摘要： 如何提高查询效率，是每个搜索引擎都关心的问题。在数字图书馆项目中，通过一种充分利用用户先前查询结果的方法提高了查询效率。该方法利用带有不完整信息的XML树记录用户先前的查询结果，在用户下次提出查询请求的时候，利用这个结果来直接得到要查询的结果，并且每次查询后，根据新的查询结果修改XML树。
关键词:
不完整信息,
XML,
数字图书馆,
查询效率
Abstract: A lot of research has been done to improve the query efficiency of research engines. In the digital library project, people uses a method of taking full use of the previous results of users to improve the query efficiency. It uses the XML tree with incomplete information to record the results of the previous queries and uses the results to answer the following queries. The XML tree with incomplete information will be modified after each query.
中图分类号:
肖金升,宋军,施伯乐. 带有不完整信息的XML树在提高查询效率中的应用[J]. , 2003, 29(20): 40-.
XIAO Jinsheng, SONG Jun, SHI Baile. Application of XML Tree with Incomplete Information in Query Efficiency Improvement[J]. , 2003, 29(20): 40-.