Multilinguality Does not Make Sense: Investigating Factors Behind Zero-Shot Transfer in Sense-Aware Tasks

• URL: http://arxiv.org/abs/2505.24834v1
• Date: Fri, 30 May 2025 17:36:20 GMT
• Title: Multilinguality Does not Make Sense: Investigating Factors Behind Zero-Shot Transfer in Sense-Aware Tasks
• Authors: Roksana Goworek, Haim Dubossarsky,
• Abstract summary: Cross-lingual transfer allows models to perform tasks in languages unseen during training.<n>We show that multilingual training is neither necessary nor inherently beneficial for effective transfer.
• Score: 1.571499916304475
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Cross-lingual transfer allows models to perform tasks in languages unseen during training and is often assumed to benefit from increased multilinguality. In this work, we challenge this assumption in the context of two underexplored, sense-aware tasks: polysemy disambiguation and lexical semantic change. Through a large-scale analysis across 28 languages, we show that multilingual training is neither necessary nor inherently beneficial for effective transfer. Instead, we find that confounding factors - such as fine-tuning data composition and evaluation artifacts - better account for the perceived advantages of multilinguality. Our findings call for more rigorous evaluations in multilingual NLP. We release fine-tuned models and benchmarks to support further research, with implications extending to low-resource and typologically diverse languages.

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