Transportation Data Exchange And Quality Audit Based On Resource Catalog

With the development of global digitalization and the proposal and vigorous promotion of digital China and digital transportation,the digital economy has become an important part of my country’s economy.Data exchange is an important way to increase the value of data.Existing data exchange methods have problems such as large manual dependence and inconsistent data quality audit basis.Combining the construction requirements of the resource catalog proposed by the national e-government,this paper researches and designs a transportation data exchange and quality audit method based on the resource catalog.The main work of this paper is as follows:Firstly,according to the characteristics of resource catalog and the development of exchange technology,a data exchange framework under the control of catalog is proposed.A configuration method of exchange tasks based on resource catalog is designed,and a timing execution method is designed for data exchange tasks configured in units of information resources,as well as a judging method and error handling strategy for tasks not triggered on time.Aiming at the requirement that catalogs often need to be modified,an adaptive matching method for exchange fields is proposed.This method combines the principles of the edit distance similarity algorithm and the longest common subsequence algorithm,and at the same time adds the influence of the common prefix on the similarity between strings to achieve Automatic matching.It has been verified by experiments that the matching accuracy of the improved algorithm is better than that of the traditional algorithm.Secondly,the method of data quality auditing based on the resource catalog is studied,and six quality auditing dimensions of completeness,normativeness,accuracy,consistency,online rate and timeliness are proposed in combination with relevant national standards,and each dimension is analyzed in turn.Researched subdivided audit rules and detection methods with reference to the resource catalog,and established a data quality assessment quintuple model,based on the audit results of each quality dimension,audited the comprehensive quality of exchanged data,and generated corresponding Data quality audit report.Finally,a transportation data exchange platform based on the resource catalog is designed and implemented,the overall hierarchical structure of the system is introduced in detail,the design of core modules such as data exchange and quality audit and the realization of specific functions are described,and the functions of the core modules are explained.Tests are carried out to verify the feasibility and effectiveness of the data exchange method and quality audit method proposed in this paper.