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《Science of Surveying and Mapping》 2011-03
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DLG quality evaluation based on trapeziform comment cloud and virtual cloud theory

ZHAO Quan-hua①,SONG Wei-dong①,SUN Guo-hua②(①Department of Surveying Engineering,Liaoning Technical University,Liaoning Fuxin 123000,China;②Branches of Industry Furnace of China 22Mcc Group Corporation Ltd,Hebei Tangshan 064000,China)  
Quality evaluation of spatial data quality is a problem due to the coexistence of illegibility and randomicity,and traditional evaluation method can not deal with the problem.In the paper,The evaluation method based on Trapeziform Comment Cloud and Dummy Cloud was provided for the DLG evaluation in order to resolve the problem.The test of DLG quality evaluation comparison was done between the studied methods and the traditional weighted average method and fuzzy comprehensive evaluation method.The test result proved that the evaluation result by the method based on Trapeziform Comment Cloud and Dummy Cloud was more intuitionistic,reliable and sensitive.
【Fund】: 辽宁省教育厅基金资助(2009A335)
【CateGory Index】: P208
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