Characterizing Pattern Matching and Its Limits on Compositional Task Structures - Chang, Hoyeon; Park, Jinho; Cho, Hanseul; Yang, Sohee; Ko, Miyoung; Hwang, Hyeonbin; Won, Seungpil; Lee, Dohaeng; Ahn, Youbin; Seo, Minjoon (International Conference on Learning Representations, 2026)