ON TERM SELECTION FOR QUERY EXPANSION

被引：138

作者：

ROBERTSON, SE

机构：

[1] Centre for Interactive Systems, Research Department of Information Science, City University

来源：

JOURNAL OF DOCUMENTATION | 1990年 / 46卷 / 04期

关键词：

D O I：

10.1108/eb026866

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In the framework of a relevance feedback system, term values or term weights may be used to (a) select new terms for inclusion in a query, and/or (b) weight the terms for retrieval purposes once selected. It has sometimes been assumed that the same weighting formula should be used for both purposes. This paper sketches a quantitative argument which suggests that the two purposes require different weighting formulae.

引用

页码：359 / 364

页数：6

共 5 条

[1] MEASURES OF INFORMATION RETRIEVAL EFFECTIVENESS PROPOSED BY SWETS [J].