This paper discuss the main technology of automatic extraction of index word and retrieval model.
本文论述了索引词的自动提取和检索模型所使用的主要技术进行了论述。
Against this shortcoming, the most effective technology for information analysis is full-text index.
针对这一缺点，最有效的信息分析技术为全文索引技术。
Traditional technology of index can not be used efficiently in spatial index.
传统的索引技术不能有效地索引空间数据。
It is always the key technology of spatial DBMS to find a efficient index structure.
找到一个高效的索引结构一直是空间数据库研究的重点。
It is always the key technology of spatial DBMS to find a efficient index structure.
找到一个高效的索引结构一直是空间数据库研究的重点。
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