基于模糊综合评价的接边质量评价
2016-11-01介丹胡强强徐成武高保禄李海芳
介丹 胡强强 徐成武 高保禄 李海芳
摘要:
针对传统的接边质量评价方法主要依赖专家人工评定所造成的效率低、容易受主观因素影响且评价结果易出现偏差的问题,提出了一种新的地图映射评价算子(GMO)。该算子将模糊综合评价应用到接边质量评价中,并根据国家标准确定了评价指标和评语等级,通过熵权法确定了评价因素的模糊权向量。另外,对新算子进行了理论证明。在实际数据中使用GMO时,接边前地球数据质量评价结果中65%为不合格,而接边后评价结果中55%是优秀的,验证了GMO的有效性。
关键词:
模糊综合评价;接边质量评价;算子;熵权法
中图分类号:
TP391.41
文献标志码:A
Abstract:
Focusing on the issues caused during traditional edge quality evaluation which is completed by experts. Efficiency and the fact that it is easy to be influenced by subjective factors are included in these issues. Both them will result in the evaluation results on deviation.
Focusing on the issues of low efficiency, being easy to be influenced by subjective factors and deviation of the evaluation results caused by the traditional edge quality evaluation which relies on experts, a new mapping evaluation operator called Geographical Mapping Operator (GMO) was proposed. Fuzzy comprehensive evaluation was applied to the edge quality evaluation, and the comment rate and evaluation index were determined according to the national standard, as well as the fuzzy weight vectors of evaluation factors were determined through the entropy weight method. Besides, the new operator was proved by theory. When applying the GMO to the actual data, the unqualified quality of earth data accounts for 65% before edging, but the perfect quality of earth data accounts for 55% after edging, which indicates the effectiveness of GMO.
英文關键词Key words:
fuzzy comprehensive evaluation; evaluation of edge quality; operator; entropy weight method
0引言
地图数字化过程中,由于绘图误差、数字化误差、属性输入错误等因素,相邻图幅边界间要素的几何位置和属性信息可能会出现不一致。在地形图生产过程中,相邻图幅间图形的几何和属性接边处理是一项必不可少的工作。接边处理方法有多种,如:人工接边、软件辅助接边、软件自动化接边等。但是,接边质量评价一直以来没有一个统一的标准。和接边质量评价相关的研究有:2000年华慧等提出将接边图面精度指标作为衡量地图数字化质量的一个量化指标;2013年史克农等尝试以及通过软件自动化检查接边过程中存在的问题,来提高接边工作效率等;2014年蒋勇等[1]提出了基于ArcGIS Engine的IPointCollection接边检查法,通过ArcGIS Engine提供的IPointCollection设计接边检查软件。
现有的接边质量评价研究……
