{"type": "article", "title": "A Data-Efficient Path to Multilingual LLMs: Language Expansion via Post-training PARAM𝛥 Integration into Upcycled MoE", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/a-data-efficient-path-to-multilingual-llms-language-expansion-via-post-training", "original_source": "https://aclanthology.org/2026.acl-long.1238/", "published": "2026-06-22T00:00:00+00:00", "accessed": "2026-07-11", "id": "a-data-efficient-path-to-multilingual-llms-language-expansion-via-post-training"}