A Context-Aware Software Adaptation Framework

对在运行时动态调整其行为以响应变化的软件系统的需求不断增加。来自两个社区的研究人员对这些系统进行了研究，他们有两个不同的侧重点：自适应和语境感知。一方面，上下文感知的研究更多地关注如何对上下文信息进行建模、处理和管理，但仅限于系统如何适应上下文信息中的意外变化。另一方面，自适应方面的研究更多地是关于如何适应系统的结构和/或行为，以响应需求和/或上下文变化(可能是意想不到的变化)，而较少关注如何对上下文进行建模、处理和管理。在实践中，两者之间的界限相当模糊，设计一个上下文感知自适应系统需要以系统的方式考虑这两个方面。

There is an increasing demand for software systems that dynamically adapt their behavior at runtime in response to changes. Research into these systems has been conducted by researchers from two communities with two different emphases: self-adaptivity and context-awareness. On one hand, research in context-awareness is more concerned with how to model, process, and manage the context information but limited on how a system adapts itself in response to unanticipated changes in the context information. On the other hand, research in self-adaptivity is more about how to adapt the system's structure and/or behavior in response to requirements and/or context changes (possibly unanticipated changes), with less attention to how context is modeled, processed, and managed. In practice, the line between the two is rather blurred, and the engineering of a context-aware adaptive system needs to consider both aspects in a systematic manner.