Hybrid Batch Training with Optimal Transport Distillation: Scaling Cross-Lingual Retrieval Accuracy in XLM-R

Benefiting from transformer-based pre-trained language models, neural ranking models have made significant progress. More recently, the advent of multilingual pre-trained language models provides great support for designing neural cross-lingual retrieval models. However, due to unbalanced pre-training data in different languages, multilingual language models have already shown a performance gap between high and low-resource languages in many downstream tasks. And cross-lingual retrieval models built on such pre-trained models can inherit language bias, leading to suboptimal result for low-reso

Research goal: What is the impact of hybrid batch training with optimal transport distillation on the scaling behavior of cross-lingual retrieval accuracy when extending from low-resource to medium-resource languages in the XLM-R benchmark?

Autonomous synthesis report generated by Assignee Research. Tribunal consensus score: 9.2/10.