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。
Single group concept - a group is a node in the hierarchy whose only purpose is to create a structure that categorizes or encapsulates information.
与抽象相关，校平的概念是将信息项放在层次结构中正确级别的对等分类中。
Related to abstraction, the idea of leveling is to place information items into peer categories at the correct level in the hierarchy.
该模型在概念的层次上刻画学科领域的知识结构及知识之间的关系，解决了知识动态分类的问题。
This model depicts the knowledge structure and the relationship between knowledge in the conceptual level. It solves the problem of dynamic categorization of knowledge.
其中概念层次树作为一种统计类的数据分类方法在面向属性的归纳分类方法中起着重要作用。
Conception Hierarchy Tree classifiers which is a statistical approach have played an important role in Attribute-Oriented Induction.
其次，采用机器学习技术，包括文本分类、聚类，文本概念抽取，从概念层次理解文本信息；
Secondly, the system can distinguish the domain of the web page and understand the document at the concept level by text classification, clustering and concept extraction based machine learning.
该文在对传统的多维数据模型进行综合分析的基础之上，利用了包括空间概念的层次分类结构、空间多维向量等工具来表示模型。
This paper based the analysis of the traditional multi-dimensional data model, used the tools include arrangement structure in space, multi-dimensional in space to express the model.
本体就是对概念和关系的描述，基于本体的文本分类就是基于知识层面和语义层次上的分类。
Ontology is a description between the conception and the relation. The document categorization based on ontology is based upon the level of knowledge and semantic relations categorization indeed.
为了适应本体数据源大量的分类数据，提出了一种新的聚类算法sct，实现数据库元组的自动聚类以及概念层次结构的生成。
A new clustering algorithm named SCT is raised, which makes system be more suitable to the category data in data source of ontology.
为了适应本体数据源大量的分类数据，提出了一种新的聚类算法sct，实现数据库元组的自动聚类以及概念层次结构的生成。
A new clustering algorithm named SCT is raised, which makes system be more suitable to the category data in data source of ontology.
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