Search (3 results, page 1 of 1)

  • × author_ss:"Topi, H."
  • × theme_ss:"Benutzerstudien"
  1. Topi, H.; Lucas, W.: Mix and match : combining terms and operators for successful Web searches (2005) 0.00 
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    Abstract
    This paper presents a detailed analysis of the structure and components of queries written by experimental participants in a study that manipulated two factors found to affect end-user information retrieval performance: training in Boolean logic and the type of search interface. As reported previously, we found that both Boolean training and the use of an assisted interface improved the participants' ability to find correct responses to information requests. Here, we examine the impact of these training and interface manipulations on the Boolean operators and search terms that comprise the submitted queries. Our analysis shows that both Boolean training and the use of an assisted interface improved the participants' ability to correctly utilize various operators. An unexpected finding is that this training also had a positive impact on term selection. The terms and, to a lesser extent, the operators comprising a query were important factors affecting the participants' performance in query tasks. Our findings demonstrate that even small training interventions can improve the users' search performance and highlight the need for additional information retrieval research into how search interfaces can provide superior support to today's untrained users of the Web.
    Source
    Information processing and management. 41(2005) no.4, S.801-817
  2. Lucas, W.; Topi, H.: Form and function : the impact of query term and operator usage on Web search results (2002) 0.00 
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    Abstract
    Conventional wisdom holds that queries to information retrieval systems will yield more relevant results if they contain multiple topic-related terms and use Boolean and phrase operators to enhance interpretation. Although studies have shown that the users of Web-based search engines typically enter short, term-based queries and rarely use search operators, little information exists concerning the effects of term and operator usage on the relevancy of search results. In this study, search engine users formulated queries on eight search topics. Each query was submitted to the user-specified search engine, and relevancy ratings for the retrieved pages were assigned. Expert-formulated queries were also submitted and provided a basis for comparing relevancy ratings across search engines. Data analysis based on our research model of the term and operator factors affecting relevancy was then conducted. The results show that the difference in the number of terms between expert and nonexpert searches, the percentage of matching terms between those searches, and the erroneous use of nonsupported operators in nonexpert searches explain most of the variation in the relevancy of search results. These findings highlight the need for designing search engine interfaces that provide greater support in the areas of term selection and operator usage
    Source
    Journal of the American Society for Information Science and technology. 53(2002) no.2, S.95-108
  3. Lucas, W.T.; Topi, H.: Training for Web search : will it get you in shape? (2004) 0.00 
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    Source
    Journal of the American Society for Information Science and Technology. 55(2004) no.13, S.1183-1198

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