Ion Androutsopoulos

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Publications (and accompanying software)

Back side of robot's head from project INDIGO.

You can search for articles that cite my publications via Google Scholar or Microsoft Academic Search.

Some of my publications are accompanied by publicly available software and/or datasets (see below). See also the Software and Data page of AUEB's Natural Language Processing Group. Our group's Greek part-of-speech tagger [version 1, version 2 alpha] is also available.

Books

Journal articles

  1. I. Androutsopoulos, G. Lampouras and D. Galanis, "Generating Natural Language Descriptions from OWL Ontologies: the NaturalOWL System". Journal of Artificial Intelligence Research, 48:671-715, 2013. The software of this article (NaturalOWL v.2.0) is freely available.
  2. I. Androutsopoulos and P. Malakasiotis, "A Survey of Paraphrasing and Textual Entailment Methods". Journal of Artificial Intelligence Research, 38:135-187, 2010.
  3. P. Constantopoulos, C. Dallas, I. Androutsopoulos, S. Angelis, A. Deligiannakis, D. Gavrilis, Y. Kotidis and C. Papatheodorou, "DCC&U: An Extended Digital Curation Lifecycle Model". International Journal of Digital Curation, 1(4):34-45, 2009.
  4. E.F. Mageirou, D.K. Vassilakis and I. Androutsopoulos, "Teaching Nonzero Sum Games Using a Diagrammatic Determination of Equilibria". INFORMS Transactions on Education, 8(3):115-124, 2008.
  5. G. Lucarelli, X. Vasilakos and I. Androutsopoulos, "Named Entity Recognition in Greek Texts with an Ensemble of SVMs and Active Learning" (preprint). International Journal on Artificial Intelligence Tools, 16(6):1015-1045, 2007. The named-entity recognizer described in this paper is freely available (this is the most recent version of the recognizer).
  6. I. Androutsopoulos, J. Oberlander and V. Karkaletsis, "Source Authoring for Multilingual Generation of Personalised Object Descriptions". Natural Language Engineering, 13(3):191-233, 2007.
  7. A. Isard, J. Oberlander, I. Androutsopoulos and C. Matheson, "Speaking the Users' Languages". IEEE Intelligent Systems, special issue on "Advances in Natural Language Processing", 18(1):40-45, 2003.
  8. G. Sakkis, I. Androutsopoulos, G. Paliouras, V. Karkaletsis, C.D. Spyropoulos and P. Stamatopoulos, "A Memory-Based Approach to Anti-Spam Filtering for Mailing Lists". Information Retrieval, 6(1):49-73, 2003. The Ling-Spam corpus of the paper is also available.
  9. I. Androutsopoulos, G.D. Ritchie and P. Thanisch, "Time, Tense and Aspect in Natural Language Database Interfaces". Natural Language Engineering, 4(3):229-276, 1998.
  10. I. Androutsopoulos, G.D. Ritchie, and P. Thanisch, "Natural Language Interfaces to Databases - An Introduction". Natural Language Engineering, 1(1):29-81, 1995.

Book chapters

  1. J. Calder, A.C. Melengoglou, C. Callaway, E. Not, F. Pianesi, I. Androutsopoulos, C.D. Spyropoulos, G. Xydas, G. Kouroupetroglou and M. Roussou, "Multilingual Personalized Information Objects" (preprint). In O. Stock and M. Zancanaro (Eds.), Multimodal Intelligent Information Presentation, pp. 177-201, Springer, 2005.
  2. I. Androutsopoulos and M. Aretoulaki, "Natural Language Interaction". In R. Mitkov (Ed.), Handbook of Computational Linguistics, chapter 35, pp. 629-649, Oxford University Press, 2003. 
  3. I. Androutsopoulos and G.D. Ritchie, "Database Interfaces". In R. Dale, H. Moisl, and H. Somers (Eds.), Handbook of Natural Language Processing, chapter 9, pp. 209-240, Marcel Dekker Inc., 2000.

