The Efficacy of Google's suggested keywords and phrases in Query Expansion on postgraduates' View about retrieval relevance

پژوهشنامه کتابداری و اطلاع رسانی

Article 8, Volume 3, Issue 2 - Serial Number 6, March 2013, Pages 133-148   

Document Type: Research Article

DOI: 10.22067/riis.v3i1.10883

Authors

Abdolrasoul khosravi^{* 1}; Rahmatollah Fattahi²; Mehri Parirokh³; Mohammd Hosien Dayyani²

¹Faculty member of Bushehr University of Medical Science, Bushehr Iran

²Professor, Dept. of Library and Information Science, Ferdowsi University of Mashhad, Iran

³Professor, Department of Library and Information Science, Ferdowsi University of Mashhad, Iran

Abstract

Abstract

Purpose: The goal of information systems is to retrieve relevant information fulfilling users’ needs. According to this, search engines have offered a new capability as “suggested keywords”. This is an essential problem that how much these suggested keywords have compatibility with users’ needs. The present research aims to investigate the efficacy of Google's suggested keywords in query expansion and retrieval relevance from users’ view.

Methodology: Through a survey method data were collected from 60 postgraduate students in Humanities/ social sciences and Basic/ Engineering Sciences at Ferdowsi University of Mashhad, Iran. These data were collected by using a researcher-made questionnaire. Non-probability sampling –especially purposive sampling- was used as the sampling method. Also, individual interviews were established with each of the 60 students.

Findings: Findings show that there is a significant difference between the relevance of retrieved results related to primary keyword search and results retrieved through query expansion (suggested keywords). Also there is no significant difference between retrieved results in the two fields of sciences. Finally, the paper suggests some solutions to improve retrieved results related to suggested keywords.

Keywords

Query expansion; Search engines; Google; Suggested keywords; Relevance

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