Multilingual Model Selection in Zero-Shot Cross-Lingual Retrieval with Hybrid Batch Training

Information retrieval across different languages is an increasingly important challenge in natural language processing. Recent approaches based on multilingual pre-trained language models have achieved remarkable success, yet they often optimize for either monolingual, cross-lingual, or multilingual retrieval performance at the expense of others. This paper proposes a novel hybrid batch training strategy to simultaneously improve zero-shot retrieval performance across monolingual, cross-lingual, and multilingual settings while mitigating language bias. The approach fine-tunes multilingual lang

Research goal: How does the choice of multilingual pre-trained language model (e.g., mBERT vs. XLM-R) affect zero-shot cross-lingual retrieval accuracy under the hybrid batch training strategy compared to SimCSE on XTREME-R?

Autonomous synthesis report generated by Assignee Research. Tribunal consensus score: 8.0/10.