Ion Androutsopoulos

For suggested topics of new BSc or MSc projects (in Greek), see here.

The following theses of students I have supervised or co-supervised are available. Several of the theses are summarized in journal or conference articles; see my publications page. The software that accompanies some of the theses is available on this page and/or my publications page and/or the software and data page of AUEB's Natural Language Processing Group and/or the theses page of the group.

PhD theses

• T. Papadopoulos, "Natural language processing with deep learning for financial documents", PhD thesis, Department of Informatics, Athens University of Economics and Business (in progress).
• D. Tsirmpas, "Enhancing large language models for effective group interactions", PhD thesis, Department of Informatics, Athens University of Economics and Business (in progress).
• O. Chlapanis, "Deductive reasoning in natural language with deep learning methods and applications in legal documents and fact checking", PhD thesis, Department of Informatics, Athens University of Economics and Business (in progress).
• G. Moschovis, "Deductive reasoning in natural language with deep learning methods and applications in biomedical question answering systems", PhD thesis, Department of Informatics, Athens University of Economics and Business (in progress).
• C. Vlachos, "Deep learning for multilingual cross-domain spoken dialog systems in call centers", PhD thesis, Department of Informatics, Athens University of Economics and Business (in progress).
• S. Eleftheriou, "Multimodal machine learning in speech and language processing", PhD thesis, Department of Informatics, Athens University of Economics and Business (in progress).
• N. Nikolaidis, "Detecting and analyzing misinformation with natural language processing methods", PhD thesis, Department of Informatics, Athens University of Economics and Business (in progress).
• E. Loukas, "Natural language processing for business documents" (in English) [slides], PhD thesis, Department of Informatics, Athens University of Economics and Business, 2025.
• D. Pappas, "Deep neural networks for biomedical question answering" (in English) [slides], PhD thesis, Department of Informatics, Athens University of Economics and Business, 2023.
• I. Chalkidis, "Deep neural networks for information mining from legal texts" (in English) [slides], PhD thesis, Department of Informatics, Athens University of Economics and Business, 2021.
• A. Kosmopoulos, "Large scale hierarchical text classification" (in English) [slides], PhD thesis, Department of Informatics, Athens University of Economics and Business, 2015.
• G. Lampouras, "Natural language interaction with Semantic Web ontologies" (in English) [slides], PhD thesis, Department of Informatics, Athens University of Economics and Business, 2015.
• I. Pavlopoulos, "Aspect based sentiment analysis" (in English) [slides], PhD thesis, Department of Informatics, Athens University of Economics and Business, 2014.
• D. Galanis, "Automatic generation of natural language summaries" (in English), PhD thesis, Department of Informatics, Athens University of Economics and Business, 2012.
• P. Malakasiotis, "Paraphrase and textual entailment recognition and generation" (in English), PhD thesis, Department of Informatics, Athens University of Economics and Business, 2011.

