Users of the search engine go through in the concept lattice whose first conceptnode is built by initial query and extend or refine the query through interactive mode.
利用概念格的概念检索和可视化格结构，使搜索引擎查询扩展方法具备了概念化和智能化的特点。
2
Single group concept - a group is a node in the hierarchy whose only purpose is to create a structure that categorizes or encapsulates information.
单组概念—一个组是层次结构中的一个节点，惟一目的是创建一个对信息分类或封装信息的结构。
3
The key concept here is that the configuration and maintenance of each node should be either identical or very minimally different.