Conference and workshop articles

  1. A. Kosmopoulos, G. Paliouras and I. Androutsopoulos, "The Effect of Dimensionality Reduction on Large Scale Hierarchical Classification". Proceedings of the 5th Conference and Labs of the Evaluation Forum (CLEF 2014), Sheffield, UK, 2014.
  2. M. Pontiki, D. Galanis, J. Pavlopoulos, H. Papageorgiou, I. Androutsopoulos and S. Manandhar, "SemEval-2014 Task 4: Aspect Based Sentiment Analysis". Proceedings of the 8th International Workshop on Semantic Evaluation (SemEval 2014), at the 25th International Conference on Computational Linguistics (COLING 2014), Dublin, Ireland, pp. 27-35, 2014.
  3. J. Pavlopoulos and I. Androutsopoulos, "Multi-Granular Aspect Aggregation in Aspect-Based Sentiment Analysis" [slides, dataset]. Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2014), Gothenburg, Sweden, pp. 78-87, 2014.
  4. J. Pavlopoulos and I. Androutsopoulos, "Aspect Term Extraction for Sentiment Analysis: New Datasets, New Evaluation Measures and an Improved Unsupervised Method" [slides]. Proceedings of the 5th Workshop on Language Analysis for Social Media (LASM 2014), 14th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2014), Gothenburg, Sweden, pp. 44-52, 2014.
  5. G. Lampouras and I. Androutsopoulos, "Using Integer Linear Programming for Content Selection, Lexicalization, and Aggregation to Produce Compact Texts from OWL Ontologies". Proceedings of the 14th European Workshop on Natural Language Generation (ENLG 2013), at the 51st Annual Meeting of the Association for Computational Linguistics (ACL 2013), Sofia, Bulgaria, pp. 51-60, 2013. The software of this article (NaturalOWL v.2.0) is freely available.
  6. G. Lampouras and I. Androutsopoulos, "Using Integer Linear Programming in Concept-to-Text Generation to Produce More Compact Texts". Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (ACL 2013), Sofia, Bulgaria, pp. 561-566 (short papers), 2013. The software of this article (NaturalOWL v.2.0) is freely available.
  7. D. Galanis, G. Lampouras and I. Androutsopoulos, "Extractive Multi-Document Summarization with Integer Linear Programming and Support Vector Regression" [slides]. Proceedings of the 24th International Conference on Computational Linguistics (COLING 2012), Mumbai, India, 2012.
  8. G. Tsatsaronis, M. Schroeder, G. Paliouras, Y. Almirantis, I. Androutsopoulos, E. Gaussier, P. Gallinari, T. Artieres, M. Alvers, M. Zschunke and A. Ngonga, "BioASQ: A Challenge on Large-Scale Biomedical Semantic Indexing and Question Answering". Proceedings of the AAAI Fall Symposium on Information Retrieval and Knowledge Discovery in Biomedical Text, Arlington, VA, USA, pp. 92-98, 2012.
  9. V. Panagiotopoulou, I. Varlamis, I. Androutsopoulos and G. Tsatsaronis, "Word Sense Disambiguation as an Integer Linear Programming Problem". Proceedings of the 7th Hellenic Conference on Artificial Intelligence (SETN 2012), Lamia, Greece, pp. 33-40, 2012.
  10. P. Malakasiotis and I. Androutsopoulos, "A Generate and Rank Approach to Sentence Paraphrasing" [slides, dataset]. Proceedings of the Conference on Empirical Methods on Natural Language Processing (EMNLP 2011), Edinburgh, UK, pp. 96-106, 2011.
  11. D. Galanis and I. Androutsopoulos, "A New Sentence Compression Dataset and Its Use in an Abstractive Generate-and-Rank Sentence Compressor". Proceedings of the Language Generation and Evaluation Workshop (UCNLG+Eval), at the Conference on Empirical Methods on Natural Language Processing (EMNLP 2011), Edinburgh, UK, pp. 1-11, 2011.
  12. D. Galanis and I. Androutsopoulos, "An Extractive Supervised Two-Stage Method for Sentence Compression" [slides]. Proceedings of Human Language Technologies: The 11th Annual Conference of the North American Chapter of the Association for Computational Linguistics (HLT-NAACL 2010), Los Angeles, CA, USA, pp. 885-893, 2010. The paper's sentence compression software is freely available.
