摘要
以时空数据模型和无级比例尺数据库的空间数据库为基础 ,研究了 INTERNET数字港的多维模型 .通过对传统空间数据模型的时间扩展 ,研究包含时间的空间运算定义和各种空间关系 ,采用面向对象的方法和超图模型完成时空数据模型的定义 .利用 Agent智能体的自适应、自主学习等特点 ,来完成无级比例尺的信息综合和空间关系的变换 .
The research of Internet based Digital Harbor's multi dimension model is based on the research of spatio temporal data structure and spatial database. Through extending the traditional spatial data structure, and researching the spatial operation and spatial relation which include temporal attrib, adopt Object Oriented method and Hyper graph Based Data Structure to define the spatio temporal model. Using the Agent self adaptation and self study's characteristics, to achieve the generalization of infinitely variable map scale information and the change of the spatial relations.
出处
《大连海事大学学报》
CAS
CSCD
北大核心
2001年第1期102-105,共4页
Journal of Dalian Maritime University
关键词
数字港
多维模型
无级比例尺
超图
AGENT
数字地球
digital harbor
multi dimensional model
infinitely variable map scale
hyper graph based data sturcture
agent
