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Paper Information

lrec2026-main-260

Lightweight Cross-Lingual Federated Prompt Tuning for Low-Resource Languages

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Title

Lightweight Cross-Lingual Federated Prompt Tuning for Low-Resource Languages

Abstract

Multilingual NLP faces challenges of data heterogeneity, privacy, and limited computational resources, especially for low-resource languages. Centralised methods risk privacy breaches, while federated learning struggles with communication overhead and poor cross-lingual generalisation. We propose FLiP (Federated Lightweight Prompt-tuning), a privacy-preserving, resource-efficient, generalizable framework integrating prompt-based learning with federated optimisation. FLiP eliminates communication overhead, reduces trainable parameters to 16%, and cuts GPU memory use by 90%. Experiments show superior generalisation and efficiency under both IID and Non-IID settings, establishing FLiP as a scalable, privacy-aware solution for multilingual NLP, particularly in low-resource and indigenous language contexts.


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