European applied R&D projects in the areas of natural language processing and multilingual information extraction. He has been involved in the development of manually annotated linguistic resources for Greek (including the Greek Dependency Treebank) and in the design and implementation of several tools for the automatic annotation of Greek documents at various levels of linguistic analysis. His research interests include the recognition and normalization of temporal expressions and the spatio-temporal anchoring of events. His work has been published in Greek and international conferences and books.

• Pecina, P., Toral, A., Papavassiliou, V., Prokopidis, P. & Van Genabith, J. (2012). Domain Adaptation of Statistical Machine Translation using Web-Crawled Resources: A Case Study. In Proceedings of the 16th Annual Conference of the European Association for Machine Translation. Trento, Italy. [...] 
• Bel, N., Papavassiliou, V., Prokopidis, P., Toral, A., Victoria Arranz & Arranz, V. (2012). Mining and Exploiting Domain-Specific Corpora in the PANACEA Platform. In The Fifth Workshop on Building and Using Comparable Corpora. Istanbul, Turkey. [...] 
• Pecina, P., Toral, A., Way, A., Prokopidis, P., Papavassiliou, V. & Giagkou, M. (2011). Towards Using Web-Crawled Data for Domain Adaptation in Statistical Machine Translation. In M.L. Forcada, H. Depraetere & V. Vadeghinste (editors), Proceedings of the 15th Annual conference of the European Association for Machine Translation, pages 297-304. Leuven, Belgium. [...] 
• Prokopidis, P., Georgantopoulos, B. & Papageorgiou, H. (2011). A suite of NLP tools for Greek. In The 10th International Conference of Greek Linguistics. Komotini, Greece. [...] 
• Kardiasmenos, A., Tsigka, S., Prokopidis, P. & Papageorgiou, H. (2011). Annotation of events in Greek corpora based on the model of TimeML. In Proceedings of the 10th International Conference of Greek Linguistics. Komotini, Greece. [...] 
• Prokopidis, P., Desipri, E., Papageorgiou, H. & Markopoulos, G. (2009). TimeEL: Recognition of Temporal Expressions in Greek texts. In Proceedings of the 9th International Conference on Greek Linguistics. [...] 
• Forner, P., Penas, A., Alegria, I., Forascu, C., Moreau, N., Osenova, P. et al (2009). Overview of the CLEF 2008 Multilingual Question Answering Track. In Carol Peters , Thomas Deselaers , Nicola Ferro , Julio Gonzalo , Gareth J. F. Jones , Mikko Kurimo et al (editors), Proceedings of the 9th Cross-language evaluation forum conference on Evaluating systems for multilingual and multimodal information access. Berlin, Heidelberg : Springer-Verlag. [...] 
• Giouli, V., Marzelou, E., Prokopidis, P. & Zourari, M. (2009). Language Technologies for Processing Greek textual Cultural Heritage data. In Proceedings of the 9th International Conference on Greek Linguistics. University of Chicago. [...] 
• Prokopidis, P., Karra, V., Papagianopoulou, A. & Piperidis, S. (2008). Condensing Sentences for Subtitle Generation. In Khalid Choukri , Bente Maegaard , Joseph Mariani , Jan Odjik , Stelios Piperidis , Daniel Tapias et al (editors), Proceedings of the Sixth International Language Resources and Evaluation (LREC'08). Marrakech, Morocco. [...] 
• Ghotsoulia, V., Desipri, E., Koutsombogera, M., Prokopidis, P. & Papageorgiou, H. (2007). Towards a frame semantics resource for Greek. In Proceedings of the Sixth Workshop on Treebanks and Linguistic Theories (TLT 2007). Bergen, Norway. [...] 
• Papageorgiou, H., Prokopidis, P., Desipri, E., Koutsombogera, M. & Pouli, K. (2007). Language technologies for the retrieval of the semantic structure of events [in Greek]. In Proceedings of the 8th International Conference of Greek Linguistics, Ioannina, Greece. [...] 
• Piperidis, S., Demiros, I. & Prokopidis, P (2006). Infrastructure for a multilingual subtitle generation system. In Elo?na Miyares Berm?dez & Leonel Ruiz Miyares (editors), Linguistics in the Twenty First Century. Cambridge Scholars Press. [...] 
• Papageorgiou, H., Desipri, E., Koutsombogera, M., Pouli, Κ. & Prokopidis, P. (2006). Adding multi-layer Semantics to the Greek Dependency Treebank. In Proceedings of The Fifth International Conference on Language and Evaluation (LREC-2006). Genoa, Italy. [...] 
• Prokopidis, P., Desipri, E., Koutsombogera, M., Papageorgiou, H. & Piperidis, S. (2005). Theoretical and Practical Issues in the Construction of a Greek Dependency Treebank. In Montserrat Civit , S, Ra K?bler & Ma. Ant?nia Mart? (editors), Proceedings of The Fourth Workshop on Treebanks and Linguistic Theories (TLT 2005), pages 149-160. Barcelona, Spain. [...] 
