DeCoVec: Building Decoding Space based Task Vector for Large Language Models via In-Context Learning

ArXi:2604.11129v1 Announce Type: new Task vectors, representing directions in model or activation spaces that encode task-specific behaviors, have emerged as a promising tool for steering large language models (LLMs). However, existing approaches typically require fine-tuning or invasive manipulation of internal states, limiting their flexibility and scalability. We propose \textsc{DeCoVec} (Decoding Space based Task Vector), a