加权检索与逻辑检索的比较及实现途径  

COMPARISON BETWEEN THE WEIGHTED SEARCH WITH LOGICAL SEARCH AND IT'S REALIZATION

作　　者：马向东[1] 张丽杰[1] 

机构地区：[1]哈尔滨市图书馆,150080

出　　处：《现代图书情报技术》1995年第6期13-19,共7页New Technology of Library and Information Service

摘　　要：本文通过加权检索与逻辑检索的比较分析和引入负值权数的概念 ,论述了在计算机情报检索中加权法提问式与提问逻辑式在表达意义上的可等价性 ,并提出了合理确定权数的一种简便方法。In this artical,there is a description that equivalency exists between the indi cated content of weighted query expression and that of logical query expression in computer information retrieval,which is or the basis of compairing ,weighted search with logical search and constructing concept of minus weighted valve. An d a simple approch to the valid determination of weighted valve is pointed out. Besides,there embarks upon available methods based on sequeutial or reversed in dex document query.

关 键 词：情报检索 加权检索 逻辑检索 计算机应用 

分 类 号：G354.4[文化科学—情报学]