Discourse analysis is one of the basic subjects in pragmatic study, and the study into conversational implicature has become prevailing these days. 摘要话语分析是语用学研究的一个重点，对话语的隐含含义的研究也在不断深入。
Data mining is the discovery of relationships and characteristics that may exist implicitly in databases.Cluster analysis is a task of data mining. 摘要数据挖掘是用来发现数据库中隐含的各个数据之间的关系和特性，聚类分析是数据挖掘所要完成的工作之一。
