TGPENS系统运用基于知识的数据库方法，从操船专家的角度给出导航信息。
A navigation expert system TGPENS is introduced, which can give navigation information from the Angle of veteran captains with a method of knowledge - based databases.
而且CM IS知识库的实现也并非都基于关系数据库(虽然多数是如此)。
Nor is it true that the implementation of a CMIS repository is based on a relational database (though many are).
本文提出了一种基于知识的遥感图像模糊分类算法，在传统的模糊分类方法中加入了从GIS数据库中发现的知识，用它来辅助进行遥感图像分类。
In this paper, a knowledge-based fuzzy image classification method is proposed. In the method, knowledge discovery from GIS is introduced in to assist fuzzy image classification.
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