  13. G. Lampouras and I. Androutsopoulos, "Finding Short Definitions of Terms on Web Pages" [slides, poster]. Proceedings of the 2009 Conference on Empirical Methods on Natural Language Processing (EMNLP 2009), Suntec, Singapore, pp. 1270-1279, 2009.
  14. D. Vogiatzis, D. Galanis, V. Karkaletsis, I. Androutsopoulos and C.D. Spyropoulos, "A Conversant Robotic Guide to Art Collections". Proceedings of the 2nd Workshop on Language Technology for Cultural Heritage Data, Language Resources and Evaluation Conference (LREC 2008), Marrakech, Morocco, 2008.
  15. J. Oberlander, G. Karakatsiotis, A. Isard and I. Androutsopoulos, "Building an Adaptive Museum Gallery in Second Life" (pre-print). Proceedings of Museums and the Web, Montreal, Quebec, Canada, 2008. See also this video.
  16. A. Kosmopoulos, G. Paliouras and I. Androutsopoulos, "Adaptive Spam Filtering Using Only Naive Bayes Text Classifiers". Spam Filtering Challenge Competition, 5th Conference on Email and Anti-Spam (CEAS 2008), Mountain View, CA, USA, 2008. The software of the e-mail spam filter described in this paper, as it participated in the competition, is also available.
  17. P. Malakasiotis and I. Androutsopoulos, "Learning Textual Entailment using SVMs and String Similarity Measures". Proceedings of the ACL-PASCAL Workshop on Textual Entailment and Paraphrasing, 45th Annual Meeting of the Association for Computational Linguistics (ACL 2007), Prague, Czech Republic, pp. 42-47, 2007.
  18. D.K. Vassilakis, I. Androutsopoulos and E.F. Mageirou, "A Game-Theoretic Investigation of the Effect of Human Interactive Proofs on Spam E-mail". Proceedings of the 4th Conference on Email and Anti-Spam (CEAS 2007), Mountain View, CA, USA, 2007.
  19. D. Galanis and I. Androutsopoulos, "Generating Multilingual Descriptions from Linguistically Annotated OWL Ontologies: the NaturalOWL System". Proceedings of the 11th European Workshop on Natural Language Generation (ENLG 2007), Schloss Dagstuhl, Germany, pp. 143-146, 2007.
  20. G. Tsatsaronis, M. Vazirgiannis and I. Androutsopoulos, "Word Sense Disambiguation with Spreading Activation Networks Generated from Thesauri". Proceedings of the 20th International Joint Conference on Artificial Intelligence (IJCAI 2007), Hyderabad, India, pp. 1725-1730, 2007.
  21. V. Metsis, I. Androutsopoulos and G. Paliouras, "Spam Filtering with Naive Bayes -- Which Naive Bayes?" [slides]. Proceedings of the 3rd Conference on Email and Anti-Spam (CEAS 2006), Mountain View, CA, USA, 2006. This version of the paper and slides includes some minor corrections that were made after the conference. The Enron-Spam datasets of the paper are also available.
  22. G. Lucarelli and I. Androutsopoulos, "A Greek Named-Entity Recognizer that Uses Support Vector Machines and Active Learning". Proceedings of the 4th Hellenic Conference on Artificial Intelligence (SETN 2006), Heraklion, Crete, Greece, 2006. The version of the named-entity recognizer that is described in this paper is freely available, but a more recent version is also available (see above).
  23. I. Androutsopoulos and D. Galanis, "A Practically Unsupervised Learning Method to Identify Single-Snippet Answers to Definition Questions on the Web". Proceedings of the Human Language Technology Conference and Conference on Empirical Methods in Natural Language Processing (HLT/EMNLP 2005), Vancouver, Canada, pp. 323-330, 2005.
  24. I. Androutsopoulos, E.F. Magirou and D.K. Vassilakis, "A Game Theoretic Model of Spam E-Mailing". Proceedings of the 2nd Conference on Email and Anti-Spam (CEAS 2005), Stanford University, CA, USA, 2005.
  25. I. Androutsopoulos, S. Kallonis and V. Karkaletsis, "Exploiting OWL Ontologies in the Multilingual Generation of Object Descriptions". Proceedings of the 10th European Workshop on Natural Language Generation (ENLG 2005), Aberdeen, U.K., pp. 150-155, 2005.
