Steer2Adapt: Dynamically Composing Steering Vectors Elicits Efficient Adaptation of LLMs
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Abstract (arXiv)
Activation steering has emerged as a promising approach for efficiently adapting large language models (LLMs) to downstream behaviors. However, most existing steering methods rely on a single static direction per task or concept, making them inflexible under task variation and inadequate for complex tasks that require multiple coordinated capabilities. To address this limitation, we propose STEER2ADAPT, a lightweight framework that adapts LLMs by composing steering vectors rather than learning new ones from scratch. In many domains (e.g., reasoning or safety), tasks share a small set of underlying concept dimensions. STEER2ADAPT captures these dimensions as a reusable, low-dimensional semantic prior subspace, and adapts to new tasks by dynamically discovering a linear combination of basis vectors from only a handful of examples. Experiments across 9 tasks and 3 models in both reasoning and safety domains demonstrate the effectiveness of STEER2ADAPT, achieving an average improvement of 8.2%. Extensive analyses further show that STEER2ADAPT is a data-efficient, stable, and transparent inference-time adaptation method for LLMs.
Key facts. Cited by 7 papers in the map (data through 7 Oct 2026). Builds on 72 of its 90 references that are in the map. First posted on arXiv 7 Feb 2026.
Builds on
72 of 90 references.
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Citing papers per year: 2026: 7.
7 papers.
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- 2026AI Steerability 360: A Toolkit for Steering Large Language Models8 Mar 2026