MSc theses

• A. Chatzipapadopoulou, "Ensemble learning in uncertainty quantification for multi-label prediction: from theoretical foundations to medical image understanding" (in English), MSc thesis in Computer Science, Department of Informatics, Athens University of Economics and Business, 2025.
• K. Ntanas, "Improvements to the Online Cost-aware Teacher-Student (OCaTS) framework" (in English), MSc thesis in Computer Science, Department of Informatics, Athens University of Economics and Business, 2025.
• M. Samprovalaki, "Exploring multimodal large language models for medical image captioning" (in English), MSc thesis in Computer Science, Department of Informatics, Athens University of Economics and Business, 2024.
• P. Antoniozas, "Key information retrieval and borderless table location in scanned legal documents"(in English), MSc thesis in Data Science, Athens University of Economics and Business, 2024.
• D. Koutsianos, "Chain of thought prompting for intent classification using large language models" (in English), MSc thesis in Data Science, Athens University of Economics and Business, 2024.
• D. Mamakas, "Deep learning models for corporate event prediction: using text and financial indicators" (in English), MSc thesis in Computer Science, Department of Informatics, Athens University of Economics and Business, 2023.
• P. Kaliosis, "Exploring uni-modal, multi-modal and few-shot deep learning methods for diagnostic captioning" (in English), MSc thesis in Computer Science, Department of Informatics, Athens University of Economics and Business, 2023.
• I. Stogiannidis, "OCaTS: an online cost-aware teacher-student framework to reduce the calls to large language models" (in English), MSc thesis in Computer Science, Department of Informatics, Athens University of Economics and Business, 2023.
• C. Vlachos, "Automatic detection of sections and paragraphs in legal documents" (in English), MSc thesis in Data Science, Athens University of Economics and Business, 2022.
• F. Charalampakos, "Exploring deep learning methods for medical image tagging" (in English), MSc thesis in Computer Science, Department of Informatics, Athens University of Economics and Business, 2022.
• N. Gkouti, "Exploring the effects of stochastic gradient descent variants on Transformer models for natural language processing tasks" (in English), MSc thesis in Computer Science, Department of Informatics, Athens University of Economics and Business, 2022.
• N. Avramidou, "Examining how teacher-student approaches can benefit few-shot learning for toxicity detection tasks" (in English), MSc thesis in Computer Science, Department of Informatics, Athens University of Economics and Business, 2022.
• P. Tassias, "A prompting-based encoder-decoder approach to intent recognition and slot filling" (in English), MSc thesis in Data Science, Athens University of Economics and Business, 2021.
• A. Matrapazis, "Greek text-to-speech" (in English), MSc thesis in Data Science, Athens University of Economics and Business, 2021.
• B. Karatzas, "Exploring diagnostic captioning methods" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2021.
• A. Xenos, "Conversational context in toxicity detection" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2021.
• A. Katsiolis, "Toxic span detection in online posts" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2020.
• E. Xenouleas, "Exploring evaluation methods for automatically generated summaries" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2020.
• S. Kotitsas, "Neural graph representations and their application to link prediction" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2020.
• P. Stavropoulos, "Biomedical question qnswering" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2020.
• P. Ziazopoulos, "Intent classification of dialogues and dialogue turns" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2020.
• V. Palassopoulos, "Automatic text correction for chatbots" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2020.
• S. Mansalis, "Natural language understanding for dialogue systems using N-best lists" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2019.
• V. Kougia, "Medical image labeling and report reneration" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2019.
• K. Chairetakis, "An investigation of the explanatory power of attention mechanisms in deep learning methods for natural language processing" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2019.
• M. Kyriakakis, "Exploring deep neural network models of syntax with a focus on Greek" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2018.
• I. Koutsikakis, "Toxicity detection in user generated content" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2018.
• G. Brokos, "Document reranking with deep learning in information retrieval" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2018.
• P. Liosis, "Sentence selection from biomedical documents for question answering" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2018.
• A. Demiraj, "Aspect-based sentiment analysis for restaurants from reviews in the English language" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2018.
• D. Lolis, "Aspect-based sentiment analysis on electronics reviews in English" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2018.
• K. Korovesis, "Sentiment analysis for tweets" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2018.
• M. Papadaki, "Data augmentation techniques for legal text analytics" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2017.
• I. Andriopoulos, "Almosino Skeleton: A software engineering framework for question answering systems" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2017.
• I. Andronis, "Answer extraction from relevant snippets in a biomedical question answering system", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2017.
• S. Tryfona, "Document retrieval and reranking in biomedical question answering systems", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2017.
• D. Tsimpidi, "Text-based relation extraction from the Web" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2017.
• T. Asikis, "Part of speech tagging in Greek texts with word embeddings and deep neural networks" [software], MSc thesis, Department of Informatics, Athens University of Economics and Business, 2016.
• A. Malinakis, "Morphology aware word embeddings", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2016.
• M. Vougioukas, "A personalised system to predict retweets" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2016.
• D. Gkoumas, "Document re-ranking in a biomedical question answering system" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2016.
• M. Georgiou, "Relevant snippet extraction in biomedical question answering" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2015.
• D. Pappas, "Emotion recognition in spoken dialogues", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2015.
• D. Procopiou, "Spelling correction and normalization of product reviews", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2015.
• R.M. Karampatsis, "Social media sentiment analysis" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2014.
• G. Batistatos, "Classification of spoken dialogue utterances", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2013.
• I.G. Panagiotidis, "Designing and implementing museum exhibitions on the Semantic Web" (in English), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2012.
• D. Babaniotis, "Language models for morphologically complex languages", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2012.
• I. Lazari, "Automatic generation of product comparisons from users' reviews", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2011.
• G. Konstantinou, "Extracting and evaluating paraphrasing rules", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2011.
• N. Papanelopoulos, "Activity recognition from sensor readings", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2010.
• S. Antonellos, "Development of an adaptable named entity recognizer", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2009.
• G. Lampouras, "Methods to automatically detect definitions in document collections", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2008.
• G. Karakatsiotis, "Automatic generation of comparisons in a natural language generation system", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2007.
• M. Kolliarou, "Developing a question answering system for Greek newspaper archives", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2007.
• A. Kosmopoulos, "E-mail spam filtering with various forms of the Naive Bayes classifier and filter sharing among users", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2007. (Co-supervised with G. Paliouras of NCSR "Demokritos".)
• D. Galanis, "Development of a natural language generation engine for OWL ontologies", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2006.
• S. Kallonis, "Using existing ontologies and databases in the natural language generation system of the M-PIRO project", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2005. (Co-supervised with V. Karkaletsis of NCSR "Demokritos".)
• G. Lucarelli, "Named entity recognition and categorization in Greek texts", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2005.
• P. Malakasiotis, "Part-of-speech tagging in Greek texts using active learning techniques", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2005.
• I. Harlas, "Automatic extraction of bilingual lexicons from parallel text corpora", MSc thesis, Department of Informatics, Athens University of Economics and Business, 2005. (Co-supervised with S. Piperidis of the Institute for Language and Speech Processing.) The thesis is summarized in the SETN 2006 paper by I. Harlas and S. Piperidis.
• N. Tsichlas, "Part-of-speech tagging in Greek texts using machine learning techniques" (cover), MSc thesis, Department of Informatics, Athens University of Economics and Business, 2003.

