It will take a long time to decide whether a keyword is needed to be optimized. Getting keywords suggestions and allintitle will not be effective, efficient, and economical if done manually for relatively extensive keyword research. ![]() Moreover, search engines are also able to provide keywords suggestion. One of the techniques in doing keyword research is to find out how many articles titles on a website indexed by the Google search engine contain a particular keyword or so-called "allintitle". Keyword research is one of the essential activities in Search Engine Optimization (SEO). Another contribution of the study is the identification of a number of new relevance judgment criteria for Web-based environments. It also helps librarians how to instruct searchers with expanding their queries to retrieve more relevant results. – This research makes a contribution to the need of designers of IR systems regarding the use of add words for query expansion. The content analysis of the participants’ aloud-thinking sessions and the interviews approved such findings. The participants agreed that the suggested keywords by Google improved the retrieval relevance. Also, the “relation between suggested Keywords and the retrieved items” (with the mean rate of 3.62) was considered the second most important criterion in judging the relevance of the retrieved results. – Among other criteria, the “relation between suggested keywords and the information need” (with the mean rate of 3.53 of four) was considered the most important by searchers in selecting suggested keywords for query expansion. ![]() – Through a mixed method approach, quantitative and qualitative data were collected from 60 postgraduate students at Ferdowsi University of Mashhad, Iran, using four different instruments (questionnaire, thinking aloud technique, query logs and interviews). ![]() This paper aims to investigate users’ criteria in relevance judgment regarding Google’s keywords suggest tool and to see how such keywords would lead to more relevant results from the viewpoint of users. Search engines such as Google provide users with keyword suggest tools. – One of the most effective ways information retrieval (IR) systems including Web search engines can improve relevance performance is to provide their users with tools for facilitating query expansion.
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