Hybrid Batch Training and Adversarial Robustness in XLM-R for Zero-Shot Cross-Lingual Retrieval

Abstract

Abstract: 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 Question

How does hybrid batch training affect the adversarial robustness of XLM-R on BEIR zero-shot cross-lingual retrieval tasks compared to standard monolingual fine-tuning?

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