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Title: 地学粗空间的理论与应用
Other Title: Theory and application of geo-rough space
Authors: Wang, S
Li, D
Shi, W 
Wang, X
Issue Date: 2002
Source: 武汉大学学报. 信息科学版 (Geomatics and information science of Wuhan University), 2002, v. 27, no. 3, p. 274-282
Abstract: 提出了由粗实体、粗关系和粗算子组成的地学粗空间。在分析通过粗集研究地球空间信息学不足的基础上 ,提出了简化的实用粗符号系统 ;定义了地学粗空间的内涵和外延 ,把空间论域全域划分为下近似集、边界集和非集 ,将空间实体以上、下近似集表示为粗实体 ,并用粗度衡量其逼近程度 ;给出了兼顾位置和属性的不确定性的粗关系及其矩阵表示 ;研究了地学粗空间的粗算子 ,重点讨论了粗交集近似通用矩阵、基于影像灰度值的粗隶属函数和冗余属性剔除等粗算子 ;以基于地学粗空间的河流专题遥感影像分类为例 ,检验了地学粗空间的实用性。结果表明 ,地学粗空间可以较大可能地逼近地学实体的真实存在形式 ,决策信息较为丰富、可靠
In this paper,a geo_rough space was proposed as a new approach to handle spatial entities in data analysis.And its basis was rough set.In the geo_rough space,the set of symbols from rough set are simplified and standardized,which includes both rough interpretation and specialized indication.The boundary set was used to take the place of the upper approximation in a practical computation and decision_making.The geo_rough space was characterized by rough entities,rough relationships and rough algorithms in spatial discourse universe,whose element was rough element with a rough degree to measure the roughness.This paper discussed it in Geomatics,paying more attention to the computerized GIS.The result of the case study on thematic image extraction indicated that the geo_rough space was confidential and practical.
Keywords: Geo_rough space
Rough entities
Rough relationships
Rough algorithms
Publisher: 武汉大学期刋社
Journal: 武汉大学学报. 信息科学版 (Geomatics and information science of Wuhan University) 
ISSN: 1000-050X
EISSN: 1671-8860
Rights: © 2002 中国学术期刊电子杂志出版社。本内容的使用仅限于教育、科研之目的。
© 2002 China Academic Journal Electronic Publishing House. It is to be used strictly for educational and research use.
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