Publications

Journal articles

  1. 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.
  2. I. Androutsopoulos and P. Malakasiotis, "A Survey of Paraphrasing and Textual Entailment Methods". Journal of Artificial Intelligence Research, 38:135-187, 2010.

Conference & workshop articles

  1. N. Gkouti, P. Malakasiotis, S. Toumpis, and I. Androutsopoulos, "Should I try multiple optimizers when fine-tuning pre-trained Transformers for NLP tasks? Should I tune their hyperparameters?". Proceedings of the 18th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2024), Malta, 2024
  2. I. Stogiannidis, S. Vassos, P. Malakasiotis, and I. Androutsopoulos, "Cache me if you Can: an Online Cost-aware Teacher-Student framework to Reduce the Calls to Large Language Models". Findings of the Conference on Empirical Methods in Natural Language Processing (EMNLP 2023), Singapore, 2023
  3. L. Loukas, I. Stogiannidis, O. Diamantopoulos, P. Malakasiotis, and S. Vassos, "Making LLMs Worth Every Penny: Resource-Limited Text Classification in Finance". Proceedings of the 4th ACM International Conference on AI in Finance (ICAIF 2023), New York, NY, USA, 2023
  4. L. Loukas, I. Stogiannidis, P. Malakasiotis and S. Vassos, "Breaking the Bank with ChatGPT: Few-Shot Text Classification for Finance". Proceedings of the Joint Workshop of the 5th Financial Technology and Natural Language Processing (FinNLP) and the 2nd Multimodal AI for Financial Forecasting (Muffin) at the 32nd International Joint Conference on Artificial Intelligence (IJCAI 2023), Macao, China, 2023
  5. S. Maroudas, S. Legkas, P. Malakasiotis and I. Chalkidis, "Legal-Tech Open Diaries: Lesson learned on how to develop and deploy light-weight models in the era of humongous Language Models". Proceedings of the Workshop on Natural Legal Language Processing (NLLP) 2022 at the 2022 Conference on Empirical Methods in Natural Language Processing (EMNLP), Abu Dhabi, UAE, 2022
  6. I. Chalkidis, X. Dai, M. Fergadiotis, P. Malakasiotis and D. Elliott, "An Exploration of Hierarchical Attention Transformers for Efficient Long Document Classification". ArXiv Pre-print, 2022
  7. D. Pappas, P. Malakasiotis and I. Androutsopoulos, "Data Augmentation for Biomedical Factoid Question Answering". Proceedings of the 19th Workshop on Biomedical Natural Language Processing (BioNLP 2022) at the 58th Annual Meeting of the Association for Computational Linguistics (ACL 2022), Dublin, Ireland, 2022.
  8. L. Loukas, M. Fergadiotis, I. Chalkidis, E. Spyropoulou, I. Androutsopoulos, P. Malakasiotis and G. Paliouras, "FiNER: Financial Numeric Entity Recognition for XBRL Tagging". Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics (ACL 2022), Dublin, Ireland, 2022.
  9. L. Loukas, M. Fergadiotis, I. Androutsopoulos and P. Malakasiotis, "EDGAR-CORPUS: Billions of Tokens Make The World Go Round". Proceedings of the Economics and Natural Language Processing Workshop (ECONLP 2021) at the Conference on Empirical Methods in Natural Language Processing (EMNLP 2021), Punta Cana, Dominican Republic, 2021.
  10. I. Chalkidis, M. Fergadiotis, D. Tsarapatsanis, N. Aletras, I. Androutsopoulos and P. Malakasiotis, "Paragraph-level Rationale Extraction through Regularization: A case study on European Court of Human Rights Cases". Proceedings of the Annual Conference of the North American Chapter of the Association for Computational Linguistics (NAACL-HLT 2021), held on-line, 2021.
  11. I. Chalkidis, M. Fergadiotis, N. Manginas, E. Katakalou and P. Malakasiotis, "Regulatory Compliance through Doc2Doc Information Retrieval: A case study in EU/UK legislation where text similarity has limitations". Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2021), held on-line, 2021.
  12. I. Chalkidis, M. Fergadiotis, S. Kotitsas, P. Malakasiotis, N. Aletras and I. Androutsopoulos, "An Empirical Study on Large-Scale Multi-Label Text Classification Including Few and Zero-Shot Labels". Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP 2020), held on-line, 2020.
  13. I. Chalkidis, M. Fergadiotis, P. Malakasiotis, N. Aletras and I. Androutsopoulos, "LEGAL-BERT: The Muppets straight out of Law School". Findings of the Conference on Empirical Methods in Natural Language Processing (EMNLP 2020), 2020. [HuggingFace]
  14. N. Manginas, I. Chalkidis and P. Malakasiotis, "Layer-wise Guided Training for BERT: Learning Incrementally Refined Document Representations". Proceedings of the Workshop on Structured Prediction for NLP (SPNLP 2020) at the Conference on Empirical Methods in Natural Language Processing (EMNLP 2020), held on-line, 2020.