  26. S. Miliaraki and I. Androutsopoulos, "Learning to Identify Single-Snippet Answers to Definition Questions". Proceedings of the 20th International Conference on Computational Linguistics (COLING 2004), Geneva, Switzerland, pp. 1360-1366, 2004.
  27. E. Michelakis, I. Androutsopoulos, G. Paliouras, G. Sakkis and P. Stamatopoulos, "Filtron: A Learning-Based Anti-Spam Filter". Proceedings of the 1st Conference on Email and Anti-Spam (CEAS 2004), Mountain View, CA, USA, 2004. A longer version of the paper is also available (technical report "Learning to Filter Unsolicited Commercial E-Mail"), as well as the PU corpora that were used in the paper.
  28. A. Dimitromanolaki and I. Androutsopoulos, "Learning to Order Facts for Discourse Planning in Natural Language Generation". Proceedings of the 9th European Workshop on Natural Language Generation, 10th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2003), Budapest, Hungary, pp. 23-30, 2003.
  29. I. Androutsopoulos, D. Spiliotopoulos, K. Stamatakis, A. Dimitromanolaki, V. Karkaletsis and C.D. Spyropoulos, "Symbolic Authoring for Multilingual Natural Language Generation". In I.P. Vlahavas and C.D. Spyropoulos (Eds.), Methods and Applications of Artificial Intelligence (Proceedings of the 2nd Hellenic Conference on Artificial Intelligence - SETN 2002, Thessaloniki, Greece), Lecture Notes in Artificial Intelligence 2308, pp. 131-142, Springer, 2002.
  30. G. Petasis, V. Karkaletsis, G. Paliouras, I. Androutsopoulos and C.D. Spyropoulos, "Ellogon: A New Text Engineering Platform". Proceedings of the 3rd International Conference on Language Resources and Evaluation (LREC 2002), Las Palmas, Canary Islands, Spain, pp. 72-78, 2002.
  31. G. Sakkis, I. Androutsopoulos, G. Paliouras, V. Karkaletsis, C.D. Spyropoulos and P. Stamatopoulos, "Stacking Classifiers for Anti-Spam Filtering of E-Mail". In L. Lee and D. Harman (Eds.), Proceedings of the 6th  Conference on Empirical Methods in Natural Language Processing (EMNLP 2001), Carnegie Mellon University, Pittsburgh, PA, USA, pp. 44-50, 2001. See what Technology Research News wrote about this article. The Ling-Spam corpus of the paper is available.
  32. I. Androutsopoulos, J. Calder, E. Not, F. Pianesi and M. Roussou, "Multilingual Personalised Information Objects". Proceedings of the International Workshop on Information Presentation and Natural Multimodal Dialogue, Verona, Italy, pp. 25-29, 2001.
  33. A. Dimitromanolaki, I. Androutsopoulos and V. Karkaletsis, "A Large-Scale Systemic Functional Grammar of Greek". Proceedings of the 5th International Conference on Greek Linguistics, Sorbonne, France, 2001. An extended version of this paper is also available.
  34. I. Androutsopoulos, V. Kokkinaki, A. Dimitromanolaki, J. Calder, J. Oberlander, and E. Not, "Dynamic Multilingual Object Descriptions: The M-PIRO Project". Proceedings of the 29th Conference on Computer Applications and Quantitative Methods in Archaeology, Gotland, Sweden, 2001. A form of the paper with higher quality images is also available.
  35. G. Petasis, V. Karkaletsis, D. Farmakiotou, G. Samaritakis, I. Androutsopoulos and C.D. Spyropoulos, "A Greek Morphological Lexicon and its Exploitation by a Greek Controlled Language Checker". In Y. Manolopoulos and S. Evripidou (Eds.), Proceedings of the 8th Panhellenic Conference in Informatics (EPY 2001), Nicosia, Cyprus, vol. 1, pp. 80-89, 2001.
  36. D. Spiliotopoulos, I. Androutsopoulos and C.D. Spyropoulos, "Human-Robot Interaction Based on Spoken Natural Language Dialogue". Presented at the European Workshop on Service and Humanoid Robots (Servicerob 2001), Santorini, Greece, 2001.
