Professor Lee is the Program Director of Data Science and AI programs. His research interests are in machine learning, artificial intelligence, natural language processing, information retrieval, and social computing. He is broadly interested in conducting research on emerging topics and practical applications that have real-world impact. Currently, his research focuses on improving the safety and trustworthiness of AI systems to enhance information quality and trust (e.g., LLM safety), developing next-generation algorithms and architectures (e.g., efficient LLMs and recommender systems), and applying AI for social good (e.g., disrupting wildlife trafficking networks).