With the explosive growth of biological data,there is an increasing number of biological databases that contain a hu......

在泛化和聚集语义关系基础上生成大量的子查询语句 ,同时按照与原始语句的语义距离将权值传递给子查询语句 该方法能够由关键字匹......

The authors discuss the concept of meta-information which is the desription of information system or its subsystems,and ......