“UnifiedQA-V2: Stronger Generalization via Broader Cross-Format Training”, Daniel Khashabi, Yeganeh Kordi, Hannaneh Hajishirzi2022-02-23 (instruct-tuning LLMs, T5 Transformer, AI scaling)⁠:

We present UnifiedQA-v2, a QA model built with the same process as UnifiedQA, except that it uses more supervision—roughly 3× the number of datasets used for UnifiedQA.

This generally leads to better in-domain and cross-domain results.