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Remote Sensing Technology and Application  2010, Vol. 25 Issue (3): 438-441    DOI: 10.11873/j.issn.1004-0323.2010.3.438
article     
Rough Measuring for GIS Attribute Data in Different Knowledge Granularities
LIAO Wei-hua,LV Yue-jin
Department of Mathematics and Infomation,Guangxi University,Nanning 530004,China
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Abstract  

Uncertainty of GIS is a study hotspot.The main study is mainly concentrated on traditional methods as probability theory.We use concept of lower approximation and upper approximation,take the attribute data of GIS as attribute sets for information system,then induct attribute data for equivalence class by different attribute assemble,and then use roughness,roughentropy,rough precision to measure the uncertainty of GIS attribute data.Then we find rough precision and roughertropy is descending along with thining in different knowledge granularities for having same attribute.It is corresponding with people's  cognitive habit,and would give a new direction for uncertainty and congnitive study for GIS.

Key words:  Knowledge granularity      Rough set      GIS      Attribute data     
Published:  20 October 2010
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LIAO Wei-hua
LV Yue-Jin

Cite this article: 

LIAO Wei-hua, LV Yue-Jin. Rough Measuring for GIS Attribute Data in Different Knowledge Granularities. Remote Sensing Technology and Application, 2010, 25(3): 438-441.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2010.3.438     OR     http://www.rsta.ac.cn/EN/Y2010/V25/I3/438

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