unkn meaning in English

未知的未知数
未知数

Data mining , also named as kdd ( knowledge discovery in database ) , is a decision support method in which we can pick up many connotative , unkn - own , potential and useful knowledge or information mode from database or data warehouse . the knowledge that is discovered by means of data minning can reflect a certain facts and guide practice
数据挖掘( datamining ) ,又称知识发现,是利用各种分析工具在存放海量数据的数据库或数据仓库中提取隐含的、先前未知的、潜在有用的知识或信息模式的决策支持方法。通过数据挖掘发现的知识能够反映一定的客观事实,并指导实践。