计算机科学 ›› 2014, Vol. 41 ›› Issue (11): 132-136.doi: 10.11896/j.issn.1002-137X.2014.11.026
谌国风,孔俊俊,郭耀,陈向群
SHEN Guo-feng,KONG Jun-jun,GUO Yao and CHEN Xiang-qun
摘要: 随着信息技术的发展和应用需求的增长,智能手机中嵌入了各种传感器和网络接口,它们是获取上下文信息,进而构建智能型移动应用的关键。尽管在智能手机中获取上下文信息的代价很大,但是这种代价却通常被移动应用开发者所忽视。提出了一个上下文信息获取的代价模型,它能对上下文信息获取的代价进行度量。设计并实现了一个上下文信息获取代价模型的测量工具CRCTest,并对Android智能手机的代价模型进行了测量。基于测量得到的Android平台上下文信息获取的代价模型实现了一个应用实例,通过对比两种位置上下文信息生成方式的代价,说明了基于代价模型优化设计上下文获取的可行性。
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