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• Closing Keynote Panel: The Evolution and Future of AI: From GenAI to Quantum AI and the Tech Revolution. At CDO AI Benelux Summit, June 12, 2025.
  
• What does it take to become an AI-enabled organisation? At Sustain 2025, March 14, 2025.
  
• Shared Task for Cross-lingual Classification of Corporate Social Responsibility (CSR) Themes and Topics. The Joint Workshop of the 7th Financial Technology and Natural Language Processing, the 5th Knowledge Discovery from Unstructured Data in Financial Services, and the 4th Workshop on Economics and Natural Language Processing. Turin, Italy, May 20, 2024.
• Ethical AI Governance: Navigating the Moral Landscape of Data and Artificial Intelligence. At CDO AI Benelux Summit, June 4, 2024.
  
• Career development in Data Science and AI. Invited presentation (Pathways), 2021.
• AIOps: from descriptive to prescriptive analytics. In Rabo IT Seminar, 2019.
• Prescriptive Analytics: Methodologies and Challenges. 12th Data Science NL Meetup, 2019.
• Textual Entailment: Approaches and Challenges. Invited talk at Utrechtse Studentenvereniging voor Cognitieve Kunstmatige Intelligentie. March 21, 2012.
• Semantic Relations and Textual Entailment. At LT-Seminar at the University of Oslo, Norway. September 7, 2011.
• Using Local Alignments for Relation Recognition. At TextKernel, November 12, 2010.
• Distributional information and sequence alignment in NLP. Invited talk in the Distributional Semantics Workshop. Groningen, the Netherlands. June 2010.
• Rademacher Complexity and Grammar Induction: What It May (Not) Tell Us. ICGI 2010. Valencia, Spain. September 2010.
• What can Rademacher complexity tell us about language acquisition? In the 11th Szklarska Poreba Workshop. Szklarska Poreba, Poland. March 11-15, 2010.
• Finding Constraints for Semantic Relations. CLIN 2010. Utrecht, the Netherlands. February 2010.
• Semantic Types of Some Generic Relation Arguments: Detection and Evaluation. The 46th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL/HLT), 2008. Columbus, USA. June 2008.
• A Local Alignment Kernel in the Context of NLP. The 22nd International Conference on Computational Linguistics (Coling). Manchester, UK. August 2008.
• Qualia Structures and their Impact on the Concrete Noun Categorization Task. "Bridging the gap between semantic theory and computational simulations" workshop at ESSLLI 2008. Hamburg, Germany. August, 2008.
• De vroege identificatie van risico's voor de voedselveiligheid. With Fred van de Brug. In Food Knowledge Symposium. Amsterdam, the Netherlands. November 2008.
• Towards Incorporating Semantic Information into Relation Learning Task. In Tbilisi 2007: Seventh International Tbilisi Symposium on Language, Logic and Computation. Tbilisi, Georgia. September 2007.
• Grammatical Inference in Practice: A Case Study in the Biomedical Domain. The 8th International Colloquium on Grammatical Inference (ICGI). Tokyo, Japan. September 21, 2006.
• Using Maximal Embedded Syntactic Subtrees for Textual Entailment Recognition. RTE-2 workshop, Venice, Italy. April 10, 2006.
• Tree-based techniques for learning ontologies. In "Adaptive Ontologien auf syntaktischen Strukturen" workshop, 28. Jahrestagung der DGfS (Deutsche Gesellschaft für Sprachwissenschaft). Bielefeld, Germany. February 24, 2006.
• Learning Biological Interactions from Medline Abstracts. The ICML'05 workshop "Learning Language in Logic". Bonn, Germany. August 2005.
• Corpora: schemes and peculiarities of annotation. Invited talk in "Ukrainian national corpus: goal and ways of construction". April, Kyiv, 2004.
• Die Erkennung der deutschsprachigen Spam-Emails: Naïve-Bayes vs.ähnlichkeitsbasiertes Lernen. FGML'2003 - Treffen der Fachgruppe Maschinelles Lernen, Wissensentdeckung und Data Mining der Gesellschaft für Informatik. Karlsruhe. October 2003.
• Question Classification Using Machine Learning Techniques. In "New Methods in Data-Based Computational Linguistics". Tübingen, Germany. July 2003.
• Filtering Spam Mail Using Memory-Based Learning (TiMBL). Presentations in Information Retrieval (with A. Hedstrom, Ch. Larsson). Tübingen, Germany. May 29-31, 2003.
• Vagueness of Linguistic Experiment. The summer school "Empirical Linguistics and Natural Language Processing". Sozopol, Bulgaria. September 2002.