  15. J. Koutsikakis, I. Chalkidis, P. Malakasiotis and I. Androutsopoulos, "GREEK-BERT: The Greeks visiting Sesame Street". Proceedings of the 11th Hellenic Conference on Artificial Intelligence (SETN 2020), held on-line, 2020. [Slides, Code, HuggingFace]
  16. I. Chalkidis, M. Fergadiotis, P. Malakasiotis and I. Androutsopoulos, "Neural Contract Element Extraction Revisited". Proceedings of the Document Intelligence Workshop (DI 2019) at the Thirty-third Conference on Neural Information Processing Systems (NeurIPS 2019), Vancouver, Canada, 2019. [Poster, Updated Version]
  17. S. Xenouleas, P. Malakasiotis, M. Apidianaki and I. Androutsopoulos, "SumQE: a BERT-based Summary Quality Estimation Model". Proceedings of the Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP 2019), Hong Kong, China, 2019. [Supplementary material, Poster, Software]
  18. I. Chalkidis, M. Fergadiotis, P. Malakasiotis and I. Androutsopoulos, "Large-Scale Multi-Label Text Classification on EU Legislation". Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics (ACL 2019), Florence, Italy, 2019.
  19. I. Chalkidis, M. Fergadiotis, P. Malakasiotis, N. Aletras and I. Androutsopoulos, "Extreme Multi-Label Legal Text Classification: A Case Study in EU Legislation". Proceedings of the Workshop on Natural Legal Language Processing (NLLP 2019) of the Annual Conference of the North American Chapter of the Association for Computational Linguistics (NAACL-HLT 2019), Minneapolis, USA, 2019.
  20. 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. [Slides, Dataset]
  21. 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. [Slides, Dataset]
  22. 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), Vancouver, Canada, pp. 25-35, 2017. [Slides, Dataset]
  23. 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. [Software]
  24. 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.
  25. 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.
  26. 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 Sixth Conference and Labs of the Evaluation Forum (CLEF 2015), Toulouse, France, 2015.
  27. R. M. Karampatsis, J. Pavlopoulos and P. Malakasiotis, "AUEB: Two Stage Sentiment Analysis of Social Network Messages". Proceedings of the Eighth International Workshop on Semantic Evaluation (SemEval 2014), Dublin, Ireland, pp. 114-118, 2014.
  28. A-C. Ngonga Ngomo, N. Heino, R. Speck and P. Malakasiotis A Tool Suite for Creating Question Answering Benchmarks. Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14), Reykjavik, Iceland, 2014.
  29. P. Malakasiotis, R. M. Karampatsis, K. Makrynioti and J. Pavlopoulos, "nlp.cs.aueb.gr: Two Stage Sentiment Analysis". Second Joint Conference on Lexical and Computational Semantics (*SEM), Volume 2: Proceedings of the Seventh International Workshop on Semantic Evaluation (SemEval 2013), Atlanta, Georgia, USA, pp. 96-106, 2013.
  30. P. Malakasiotis and I. Androutsopoulos, "A Generate and Rank Approach to Sentence Paraphrasing". Proceedings of the Conference on Empirical Methods on Natural Language Processing (EMNLP 2011), Edinburgh, UK, pp. 96-106, 2011. [Dataset].
  31. P. Malakasiotis, "AUEB at TAC 2009". Text Analysis Conference (TAC 2009), Gaithersburg, Maryland, USA, 2009.
  32. P. Malakasiotis, "Paraphrase Recognition Using Machine Learning to Combine Similarity Measures". Proceedings of the ACL-IJCNLP 2009 Student Research Workshop, Suntec, Singapore, pp. 27-35, 2009. [Slides]
  33. D. Galanis and P. Malakasiotis, "AUEB at TAC 2008". Text Analysis Conference (TAC 2008), Gaithersburg, Maryland, USA, 2008.
  34. 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.
  35. V. Lin, V. Vassalos and P. Malakasiotis, "MiniCount: Efficient Rewriting of COUNT-Queries Using Views". Proceedings of the 22nd International Conference on Data Engineering, (ICDE 2006), Atlanta, GA, USA, 2006.

Conference demos

  1. 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.

Patents

  1. E. P. Loukas, E. Spyropoulou, P. Malakasiotis, E. Fergadiotis, I. Chalkidis, I. Androutsopoulos, and G. Paliouras, "System and Method for Automatically Tagging Documents". Patent No: US 2023/0028664 A1, USA, 2023.

Theses

  1. P. Malakasiotis, "Paraphrase and textual entailment recognition and generation". PhD thesis, Department of Informatics, Athens University of Economics and Business, 2011.
  2. P. Malakasiotis, "Part-of-speech tagging in Greek texts using active learning techniques". MSc thesis, Department of Informatics, Athens University of Economics and Business, Greece, 2005.