基于OO的CIMS信息分类编码研究

来源 :南京航空航天大学学报 | 被引量 : 0次 | 上传用户:scz
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通过分析国内外现有各分类编码系统以及 CIMS对信息集成的要求 ,结合面向对象 (Ob-ject- oriented,OO)方法提出了一种面向 CIMS各环节的分类编码结构模型 FCC。该模型由复杂对象 O和施加于 O上的操作 M构成 ,其中 O可描述为一个三元组 ,用于类别标识 ,事物特征描述和图形特征描述。类别标识项是一个可用二元组描述的复杂对象 ;图形特征项是一个四元组 ,描述了图形标识 ,图形符号 ,图形特征数据和图形文件 ;为描述 FCC结构引入了属性域连接和超类/子类连接 ,并将该 OO复杂模型扁平化为一个由类别标识 ,对象注册码和特征描述码组成的关系。采用关系方式实现系统底层为编码系统与其他已有系统兼容提供了可能 ,为 CIMS中信息交换 ,数据共享提供了保证。最后指出该模型具有多级、不确定层次、柔性和面向对象特征的特点 ,能有效地解决 CIMS中的信息分类编码问题 Based on the analysis of existing coding systems at home and abroad, and the requirements of CIMS for information integration, an object-oriented (C-OCD) classification coding structure model FCC for all aspects of CIMS is proposed. The model is composed of a complex object O and an operation M applied to O, where O can be described as a triple for category identification, transaction characterization and graphical characterization. The category identifier item is a complex object that can be described by a tuple. The graphic feature item is a four-tuple that describes the graphic identifier, the graphic symbol, the graphic characteristic data, and the graphic file. The attribute domain connection and the superclass are introduced to describe the FCC structure / Subclass connection and flatten the OO complex model into a relationship consisting of a class identifier, an object registration code, and a feature description code. It is possible to realize the compatibility of the coding system with other existing systems by using the relational method, and guarantee the information exchange and data sharing in CIMS. Finally, it is pointed out that the model has the characteristics of multi-level, indefinite level, flexibility and object-oriented features, which can effectively solve the problem of information classification and coding in CIMS
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