Robustness of Zero-Shot Cross-Lingual Transfer in XTREME-R via Intermediate-Task Training

Pre-trained multilingual language encoders, such as multilingual BERT and XLM-R, show great potential for zero-shot cross-lingual transfer. However, these multilingual encoders do not precisely align words and phrases across languages. Especially, learning alignments in the multilingual embedding space usually requires sentence-level or word-level parallel corpora, which are expensive to be obtained for low-resource languages. An alternative is to make the multilingual encoders more robust; when fine-tuning the encoder using downstream task, we train the encoder to tolerate noise in the contex

Research goal: How does intermediate-task training affect the robustness of zero-shot cross-lingual transfer in XTREME-R when applied to adversarial or noisy input data, as measured by F1 score stability across different perturbation levels?

Autonomous synthesis report generated by Assignee Research. Tribunal consensus score: 8.3/10.