Customizing Domain Adapters for Domain Generalization

In this paper, we study domain generalization, where the goal is to develop models that can effectively generalize from multiple source domains to unseen target domains. Different from traditional approaches that aim to create a single, style-invariant model, we propose a new "Customized Domain Adapters" method, named CDA. This method leverages parameter-efficient adapters to construct a model with domain-specific components, each component focusing on learning from its respective domain. We focus on integrating the unique strengths of different adapter architectures, such as ViT and CNN, to create a model adept at handling the distinct statistical properties of each domain. Our experimental results on standard domain generalization datasets demonstrate the superiority of our method over traditional approaches, showcasing its enhanced adaptability and robustness in domain generalization tasks. Code is released at https://github.com/code456-star/CDA.