In this paper, a new query method which is based on generalization hierarchy in Object Oriented Database (OODB) is proposed.

针对面向对象的数据库(OODB)的概括继承结构提出一种新的查询途径，它建立在一种对象表示的基础上。

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In data mining with Attribute-Oriented generalization (AOG), attribute reduction and concept generalization can not part from concept hierarchy.

在面向属性归纳(AOG)的数据挖掘中，属性归约及概念归纳都离不开概念层次。

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In order to improve IDS's ability of generalization for knowledge of intrusion, a method is put forward that applies fuzzy clustering to obtain hierarchy generation for intrusion feature set.

为了提高入侵检测系统对入侵特征知识的归纳和概括能力，提出了将一种基于模糊等价关系的动态聚类方法应用于对入侵特征集进行层次聚类。

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