| General Entropy Model of Line Segments Uncerta,nty in GIS |
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| 作者姓名： | SHI Yufeng SHI Wenzhong |
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| 作者单位： | [1]School of Architecture Engineering, Shandong University of Technology, 12 Zhangzhou Road, Zibo 255049, China; [2]Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, 129 Luoyu Road, Wuhan 430079, China. |
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| 基金项目： | Supported by the 0pen Research Fund Program of Geomatics and Application Laboratory, Liaoning Technical University （No.2005004）. |
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| 摘 要： |
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| 关 键 词： | GIS 线段 不确定度 通用熵模型 |
| 文章编号： | 1009-5020（2007）01-061-06 |
| 收稿时间： | 2006-12-11 |
General Entropy Model of Line Segments Uncerta,nty in GIS |
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| SHI Yufeng SHI Wenzhong.General Entropy Model of Line Segments Uncerta,nty in GIS[J].Geo-Spatial Information Science,2007,10(1):61-66. |
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| Abstract: | Spatial data uncertainty can directly affect the quality of digital products and GIS-based decision making. On the basis of the characteristics of randomicity of positional data and fuzziness of attribute data, taking entropy as a measure, the stochastic entropy model of positional data uncertainty and fuzzy entropy model of attribute data uncertainty are proposed. As both randomicity and fuzziness usually simultaneously exist in linear segments, their omnibus effects are also investigated and quantified. A novel uncertainty measure, general entropy, is presented. The general entropy can be used as a uniform measure to quantify the total uncertainty caused by stochastic uncertainty and fuzzy uncertainty in GIS. |
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| Keywords: | uncertainty line segment general entropy stochastic entropy fuzzy entropy uniform measure |
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