Towards a General Field model and its order in GIS

被引：51

作者：

Liu, Y. ^{[1
,1
]}

Goodchild, M. F. ^{[2
]}

Guo, Q. ^{[3
]}

Tian, Y. ^{[1
]}

Wu, L. ^{[1
,2
]}

机构：

[1] Univ Calif Santa Barbara, Natl Ctr Geog Informat & Anal, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA

[3] Univ Calif Merced, Sch Engn, Merced, CA 95344 USA

来源：

INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SCIENCE | 2008年 / 22卷 / 06期

关键词：

general field model; order of general field; order-increasing operation; non-order-increasing operation; geographic information system;

D O I：

10.1080/13658810701587727

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Geospatial data modelling is dominated by the distinction between continuous-field and discrete-object conceptualizations. However, the boundary between them is not always clear, and the field view is more fundamental in some respects than the object view. By viewing a set of objects as an object field and unifying it with conventional field models, a new concept, the General Field (G-Field) model, is proposed. In this paper, the properties of G-Field models, including domain, range, and categorization, are discussed. As a summary, a descriptive framework for G-Field models is proposed. Then, some common geospatial operations in geographic information systems are reconsidered from the G-Field perspective. The geospatial operations are classified into order-increasing operations and non-order-increasing operations, depending on changes induced in the G-Field's order. Generally, the order can be viewed as an indicator of the level of information extraction of geospatial data. It is thus possible to integrate the concept of order with a geo-workflow management system to support geographic semantics.

引用

页码：623 / 643

页数：21