【Key words】 Geography Information System； Semantic-based Spatial Information Grid； ontology； ontology Alabama； Lightweight Directory Access Protocol； metadata； share； Integration； Interoperability；
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研究了基于本体代数的知识模型集成和基于本体推理、查询的知识模型处理。
The integration of knowledge model is based on ontology algebra and the process of knowledge model is based on ontology inference and query.
为此，文中用面向对象的知识表示方法描述并建立本体，并以此为基础形成领域操作代数系统和智能体服务描述语言。
The paper describes and develops ontology by object-oriented knowledge representation, hence the representation leads to domain algebra system and agent service description language.
分析概念代数与本体表示语言owl之间的对应关系。
The corresponding relations between concept algebra and Ontology Web Language (OWL) are analyzed.
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