Publications

See also the personal pages of the group's members, which may list additional publications.

2017

  • J. Pavlopoulos, P. Malakasiotis and I. Androutsopoulos, "Deeper Attention to Abusive User Content Moderation". Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP 2017), Copenhagen, Denmark, pp. 1136-1146, 2017. [PDF] [Slides] [Data]
  • J. Pavlopoulos, P. Malakasiotis, J. Bakagianni and I. Androutsopoulos, "Improved Abusive Comment Moderation with User Embeddings". Proceedings of the workshop Natural Language Processing Meets Journalism, at the Conference on Empirical Methods in Natural Language Processing (EMNLP 2017), Copenhagen, Denmark, pp. 51-55, 2017. [PDF] [Slides] [Data]
  • J. Pavlopoulos, P. Malakasiotis and I. Androutsopoulos, "Deep Learning for User Comment Moderation". Proceedings of the 1st Workshop on Abusive Language Online (ALW1), at the 55th Annual Meeting of the Association for Computational Linguistics (ACL 2017), pp. 25-35, Vancouver, Canada, 2017. [PDF] [Slides] [Data]
  • M. Vougioukas, I. Androutsopoulos and G. Paliouras, "A Personalized Global Filter To Predict Retweets". Proceedings of the 25th Conference on User Modeling, Adaptation and Personalization (UMAP 2017), Bratislava, Slovakia, pp. 393-394, 2017. [PDF] [Extended Version]
  • I. Chalkidis, I. Androutsopoulos and A. Michos, "Extracting Contract Elements". Proceedings of the 16th International Conference on Artificial Intelligence and Law (ICAIL 2017), London, UK, pp. 19-28, 2017. [Preprint PDF] [Data]

2016

  • A. Kosmopoulos, I. Androutsopoulos and G. Paliouras, "Biomedical Semantic Indexing using Dense Word Vectors in BioASQ". Journal of Biomedical Semantics, supplement on Semantics-Enabled Biomedical Information Retrieval, 2016 (to appear). [PDF]
  • G. Brokos, P. Malakasiotis and I. Androutsopoulos, "Using Centroids of Word Embeddings and Word Mover's Distance for Biomedical Document Retrieval in Question Answering". Proceedings of the 15th Workshop on Biomedical Natural Language Processing (BioNLP 2016), at the 54th Annual Meeting of the Association for Computational Linguistics (ACL 2016), Berlin, Germany, pp. 114-118, 2016. [PDF] [Software]
  • M. Pontiki, D. Galanis, H. Papageorgiou, I. Androutsopoulos, S. Manandhar, M. AL-Smadi, M. Al-Ayyoub, Y. Zhao, B. Qin, O. De Clercq, V. Hoste, M. Apidianaki, X. Tannier, N. Loukachevitch, E. Kotelnikov, N. Bel, S.M. Jimenez-Zafra and G. Eryigit, "SemEval-2016 Task 5: Aspect Based Sentiment Analysis". Proceedings of the 10th International Workshop on Semantic Evaluation (SemEval 2016), San Diego, CA, USA, pp. 19-30, 2016. [PDF]
  • S. Giorgis, A. Rousas, J. Pavlopoulos, P. Malakasiotis and I. Androutsopoulos, "aueb.twitter.sentiment at SemEval-2016 Task 4: A Weighted Ensemble of SVMs for Twitter Sentiment Analysis". Proceedings of the 10th International Workshop on Semantic Evaluation (SemEval 2016), San Diego, CA, USA, pp. 96-99, 2016. [PDF]
  • D. Xenos, P. Theodorakakos, J. Pavlopoulos, P. Malakasiotis and I. Androutsopoulos, "AUEB-ABSA at SemEval-2016 Task 5: Supervised Machine Learning for Aspect Based Sentiment Analysis". Proceedings of the 10th International Workshop on Semantic Evaluation (SemEval 2016), San Diego, CA, USA, pp. 324-329, 2016. [PDF]

