Language Models Are Polyglots: Language Similarity Predicts Cross-Lingual Transfer Learning Performance. - Juuso Eronen; Michal Ptaszynski; Tomasz Wicherkiewicz; Robert Borges; Katarzyna Janic; Zhenzhen Liu; Tanjim Mahmud; Fumito Masui (Mach. Learn. Knowl. Extr., 2026)