统计样本请求条件语句谓词表达式的应用研究

STUDY ON APPLICATION OF PREDICATION EXPRESSION FOR STATISTICAL SAMPLE REQUEST CONDITION STATEMENTS

在基于数据集市的统计分析系统中,由于数据源的数据量巨大,要获得有意义的统计结果,必须对源数据的样本集进行条件限定,需要在客户端自动生成限定样本集统计请求的条件语句。基于一种中文语义描述展现的数据集市,研究与实现三层计算架构中客户端填充式条件语句的获取、优化及自动生成可解析执行的谓词表达式的关键技术。

A sample set of the source data should be restricted to obtain significant statistical result due to the fact that the amount ：of source data is huge in the statistical analysis system which is on the basis of data marts, and it is necessary to generate automatically the statistical request condition statements on client which is used to restrict the sample set. The key techniques are studied and realized to obtain and optimize condition statements in filling mode on client in three-tier computing architecture and automatically generate executable predication expression. The definitions of source data of the data mart are displayed in Chinese semantic descriptions.