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Evil persona vectors show asymmetric cross-lingual transfer in LLMs

Researchers have investigated the transferability of "evil persona vectors" across different languages in large language models (LLMs). Their study, which involved English, Spanish, Swahili, and Telugu, found that these vectors, used to control model behavior and understand vulnerabilities, are directionally asymmetric. Vectors extracted from high-resource languages like English and Spanish were effective in steering behavior in low-resource languages, while vectors from low-resource languages were less reliable and transferable. This suggests a shared cross-lingual "evil direction" exists, which can be leveraged from high-resource languages to influence behavior in low-resource ones without extensive per-language data. AI

IMPACT Suggests that controlling harmful behavior in LLMs across languages may be achievable by leveraging high-resource language data.

RANK_REASON Research paper published on arXiv detailing findings about LLM behavior. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.AI →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Evil persona vectors show asymmetric cross-lingual transfer in LLMs

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Research paper published on arXiv detailing findings about LLM behavior. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. arXiv cs.AI TIER_1 English(EN) · Juann Kim, Minku Kang ·

    Cross-Lingual Transfer of Evil Vectors Is Directionally Asymmetric

    arXiv:2610.17880v1 Announce Type: cross Abstract: Persona vectors are linear directions in the residual-stream activations of LLMs that encode behavioral traits and enable fine-grained control over model behavior. Among them, the evil persona vector is particularly relevant to un…