GUIDE: Resolving Domain Bias in GUI Agents through Real-Time Web Video Retrieval and Plug-and-Play Annotation

Large vision-language models have endowed GUI agents with strong general capabilities for interface understanding and interaction. However, due to insufficient exposure to domain-specific software operation data during training, these agents exhibit significant domain bias— they lack familiarity with the specific operation workflows (planning) and UI element layouts (grounding) of particular applications, limiting their real-world task performance. In this paper, we present GUIDE (GUI Unbiasing via Instructional-Video Driven Expertise), a trainingfree, plug-and-play framework that resolves GUI agent domain bias by autonomously acquiring domain-specific expertise from web tutorial videos through a retrieval-augmented automated annotation pipeline. Guide introduces two key innovations. First, a subtitle-driven Video-RAG pipeline unlocks video semantics through subtitle analysis, performing progressive three-stage retrieval—domain classification, topic extraction, and relevance matching—to identify task-relevant tutorial videos. Second, a fully automated VLM pairwise video annotation pipeline feeds consecutive keyframes enhanced with UI element detection into VLMs, inferring the required planning and grounding knowledge that are injected into the agent’s corresponding modules to address both manifestations of domain bias. Extensive experiments on OSWorld demonstrate Guide’s generality as a plug-and-play component for both multi-agent systems and single-model agents. It yields +4.47–+7.48 percentage-point improvements and reduces execution steps—without modifying any model parameters or architecture—validating Guide as an architecture-agnostic enhancement to bridge GUI agent domain bias. Code, dataset, and additional results are available on our project page: https://sharryXR. github.io/GUIDE/.