%0 Journal Article
%T QoS management for real-time and mobile database systems based on imprecise computation<br>基于不精确计算移动实时数据库服务质量管理
%A XIANG Jun
%A LI Guo-hui
%A YANG Bing
%A <br>向军
%A 李国徽
%A 杨兵
%J 计算机应用
%D 2008
%I 
%X The demand on mobile and real-time database application and service becomes increasingly extensive, so that competing for the limited resources and predicting workload imprecisely lead to abortion or restart for system even catastrophe. Because a real-time process scheduler using worst-case execution time is inefficient for optimizing performance, a scheduling algorithm for update transactions based on imprecise computation and feedback control loop was presented in this paper. A performance metrics based on validity in time domain and value domain was proposed to ensure the quality of service in mobile and real-time database systems. The algorithms and feedback control architecture can guarantee the transient and steady performance of Quality of Service (QoS), which is verified by simulation experiments.
%K quality of service
%K derived data
%K real-time and mobile database
%K imprecise computation<br>服务质量
%K 导出数据
%K 移动实时数据库
%K 不精确计算
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=649F7E628AB490B821395639EBDC4CF9&yid=67289AFF6305E306&vid=D3E34374A0D77D7F&iid=DF92D298D3FF1E6E&sid=E8941A3800A46ABD&eid=457F754A679A9D25&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=11