With the rapid development of information and technology, metadata for land and resource information has become more and more important. 摘要国土资源信息元数据随着信息技术的飞速发展显得越来越重要。
Multi-demension geographical information classification and codes, five-level geographical information metadata and hypergraph-based spatio-temporal data mining are put forward. 提出了多维地理信息分类和编码方法，五层地理信息元数据内容体系以及超图时空数据挖掘，旨在研究较高层次的网络地理信息组织和提取理论和方法。
logistics information unit怎么读 logistics information unit是什么意思
