UNLP 2026

Ukrainian document question answering with retrieval and reranking

When Local Wins Fail to Generalize: UNLP 2026 Ukrainian Document QA

UNLP 2026 shared task, 2026

The task asks multiple-choice questions about a collection of Ukrainian documents, and systems have to run offline within a 9-hour compute budget. My pipeline retrieves pages with BGE-M3, reranks them with Qwen3-0.6B, and answers with a quantized MamayLM-Gemma-3-12B.

Results

  • Private leaderboard score of 0.8722, 7th of 15 teams
  • 0.933 top-1 document retrieval on the development set
  • The tweaks that helped most on the development set did not survive the hidden test domains. The plain, conservative retrieval setup generalized better, which is where the title comes from.