2015

  • D. Pappas, I. Androutsopoulos and H. Papageorgiou, "Anger Detection in Call Center Dialogues". Proceedings of the 6th IEEE Conference on Cognitive Infocommunications (CogInfoCom 2015), Györ, Hungary, 2015. [PDF]
  • P. Malakasiotis, E. Archontakis, I. Androutsopoulos, D. Galanis and H. Papageorgiou, "Biomedical Question-Focused Multi-Document Summarization: ILSP and AUEB at BioASQ3". Proceedings of the QA Lab of the 6th Conference and Labs of the Evaluation Forum (CLEF 2015), Toulouse, France, 2015. [PDF]
  • M. Pontiki, D. Galanis, H. Papageorgiou, S. Manandhar and I. Androutsopoulos, "SemEval-2015 Task 12: Aspect Based Sentiment Analysis". Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015), at the Conference of the North American Chapter of the Association for Computational Linguistics - Human Language Technologies (NAACL HLT 2015), Denver, Colorado, USA, pp. 486-495, 2015. [PDF]
  • G. Tsatsaronis, G. Balikas, P. Malakasiotis, I. Partalas, M. Zschunke, M.R. Alvers, D. Weissenborn, A. Krithara, S. Petridis, D. Polychronopoulos, Y. Almirantis, J. Pavlopoulos, N. Baskiotis, P. Gallinari, T. Artieres, A. Ngonga, N. Heino, E. Gaussier, L. Barrio-Alvers, M. Schroeder, I. Androutsopoulos and G. Paliouras, "An Overview of the BIOASQ Large-Scale Biomedical Semantic Indexing and Question Answering Competition". BMC Bioinformatics, 16:138, 2015. [PDF]
  • A. Kosmopoulos, I. Partalas, E. Gaussier, G. Paliouras and I. Androutsopoulos, "Evaluation Measures for Hierarchical Classification: A Unified View and Novel Approaches". Data Mining and Knowledge Discovery, 29:820-865, 2015. [Download as published] [Download final manuscript]

2014

  • 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, pp. 160-171, 2014. [PDF]
  • 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. [PDF]
  • R. M. Karampatsis, J. Pavlopoulos and P. Malakasiotis, "AUEB: Two Stage Sentiment Analysis of Social Network Messages". Proceedings of the 8th International Workshop on Semantic Evaluation (SemEval 2014), at the 25th International Conference on Computational Linguistics (COLING 2014), Dublin, Ireland, pp. 114-118, 2014. [PDF]
  • A-C. Ngonga Ngomo, N. Heino, R. Speck and P. Malakasiotis, "A Tool Suite for Creating Question Answering Benchmarks". Proceedings of the 9th International Conference on Language Resources and Evaluation (LREC 2014), Reykjavik, Iceland, pp. 2621-2628, 2014. [PDF]
  • P. Alexopoulos and J. Pavlopoulos, "A Vague Sense Classifier for Detecting Vague Definitions in Ontologies". Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2014), Gothenburg, Sweden, pp. 33-37 (short papers), 2014. [PDF]
  • J. Pavlopoulos and I. Androutsopoulos, "Aspect Term Extraction for Sentiment Analysis: New Datasets, New Evaluation Measures and an Improved Unsupervised Method". 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. [PDF] [Slides]
  • J. Pavlopoulos and I. Androutsopoulos, "Multi-Granular Aspect Aggregation in Aspect-Based Sentiment Analysis". Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2014), Gothenburg, Sweden, pp. 78-87, 2014. [PDF] [Slides] [Dataset]

2013

  • P. Malakasiotis, R.-M. Karampatsis, N. Makrynioti, and J. Pavlopoulos, "nlp.cs.aueb.gr: Two Stage Sentiment Analysis", 2nd Joint Conference on Lexical and Computational Semantics, (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013), Atlanta, Georgia, U.S.A, 2013. [PDF]
  • 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. [PDF]
  • 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. [PDF]
  • 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. [PDF]

2012

  • I. Androutsopoulos, G. Lampouras and D. Galanis, "Generating Natural Language Descriptions from OWL Ontologies: A Detailed Presentation of the NaturalOWL System". Technical Report, Natural Language Processing Group, Department of Informatics, Athens University of Economics and Business, 2012. [PDF]
  • D. Galanis, G. Lampouras and I. Androutsopoulos, "Extractive Multi-Document Summarization with Integer Linear Programming and Support Vector Regression". Proceedings of the 24th International Conference on Computational Linguistics (COLING 2012), Mumbai, India, 2012. [PDF] [Slides]
  • 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. [PDF]
  • P. Alexopoulos, J. Pavlopoulos and Ph. Mylonas, "Learning Vague Knowledge From Socially Generated Content in an Enterprise Framework". Proceedings of the 1st Mining Humanistic Data Workshop (MHDW 2012), Halkidiki, Greece, 2012. [PDF]
  • G. Anadiotis, K. Kafentzis, J. Pavlopoulos and A. Westerski, "Building Consensus via a Semantic Web Collaborative Space". Proceedings of the Semantic Web Collaborative Spaces Workshop (SWCS), 21st International World Wide Web Conference (WWW 2012), Lyon, France, pp. 1097-1106, 2012. [PDF]
  • 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. [PDF]

