Quality Evaluation of Component Data in Urban Grid Management
In view of the quality control characteristics of component data in urban grid management,in this paper,staged sampling method is brought up for sampling single-width component data,at error rate,omission rate,precision error rate as the measuring index of component data quality,and the formula of the defect rate is derived. The arithmetic mean(namely the defect rate of the whole component data) of the defect rate of the multiple component data is taken as the comprehensive evaluation index of the whole component data quality. The relative importance of the top category of component data is taken into account in the staged sampling method,while single-width sampling ensures pertinence and distributing equitability of the sampling data, which conduces to an accurate reflection of both whole and partial component data. The feasibility of the method has been verified in Shanghai s practice.
NETL
NSTL
万方数据
维普
