中文摘要：

环境信息呈现多样性、动态性、复杂性等特征。将环境信息分为精确／模糊、快变／慢变、时间／空间和历史／期望四个维度。精确／模糊维度采用模糊逻辑理念，快变／慢变运用push／pull机制，并通过时间戳、两级本体模型以及反馈机制结合预测函数来实现时间／空间以及历史／期望维度，克服了环境信息质量模型中参数的不易测量性。结合实例，对精确／模糊维度的处理进行了仿真分析，表明了方案的可行性和有效性。

英文摘要：

Context information presents a series of characteristics, such as diversity, dynamics, and complexity, the multi-di- mensional context-aware model in which context information is divided into accuracy/fuzzy, fast/slow, time/spatial and history/ future four dimensions is proposed. And accuracy/fuzzy and fast/slow dimensions are solved respectively by leveraging on fuzzy logic and push/pull mechanism, in respect of time/spatial and history/future, using time stamp, two-hierarchy ontology method and feedback along with predict function. Simulation analysis demonstrates the feasibility and effectiveness of the project.