Summary of Research Activities: During the UROP, I focused on the intersection of abductive reasoning and knowledge graphs. My research aimed to explore the largely uncharted territory of generating complex logical hypotheses to explain observations using structured knowledge. We introduced a new task for hypothesis generation and discovered that while a supervised generative model could produce hypotheses closely aligned with reference examples, it struggled with generalization to unseen data. To enhance this, we developed the Reinforcement Learning from Knowledge Graph (RLF-KG) method, which effectively minimized discrepancies between observations and conclusions derived from the generated hypotheses. Through experiments, we demonstrated that RLF-KG signi cantly improved the quality of explanations provided by the hypotheses, achieving state-of-the-art results on three prominent knowledge graphs. This experience deepened my understanding of logical reasoning, machine learning, and the practical applications of knowledge graphs in arti cial intelligence. Summary of Research Activities: My research activities concerning ACL-2024 involve participating in the DialAM-2024 workshop (the rst shared task in dialogical argument mining), submitting a workshop paper to ACL-2024 and making a virtual poster presentation at the conference. I gained valuable insights into the latest advancements in natural language processing and machine learning. I also learned about innovative techniques in language modeling, including transformer architectures and their applications in various linguistic tasks. My presentation skills also improved during my preparation for the poster talk at the conference. Overall, the conference enriched my understanding of both the technical and social dimensions of computational linguistics. WANG Yicheng Major : COSC Supervised by : Prof. SONG Yangqiu / CSE Conference : 62nd Annual Meeting of the Association for Computational Linguistics Venue : Bangkok, Thailand Duration : August 11–16, 2024 ZHOU Yukai Major : MATH & COSC Supervised by : Prof. SONG Yangqiu / CSE Conference : 62nd Annual Meeting of the Association for Computational Linguistics Venue : Virtual participation Duration : August 11–16, 2024 Yicheng (in square) xiii
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