Rafal Rzepka

Rafal Rzepka is an Associate Professor at Hokkaido University's Faculty of Information Science and Technology, where he leads the Language Media Lab and serves as Associate Editor for Information Processing & Management. With a prolific research output of 322 publications and significant citation impact, his work bridges theoretical NLP with practical applications in ethical AI systems.

His research interests span multiple interconnected domains in artificial intelligence, with primary focus on Natural Language Processing, Machine Ethics, Common Sense Knowledge acquisition, and Affect Processing. He has pioneered work in Artificial Humor, Metaphor Understanding and Generation, Cyber-bullying Detection, and recently expanded into Speciesism analysis in language models. His approach combines computational linguistics with cognitive science to develop systems that better understand human behavior and values.

Analysis of his recent publications reveals a strong trend toward ethical AI applications, with significant work on bias detection (including fame bias and speciesism), cross-cultural ethics, and moral decision-making frameworks. His research increasingly focuses on practical implementations of ethical AI in security contexts, medical diagnostics through speech analysis, and regulatory compliance systems.

Rafal Rzepka's work demonstrates consistent innovation in extracting meaningful patterns from language to address complex social and ethical challenges. His research bridges theoretical advances in NLP with real-world applications that improve AI safety, fairness, and human-AI interaction.

As an active researcher, he collaborates across multiple institutions and disciplines, with recent work spanning Japanese, English, Polish, French, and Chinese language contexts. His contributions to developing evaluation datasets like JETHICS provide important resources for the broader AI ethics community.