BSc theses

• N. Mitsakis, "Leveraging retrieval-augmented generation for student support: a document-centric QA system for the AUEB Informatics Studies Guide" (in English), BSc thesis, Department of Informatics, Athens University of Economics and Business, 2025.
• I. Chasandras, "Retrieval augmented generation on regulatory documents" (in English), BSc thesis, Department of Informatics, Athens University of Economics and Business, 2025.
• I. Pantelidis, "Exploring post-training techniques for diagnostic captioning" (in English), BSc thesis, Department of Informatics, Athens University of Economics and Business, 2025.
• M. Schoinaki, "Improvements to the explanations of Ithaca's chronological attributions of ancient Greek inscriptions" (in English), BSc thesis, Department of Informatics, Athens University of Economics and Business, 2025.
• A. Chatzipapadopoulou, "Enhanced biomedical image tagging" (in English), BSc thesis, Department of Informatics, Athens University of Economics and Business, 2024.
• P. Karageorgis, "Data augmentation for legal document classification" (in English), BSc thesis, Department of Informatics, Athens University of Economics and Business, 2024.
• C. Trakas, "Explainability methods as a means of supporting medical findings" (in English), BSc thesis, Department of Informatics, Athens University of Economics and Business, 2022.
• G. Zachariadis, "Exploring uni-modal, cross-modal, and multi-modal diagnostic captioning", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2022.
• P. Tsotsi, "Exploration of efficient Transformer methods for long legal document processing", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2022.
• D. Mamakas, "Bag of words BERT-based models for large legal document classification", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2022.
• V. Vythoulkas, "Reformulating named entity recognition", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2022.
• M. Vazaios, "Link prediction for a COVID-19-related knowledge graph", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2021.
• F. Charalampakos, "Medical image tagging", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2021.
• C. Dikonimaki, "A Transformer-based natural language processing toolkit for Greek -- Part of speech tagging and dependency parsing" [software], BSc thesis, Department of Informatics, Athens University of Economics and Business, 2021.
• N. Smyrnioudis, "A Transformer-based natural language processing toolkit for Greek -- Named entity recognition and multi-task learning" [software], BSc thesis, Department of Informatics, Athens University of Economics and Business, 2021.
• V. Karatzas, "Medical image tagging and language modeling", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2020.
• A. Xenos, "Context-aware toxicity detection", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2020.
• I. Koutsikakis, "Textual entailment recognition with deep learning" [software], BSc thesis, Department of Informatics, Athens University of Economics and Business, 2016.
• M. Evaggelakaki, "Generating natural language texts from biomedical ontologies with the NaturalOWL system", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2014.
• M. Vougioukas, "Development of a system to filter tweets", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2014.
• V. Kalogiras, "Statistical machine translation from Ancient Greek to English", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2014.
• R.M. Karampatsis, "Named entity recognition in Greek texts of social media", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2012.
• A. Koukio, "Controlled natural language question-answering for OWL ontologies", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2012.
• E. Koleli, "A new Greek part-of-speech tagger, based on a maximum entropy classifier", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2011.
• G. Liassas, "Automatic generation of summaries from blogs", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2010.
• K. Markantoni, "Improvements to the NaturalOWL natural language generation system", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2009.
• C. Pappas, "Reimplementation, improvement, evaluation, and documentation of a Greek part-of-speech tagger that uses machine learning", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2008.
• D. Bochtis, "Development of an e-mail filter for Mozilla Thundirbird", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2007.
• E. Iliopoulou, "Word sense disambiguation via a combination of Spreading Activation Networks and PageRank", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2007.
• J. Konstas, "Recognition and categorization of person, organization and location names in Greek texts using Support Vector Machines", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2007.
• H. Vrisagotis, "Automatic classification of Greek questions into categories", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2007.
• I. Chronakis, "Extensions and further evaluation of a part-of-speech tagger for Greek texts", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2006.
• G. Lampouras, "Revision and larger-scale experimental evaluation of a method to handle definition questions in question answering systems", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2006.
• X. Vasilakos, "Named entity recognition and categorization in Greek texts with Support Vector Machines"", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2006.
• E. Giakoumis, "Improvements and further evaluation of a method to handle definition questions in natural language question answering systems", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2005.
• G. Karakatsiotis, "Developing a system to handle person definition questions for newspaper archives", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2005.
• D. Mavroeidis, "Automatic classification of natural language questions into categories", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2005.
• D. Galanis, "Automatic construction of training examples to handle definition questions in question answering systems that use machine learning", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2004.
• T. Nikolaou, "Improvements in the user interface and other functions of the M-PIRO authoring tool", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2004.
• M. Prospathopoulou, "Improvements in the exporting, the microplans and other functions of the M-PIRO authoring tool", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2004.
• S. Miliaraki, "Handling definition questions in question answering systems", BSc thesis, Department of Informatics, Athens University of Economics and Business, 2003.
• E. Michelakis, "Automatic filtering of unwanted e-mail with machine learning algorithms", BSc thesis, Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, 2002.
• G. Sakkis, "Automatic classification of e-mail messages into categories", BSc thesis, Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, 2001.