Papers › BAD-X: Bilingual Adapters Improve Zero-Shot Cross-Lingual Transfer

BAD-X: Bilingual Adapters Improve Zero-Shot Cross-Lingual Transfer

1 Jul 2022NAACL 2022 7archive 2025-07-28

Marinela Parović, Goran Glavaš, Ivan Vulić, Anna Korhonen

Adapter modules enable modular and efficient zero-shot cross-lingual transfer, where current state-of-the-art adapter-based approaches learn specialized language adapters (LAs) for individual languages. In this work, we show that it is more effective to learn bilingual language pair adapters (BAs) when the goal is to optimize performance for a particular source-target transfer direction. Our novel BAD-X adapter framework trades off some modularity of dedicated LAs for improved transfer performance: we demonstrate consistent gains in three standard downstream tasks, and for the majority of evaluated low-resource languages.

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Cross-Lingual TransferZero-Shot Cross-Lingual Transfer

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