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    • 6. 发明授权
    • System and method for improving the ranking of information retrieval
results for short queries
    • 用于提高短查询信息检索结果排名的系统和方法
    • US5870740A
    • 1999-02-09
    • US719816
    • 1996-09-30
    • Daniel E. RoseDouglass R. Cutting
    • Daniel E. RoseDouglass R. Cutting
    • G06F17/30
    • G06F17/30675Y10S707/99933Y10S707/99934Y10S707/99935Y10S707/99937
    • A method and system for retrieving information in response to a query by a user. The method includes the steps of receiving a signal s having a value corresponding to a relevance-ranking algorithm score of a retrieved document, receiving a signal q having a value corresponding to the number of words in the query and a signal v having a value corresponding to the coordination level of the retrieved document and query (i.e., the degree of overlap between the document terms and the query terms), and generating an adjusted score s1 dependent on the signal s, the signal q and the signal v. The adjusted score s1 takes the coordination level into account for small values of q and gradually decreases the importance of the coordination level as q increases. The system of this invention includes a computer-based system for carrying out the method of this invention.
    • 用于响应于用户的查询来检索信息的方法和系统。 该方法包括以下步骤:接收具有对应于检索到的文档的相关性排序算法得分的值的信号s,接收具有与查询中的字数相对应的值的信号q和具有对应值的信号v 到所检索的文档和查询的协调级别(即,文档项与查询项之间的重叠程度),并根据信号s,信号q和信号v产生调整得分s1。调整得分 s1考虑到q的小值的协调水平,并随着q的增加逐渐降低协调水平的重要性。 本发明的系统包括用于实施本发明的方法的基于计算机的系统。