  37. I. Androutsopoulos, J. Koutsias, K.V. Chandrinos and C.D. Spyropoulos, "An Experimental Comparison of Naive Bayesian and Keyword-Based Anti-Spam Filtering with Encrypted Personal E-mail Messages". In Belkin, N.J., Ingwersen, P. and Leong, M.-K. (Eds.), Proceedings of the 23rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2000), Athens, Greece, pp. 160-167, 2000. The PU1 corpus of the paper is available.
  38. I. Androutsopoulos and R. Dale, "Selectional Restrictions in HPSG". Proceedings of the 18th International Conference on Computational Linguistics (COLING 2000), Saarbrucken, Germany, pp. 15-20, 2000.
  39. I. Androutsopoulos, J. Koutsias, K.V. Chandrinos, G. Paliouras and C.D. Spyropoulos, "An Evaluation of Naive Bayesian Anti-Spam Filtering" (also available in PDF). In Potamias, G., Moustakis, V. and van Someren, M. (Eds.), Proceedings of the Workshop on Machine Learning in the New Information Age, 11th European Conference on Machine Learning (ECML 2000), Barcelona, Spain, pp. 9-17, 2000. The Ling-Spam corpus of the paper is available.
  40. I. Androutsopoulos, G. Paliouras, V. Karkaletsis, G. Sakkis, C.D. Spyropoulos and P. Stamatopoulos, "Learning to Filter Spam E-Mail: A Comparison of a Naive Bayesian and a Memory-Based Approach". In H. Zaragoza, P. Gallinari, and M. Rajman (Eds.), Proceedings of the Workshop on Machine Learning and Textual Information Access, 4th European Conference on Principles and Practice of Knowledge Discovery in Databases (PKDD 2000), Lyon, France, pp. 1-13, 2000. The Ling-Spam corpus of the paper is available.
  41. K.V. Chandrinos, I. Androutsopoulos, G. Paliouras and C.D. Spyropoulos, "Automatic Web Rating: Filtering Obscene Content on the Web". In Borbinha, J. and Baker, T. (Eds.), Proceedings of the 4th European Conference on Research and Advanced Technology for Digital Libraries (ECDL 2000), Lisbon, Portugal, pp. 403-406, 2000.
  42. G. Paliouras, V. Karkaletsis, I. Androutsopoulos and C.D. Spyropoulos, "Learning Rules for Large-Vocabulary Word Sense Disambiguation: A Comparison of Various Classifiers". In Christodoulakis, D.N. (Ed.), Proceedings of the 2nd International Conference on Natural Language Processing (NLP 2000), Patra, Greece. Lecture Notes in Artificial Intelligence, 1835, pp. 383-394, Springer, 2000.
  43. I. Androutsopoulos, "Temporal Meaning Representations in a Natural Language Front-End". In Gergatsoulis, M. and Rondogiannis, P. (Eds.), Intensional Programming II (Proceedings of the 12th International Symposium on Languages for Intensional Programming, Athens, Greece, 1999), pp. 197-213, World Scientific, 2000. 
  44. G. Petasis, G. Paliouras, V. Karkaletsis, C.D. Spyropoulos and I. Androutsopoulos, "Resolving Part-of-Speech Ambiguity in the Greek Language Using Learning Techniques". In Fakotakis, N. et al. (Eds.), Machine Learning in Human Language Technology (Proceedings of the ACAI Workshop), pp. 29-34, Chania, Greece, 1999. 
  45. I. Androutsopoulos, G.D. Ritchie and P. Thanisch, "A Framework for Natural Language Interfaces to Temporal Databases". In Patel, M. (Ed.), Proceedings of the 20th Australasian Computer Science Conference, Sydney, Australia, pp. 307-315. Australian Computer Science Communications, vol. 19, no. 1, 1997.
  46. I. Androutsopoulos, G.D. Ritchie and P. Thanisch, "Experience Using TSQL2 in a Natural Language Interface". In Clifford, J. and Tuzhilin, A. (Eds.), Recent Advances in Temporal Databases (Proceedings of the International Workshop on Temporal Databases, Zurich, Switzerland), pp. 113-132. Workshops in Computing series, Springer-Verlag, 1995.
  47. I. Androutsopoulos, G.D. Ritchie and P. Thanisch, "MASQUE/SQL - An Efficient and Portable Natural Language Query Interface for Relational Databases". In Chung, P.W. Lovegrove, G. and Ali, M. (Eds.), Proceedings of the 6th International Conference on Industrial and Engineering Applications of Artificial Intelligence and Expert Systems, Edinburgh, U.K., pp. 327-330. Gordon and Breach Publishers, 1993.