• Desipri, E., Prokopidis, P., Koutsombogera, M. & Piperidis, S. (2005). Towards a Greek Dependency Corpus. In Stelios Piperidis & Elena Paskaleva (editors), Proceedings of the RANLP 2005 International Workshop on Language and Speech Infrastructure for Information Access in the Balkan Countries, pages 9-14. Borovets, Bulgaria. [...] 
• Papageorgiou, H., Prokopidis, P., Protopapas, A. & Carayannis, G (2005). Multimedia Indexing and Retrieval Using Natural Language, Speech and Image Processing Methods. In Giorgos Stamou & Stefanos Kollias (editors), Multimedia Content and the Semantic Web: Methods, Standards and Tools. Wiley. [...] 
• Papageorgiou, H., Prokopidis, P., Demiros, I., Hatzigeorgiu, N. & Carayannis, G. (2004). CIMWOS: A Multimedia Retrieval System based on Combined Text, Speech and Image Processing. In RIAO 2004 Conference Proceedings: Coupling approaches, coupling media and coupling languages for information retrieval, pages 38-51. University of Avignon (Vaucluse), France. [...] 
• Piperidis, S., Demiros, I. & Prokopidis, P. (2004). Multimodal multilingual information processing for automatic subtitle generation: Resources, Methods and System Architecture. In Proceedings of the Workshop on E-Tools and Translation of the 5th International Languages and the Media Conference and Exhibition. Berlin, Germany. [...] 
• Piperidis, S., Demiros, I., Prokopidis, P., Vanroose, P., Hoethker, A., Daelemans, W. et al. (2004). Multimodal Multilingual Resources in the Subtitling Process. In Proceedings of the Fourth International Conference on Language Resources and Evaluation (LREC 2004), pages 205-208. Lisbon, Portugal. [...] 
• Papageorgiou, H., Prokopidis, P., Ρετάλης, Δ. & Μαρκογιάννης, Τ (2004). Αυτόματη παραγωγή κειμένου με χρήση ορολογικών δεδομένων: το έργο ΚΑΙΡΟΣ. In Mαριάννα Κατσογιάννου & Ελένη Ευθυμίου (editors), Ελληνική Ορολογία: Έρευνα και Εφαρμογές. Καστανιώτης. [...] 
• Papageorgiou, H., Prokopidis, P., Giouli, V., Demiros, I., Konstantinidis, A. & Piperidis, S. (2003). Η χρήση της γλωσσικής τεχνολογίας στην επεξεργασία της Ελληνικής. In Πρακτικά του 6ου Διεθνούς Συνεδρίου Ελληνικής Γλωσσολογίας. Ρέθυμνο. [...] 
• Papageorgiou, H., Prokopidis, P., Demiros, I., Giouli, V., Konstantinidis, A. & Piperidis, S. (2002). Multi-level XML-based Corpus Annotation. In Proceedings of the 3nd Language Resources and Evaluation Conference. Las Palmas. [...] 
• Papageorgiou, H., Prokopidis, P., Giagkou, M. & Παπαθεοδώρου, Α. (2002). Recognition of Nominal and Verbal Groups Using Memory Based Techniques [in Greek]. In Proceedings of the 22nd Annual Meeting of the Department of Linguistics, pages 113-123. Θεσσαλονίκη : Aristotle University of Thessaloniki. [...] 
• Papageorgiou, H., Prokopidis, P., Malavazos, C., Triantafyllou, Y., Wagner, K., Piperidis, S. et al. (2001). Automatic Generation of Weather Forecasts: KAIROS project [in Greek]. In Proceedings of the 21st Meeting of the Department of Linguistics, pages 562-573. University of Thessaloniki. [...] 
• Papageorgiou, H., Prokopidis, P., Giouli, V. & Piperidis, S. (2000). A Unified POS Tagging Architecture and its Application to Greek. In Proceedings of the 2nd Language Resources and Evaluation Conference, pages 1455-1462. Athens. [...] 
• Μπούτσης, Σ., Prokopidis, P., Giouli, V. & Piperidis, S. (2000). Shallow Parsing of Unrestricted Text [in Greek]. In Proceedings of the 21st Meeting of the Department of Linguistics, pages 502-513. [...] 
• Boutsis, S., Prokopidis, P., Giouli, V. & Piperidis, S. (2000). A Robust Parser for Unrestricted Greek Text. In Proceedings of the 2nd Language Resources and Evaluation Conference, pages 467-474. Athens. [...] 
• Prokopidis, P. (1998). An HPSG Account of Modern Greek Relative Clauses. Master Thesis, University of Essex. [...]