交通信息基础数据元层次结构模型及其应用

Hierarchical model of basic data element of transportation information and its application

为了改进现有交通信息基础数据元基于业务领域的分类组织造成的冗余问题,提出并建立了交通信息基础数据元层次结构模型。该层次结构模型将交通信息基础数据元划分为基础数据元、抽象数据元及标准规定数据类型3个层次。对已经颁布的JT/T 697标准进行了层次结构的建立,抽取的73个抽象数据元覆盖了JT/T 697标准中55.35%的交通信息基础数据元。将该结构在交通运输信息数据标准符合性检测中进行了应用。试点工程应用表明:基于层次结构的数据元将标准符合性检测的数据名称的对应率提高了17.38%;在交通信息基础数据元标准的修订中,采纳了该层次结构模型,有效地规范了数据元的编制工作,该模型在数据元标准的建立和应用方面都具有明显的作用。

In order to reduce the redundancy of basic data element of the transportation informa tion which is caused by the classification method in business field, a hierarchical model of the bas ic data element of transportation information was proposed and built. The hierarchical model was divided into three layers, including basic data element layer, abstract data element layer and standard build-in data type layer. About 73 abstract data elements were extracted from the basic data elements of transportation information, which accounted for 55.35% of the total data ele- ments according to JT/T697 standard promulgated. The hierarchical model was applied to the transportation information data standard compliance testing. Application in pilot project shows that the corresponding rate of data item name with data element name has increased by 17.38% for the use of the hierarchical model in standard compliance testing. In the standard revision of the hasie data element of transportation information, the model is adopted and the revision work is standardized effectively. Hierarchical model is significant both in the establishment and applica tion of data element standard. 2 tabs, 3 figs, 6 refs.