Cross-Lingual Generalization to Low-Resource and Structurally Divergent Languages

Characterize the cross-lingual phonological transfer behavior of Phrase-Localized Language-Contrastive Guidance within deeply low-resource or structurally divergent language families.

Background

The evaluation corpus contains 1,200 utterances and covers five languages and twelve directional tasks, but it does not provide exhaustive typological or linguistic coverage. The authors therefore leave unresolved whether the phonological transfer behavior observed for Phrase-Localized Language-Contrastive Guidance extends to deeply low-resource languages or to language families with substantial structural divergence from those evaluated.

References

Furthermore, while this benchmark covers major high-resource language pairs, its typological and linguistic coverage is not exhaustive; consequently, the cross-lingual phonological transfer behavior of LCG within deeply low-resource or structurally divergent language families remains an open question.

— Phrase-Localized Language-Contrastive Guidance: Training-Free Localized Accent Control for Code-Switching Text-to-Speech  (2609.01016 - Lee et al., 1 Sep 2026) in Section “Limitations,” first paragraph