地学G4I系统集成数据质量评价关键技术研究

为提高层次分析法(AHP: Analytic Hierarchy Process)在数据质量评价中的客观性\, 准确性, 对层次分析法各层次指标赋值方法进行改进, 用加权求积替代下级指标与上级指标之间的加权求和关系； 在4G地学空间集成数据质量评价中, 引入专家打分的客观赋值方法, 对指标矩阵进行权重赋值, 并将所得综合权重计算结果和综合评价结果与典型层次分析法进行比较。结果表明, 采用改进的层次分析法可有效降低主观因素的影响, 分析误差降低约59%, 能更加客观地反映数据质量情况, 为G⁴I系统中数据质量控制提供了基本依据和定量参考。

Research on Key Technology of Integrated Data Quality Evaluation of G4I System

Focusing on improving the objectivity and accuracy of AHP（Analytic Hierarchy Process） in the data quality evaluation, improving to each level indexes assignment method of AHP, we use weighted quadrature relationship instead of weighted sum relationship between the higher index and the lower index, introduce an objective assignment method of expert scoring, assign the weights on the indexes matrix in the quality evaluation of 4G geological spatial integrated data. The comprehensive weights results of indexes matrix and the evaluation results are more objective reflect the quality of the integrated data compared to the results by typical AHP, and can provide the basis and quantitative reference for data quality control of G4I system.