Search (3 results, page 1 of 1)

  • × author_ss:"Dalrymple, P.W."
  • × year_i:[1990 TO 2000}
  1. Dalrymple, P.W.; Zweizig, D.L.: Users' experience of information retrieval systems : an exploration of the relationship between search experience and affective measures (1992) 0.03 
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    Abstract
    Reports on the factor analysis of affective data gathered from a study of searching behaviour in 2 library catalogues. 20 subjects were assigned information problems to solve through searching a university card catalogue and 20 were assigned the same problems to solve in a comparable online catalogue. After searches were completed, subjects were asked to evaluate their search results and to respond to attitude measures about the search experience. The 11 attitude itmes were constructed to tap a variety of affective responses to the attitude measures. Factor patterns in the data can serve to identify the dimensions on which search experiences are evaluated by users, to direct further investigation into user evaluations, and to suggest features for inclusion in information retrieval systems accessed directly by users
  2. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.02 
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    Date
    22. 7.2006 18:43:54
  3. Dalrymple, P.W.; Cox, R.: ¬An examination of the effects of non-Boolean enhancements to an information retrieval system (1992) 0.02 
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    Abstract
    One of the problems in information retrieval (IR) research is that few of the non-Boolean features of experimental systems developed by IR researchers have been adopted in commercially available systems which can be evaluated using real users with actual information needs. Without the opportunity to examnine how these features perform with actual bibliographic files and how they affect users in their information-seeking tasks, our understanding of information retrieval remains limited, and system development fails to advance. The research describes here compared two CD-ROM MEDLINE systems for the Macintosh, one of which incorporates many of the features previously identified by research as central to sound and innovative IR design such as: elimination of the need for Boolean logical connectors, acceptance of a natural language query, and ranked output. The other is more traditional in its design. Two groups of search topics selected from the National Library of Medicine's test queries in clinical medicine were searched using both a natural language strategy and a strategy based on MeSH vocabulary. results were compared on the following variables: search input and processing times, set size, overlap between sets produced by the two systems, and evaluative judgements made by subject experts. The findings indicate the these systems differ on these dimensions, and greater variance occurs in the natural language searches

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