关键词: 情境感知, 活动理论, 基于活动的情境感知模型, 情境感知购物助手

Abstract: Context awareness is an important part of mobile and ubiquitous computing research field. Most existing studies concentrate on the technical implementation of context awareness system. Due to the lack of understanding on human being’s awareness mechanism in a special context, there is a considerable gap between systems context awareness actions and human expectations to context awareness systems. Activity-based Context-Aware Model（ACAM） is built on the basis of activity theory and human situational awareness theories. ACAM describes human context-aware process enclosed with a specific activity, which can get more accurate understanding on human context awareness mechanism and lead the development of context-aware technology. The case study is conducted under the background of supermarket. The context awareness process of shopping activity and activity-based context awareness shopping assistant verifies the ACAM preliminary.

Key words: context awareness, activity theory, activity-based context awareness model, context awareness shopping assistant