System demonstrations at conferences

  1. D. Galanis, G. Karakatsiotis, G. Lampouras and I. Androutsopoulos, "An Open-Source Natural Language Generator for OWL Ontologies and its Use in Protege and Second Life". System demonstration, 12th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2009), Athens, Greece, 2009. See also this video.
  2. S. Konstantopoulos, A. Tegos, D. Bilidas, I. Androutsopoulos, G. Lampouras, P. Malakasiotis, C. Matheson and O. Deroo, "Adaptive Natural Language Interaction". System demonstration, 12th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2009), Athens, Greece, 2009. See also this video.
  3. G. Karakatsiotis, D. Galanis, G. Lampouras and I. Androutsopoulos, "NaturalOWL: Generating Texts from OWL Ontologies in Protege and in Second Life". System demonstration, 18th European Conference on Artificial Intelligence (ECAI 2008), Patras, Greece, 2008. See also this video.
  4. S. Konstantopoulos, I. Androutsopoulos, H. Baltzakis, V. Karkaletsis, C. Matheson, A. Tegos and P. Trahanias, "INDIGO: Interaction with Personality and Dialogue Enabled Robots". System demonstration, 18th European Conference on Artificial Intelligence (ECAI 2008), Patras, Greece, 2008. See also this video.
  5. V. Karkaletsis, G. Samaritakis, G. Petasis, D. Farmakiotou, I. Androutsopoulos, S. Markantonatou and C.D. Spyropoulos, "A Controlled Language Checker Based on the Ellogon Text Engineering Platform" (scenario). System demonstration, 2nd Meeting of the North American Chapter of the Association for Computational Linguistics (NAACL 2001), Carnegie Mellon University, Pittsburgh, USA, pp. 74-75 (companion volume), 2001.

Theses and dissertations

  1. I. Androutsopoulos, A Principled Framework for Constructing Natural Language Interfaces to Temporal Databases. PhD thesis, Department of Artificial Intelligence, University of Edinburgh, U.K., 1996. The software of the thesis is also available.
  2. I. Androutsopoulos, Interfacing a Natural Language Front-End to a Relational Database. MSc dissertation, Department of Artificial Intelligence, University of Edinburgh, U.K., 1992. The manual of the system that was developed for the dissertation is also available. I cannot provide the code of the system, because of copyright issues; please don't ask for it.
  3. I. Androutsopoulos, Construction of a Lexical and Syntax Analyzer for Modern Greek. Diploma dissertation, Department of Electrical Engineering, National Technical University of Athens, Greece, 1991 (in Greek).

Technical reports


Last update: July 29, 2014.