空间数据产品质量语言评价研究

Research on Spatial Data Product Quality Linguistic Evaluation

为提高空间数据产品质量评价的科学性和减弱由评价者和空间数据引起的不确定性,解决不同粒度语言的集成,引入梯形模糊数,对空间数据产品质量进行语言评价。本方法把语言评价转化为梯形模糊数,然后按模糊理论进行空间数据产品质量评价。实例评价结果表明,采用本方法能使语言评价定量化。本方法不仅考虑了空间数据产品质量的不确定性,而且还考虑了空间数据产品质量属性的重要性,因此,评价结果更加科学。本研究成果能为空间数据产品质量评价提供参考。

In order to improve science of spatial data product quality evaluation and reduce uncertainty caused by evaluator and spatial data product,and to solve integration of different granularity languages,trapezoidal fuzzy number of fuzzy theory is adopted to evaluate spatial data product quality.The linguistic evaluation is transformed into trapezoidal fuzzy number.The results shown that it could change qualitative evaluation into quantitative evaluation,which not only considers the uncertainty of spatial data product quality,but also takes into account the importance of spatial data product quality attributes.Therefore,the evaluation results are more persuasiveness and science using this method.The results of this study can provide a reference method to spatial data product quality evaluation.