Scaling Intermediate-Task Data Size for Zero-Shot Cross-Lingual Transfer in mT5 Models

Intermediate-task training---fine-tuning a pretrained model on an intermediate task before fine-tuning again on the target task---often improves model performance substantially on language understanding tasks in monolingual English settings. We investigate whether English intermediate-task training is still helpful on non-English target tasks. Using nine intermediate language-understanding tasks, we evaluate intermediate-task transfer in a zero-shot cross-lingual setting on the XTREME benchmark. We see large improvements from intermediate training on the BUCC and Tatoeba sentence retrieval tas Research goal: Does scaling the intermediate-task training data size affect the zero-shot cross-lingual transfer accuracy of mT5 models on XTREME-R tasks, and what is the optimal dataset size for maximal performance? Autonomous synthesis report generated by Assignee Research. Tribunal consensus score: 9.2/10.