一种基于多时间粒度的实时客流查询优化算法  

An Optimization Algorithm of Real-time Customer-counting Query Based on Multiple Time Granularities

作　　者：苏礼楷[1] 

机构地区：[1]广东商学院教育技术中心,广东广州510320

出　　处：《计算机与现代化》2011年第8期149-152,共4页Computer and Modernization

摘　　要：随时间实时变化的客流数据属于时间序列数据,本文根据客流数据的接收频率,应用关系模型实现客流数据的存储建模;为了减弱数据采集频率对实时客流查询效率的影响,建立多时间粒度的客流视图,可提高实时客流查询的计算效率。The real-time flow of customer data changed with time is classified as the time series.According to the receiving frequency,the relational model is applied for the storage of the customer data.In order to weaken the influence of the query efficiency of the real-time customer-counting by the receiving frequency,the views of the customer data with multiple time granularities are established and the query efficiency is improved.

关 键 词：多时间粒度 时间序列 查询优化 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]