摘要：The paper presents the method of composition of task-dialog model used in the design process of user interface. The task-dialog model is based on the process model and composed in the space of processes. The space of processes specifies the knowledge of problem area and is described by hierarchical, non-hierarchical, and process time constructs. This formal structure and the rules of usage define composition process of task-dialog model and ensure fast and smooth user interface development.
