Projecting away the estimated Modern Standard Arabic subspace during fine-tuning improves generation across 25 Arabic dialects by up to +4.9 chrF++, evidence that subspace dominance by a high-resource variety restricts related-variety capacity.
The MADAR A rabic dialect corpus and lexicon
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When Alignment Hurts: Decoupling Representational Spaces in Multilingual Models
Projecting away the estimated Modern Standard Arabic subspace during fine-tuning improves generation across 25 Arabic dialects by up to +4.9 chrF++, evidence that subspace dominance by a high-resource variety restricts related-variety capacity.