Expanding Foundational Language Capabilities in Open-Source LLMs through a Korean Case Study. - Junghwan Lim; Gangwon Jo; Sungmin Lee; Jiyoung Park; Dongseok Kim; Jihwan Kim; Junhyeok Lee; Wai Ting Cheung; Dahye Choi; Kibong Choi; Jaeyeon Huh; Beomgyu Kim; et al. (CoRR, 2025)