2011

  • P. Alexopoulos, J. Pavlopoulos, M. Wallace, and K. Kafentzis, "Exploiting ontological relations for automatic semantic tag recommendation". Proceedings of the 7th International Conference on Semantic Systems (I-Semantics '11), New York, NY, USA, pp. 105-110, 2011. [PDF]
  • 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), Conference on Empirical Methods on Natural Language Processing (EMNLP 2011), Edinburgh, UK, pp. 1-11, 2011. [PDF][Slides]
  • P. Malakasiotis and I. Androutsopoulos, "A Generate and Rank Approach to Sentence Paraphrasing". Proceedings of the 2011 Conference on Empirical Methods on Natural Language Processing (EMNLP 2011), Edinburgh, UK, pp. 96-106, 2011. [PDF][Slides][Dataset]

2010

  • I. Androutsopoulos and P. Malakasiotis, "A Survey of Paraphrasing and Textual Entailment Methods". Journal of Artificial Intelligence Research, 38:135-187, 2010. [PDF]
  • D. Galanis and I. Androutsopoulos, "An Extractive Supervised Two-Stage Method for Sentence Compression". 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, 2010. [PDF][Slides]

2009

  • P. Malakasiotis, "AUEB at TAC 2009". Text Analysis Conference (TAC 2009) , Gaithersburg, Maryland, USA, 2009. [PDF]
  • 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. [PDF]
  • G. Lampouras and I. Androutsopoulos, "Finding Short Definitions of Terms on Web Pages". Proceedings of the 2009 Conference on Empirical Methods on Natural Language Processing (EMNLP 2009 at ACL/IJCNLP 2009), Suntec, Singapore, 2009. [PDF][Slides][Poster]
  • P. Malakasiotis, "Paraphrase Recognition Using Machine Learning to Combine Similarity Measures". Proceedings of the Student Research Workshop, Joint conference of the 47th Annual Meeting of the Association for Computational Linguistics and the 4th International Joint Conference on Natural Language Processing (ACL-IJCNLP 2009), Singapore, 2009. [PDF][Slides]
  • 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. [PDF]
  • 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. [PDF]

2008

  • D. Galanis and P. Malakasiotis, "AUEB at TAC 2008". Text Analysis Conference (TAC 2008), Gaithersburg, Maryland, USA, 2008. [PDF]
  • 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. [PDF]
  • 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. [PDF]
  • 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 2009), Patras, Greece, 2008. [PDF]
  • 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 2009), Patras, Greece, 2008. [PDF]
  • 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. [PDF]
  • J. Oberlander, G. Karakatsiotis, A. Isard and I. Androutsopoulos, "Building an Adaptive Museum Gallery in Second Life". Proceedings of Museums and the Web, Montreal, Quebec, Canada, 2008. [PDF]

2007

  • 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. [PDF]
  • 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. [PDF]
  • 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. [PDF]
  • 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. [PDF]
  • G. Lucarelli, X. Vasilakos and I. Androutsopoulos, "Named Entity Recognition in Greek Texts with an Ensemble of SVMs and Active Learning". International Journal on Artificial Intelligence Tools, 16(6):1015-1045, World Scientific, 2007. [PDF (pre-print)]
  • I. Androutsopoulos, J. Oberlander and V. Karkaletsis, "Source Authoring for Multilingual Generation of Personalised Object Descriptions". Natural Language Engineering, 13(3):191-233, Cambridge University Press, 2007. [PDF]

2006

  • V. Metsis, I. Androutsopoulos and G. Paliouras, "Spam Filtering with Naive Bayes -- Which Naive Bayes?". Proceedings of the 3rd Conference on Email and Anti-Spam (CEAS 2006), Mountain View, CA, USA, 2006. [PDF]
  • 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. [PDF]

2005

  • 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". In O. Stock and M. Zancanaro (Eds.), Multimodal Intelligent Information Presentation, pp. 177-201, Springer, 2005. [PDF (pre-print)]
  • 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. [PDF]
  • 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. [PDF]
  • 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. [PDF]

2004

  • 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. [PDF] [PDF of longer technical report]
  • 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. [PDF]

2003

  • 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.
  • A. Isard, J. Oberlander, I. Androutsopoulos and C. Matheson, "Speaking the Users' Languages". IEEE Intelligent Systems, 18(1):40-45, 2003. [PDF]
  • 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, Kluwer, 2003. [PDF]
  • 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. [PDF]

2002

  • I. Androutsopoulos, Exploring Time, Tense and Aspect in Natural Language Database Interfaces, John Benjamins, 2002.