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  • × author_ss:"Derr, R.L."
  • × theme_ss:"Informationsdienstleistungen"
  1. Derr, R.L.: ¬A conceptual analysis of information need (1983) 0.01
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    Abstract
    The necessary and sufficient conditions for saying that X has a need for certain information are identified. It is concluded that an information need is a condition in which certain information contributes to the achievement of a genuine or legitimate information purpose. Information need is a relationship which obtains between information and information purpose; it is not a psychological state. Implications for research and practice are drawn from the conceptual analysis
    Source
    Information processing and management. 19(1983), S.273-278
  2. Derr, R.L.: Information seeking expressions of users (1984) 0.01
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    Abstract
    Five types of information seeking expressions of users are identified by an analysis of a sample of such expressions and of analogous expressions in another social context. The treatment of these expressions in the literature of information retrieval is reviewed. two recommendations are offered: (1) information specialists should call questions 'questions,' requests 'requests,' statements 'statements,' commands 'commands,' and truncated expressions 'truncated expressions,' and (2) both the search interview and the search itself should focus upon user questions
    Source
    Journal of the American Society for Information Science. 35(1984) no.2, S.124-128
  3. Derr, R.L.: Questions: definitions, structure, and classification (1985) 0.00
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    Abstract
    A conception of the nature and structure of user questions is presented. A classification of questions, in which questions are classified on the basis of their conceptual presupposition, also id presented. Examples of user questions are provided along with an analysis of their structure. Rules for making a structural analysis of questions and for classifying questions are provided. The use of these devices should facilitate the processing of user questions and the performance of information systems