期刊
ELECTRONICS
卷 11, 期 21, 页码 -出版社
MDPI
DOI: 10.3390/electronics11213509
关键词
fuzzy entropy; fuzzy partition; fuzzy reliability; GIS; thematic map
This study proposes a fuzzy-based thematic classification method that allows for the management of classification uncertainty and evaluation of the resulting thematic map's reliability. By using a fuzzy entropy measure to evaluate the fuzziness of fuzzy sets, an optimal fuzzy partition is found. The reliability of the final thematic map is assessed based on the fuzziness of the fuzzy sets.
Thematic maps of spatial data are constructed by using standard thematic classification methods that do not allow management of the uncertainty of classification and, consequently, evaluation of the reliability of the resulting thematic map. We propose a novel fuzzy-based thematic classification method applied to construct thematic maps in Geographical Information Systems. An initial fuzzy partition of the domain of the features of the spatial dataset is constructed using triangular fuzzy numbers; our method finds an optimal fuzzy partition evaluating the fuzziness of the fuzzy sets by using a fuzzy entropy measure. An assessment of the reliability of the final thematic map is performed according to the fuzziness of the fuzzy sets. We implement our method on a GIS framework, testing it on various vector and image spatial datasets. The results of these tests confirm that our thematic classification method provide thematic maps with a higher reliability with respect to that obtained through fuzzy partitions constructed by expert users.
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