The Research On Data Quality Analysis And Evaluation Of Information System And The Application In Labor Mraket

With fast development of information technology, information system becomes more universal. This is convenient for us. But as the increasing of data in system, problems of data quality become more serious. The information construction in labor market has been involved in the proposal of state electronic government affairs in "Gold Guarantee Project". Some "Dirty Data" will appear in labor market information system after some time. It affects data accuracy and quality of system services.This study is based on the real background and requirement mentioned above. And it is also involved in the research topic of labor market distributed decision support system based on internet which is part of 2007 technological support and guide project in Zhejiang Province.The main contents of this thesis are as follows.1,Give a set of comprehensive and universal evaluation indicator system for the analysis of information system data quality. 2,Design a quantifiable data quality evaluation model base on evaluation indicators. This model assesses data quality from three aspects. They are evaluation perspective, data importance and overall indicator score.3,Give the methodology of data quality analysis and the concept of analytical data cleansing base on indicator system. Then design an analysis system, the architecture of which includes five layers. They are database layer, data view layer, control layer, data analysis layer and alternation layer. Then explains how the system analysis data quality from seven indicators, they are correctness, integrity, exclusivity, coherence, accuracy, validity, efficiency.4,Analysis the data quality of Hangzhou labor market information system using the analysis system. Then summarizes the main causes of data quality problems and also give some approving suggestions.