Search (2 results, page 1 of 1)

  • × author_ss:"Nordlie, R."
  • × year_i:[1990 TO 2000}
  • × theme_ss:"Benutzerstudien"
  1. Nordlie, R.: Unmediated and mediated information saerching in the public library (1996) 0.00 
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    Abstract
    Reports a study of 40 audiotaped reference interactions between librarians and public library users. Analyzes the data to identify patterns of interaction, with a focus on users' problem formulation, librarians' elicitation of information from the user, unsolicited information provided by the users and the effect of these factors for the outcome of the interaction. Compares the results with studies of public library user behaviour in unassisted online catalogue searches. Users' initial query formulations are similar in the 2 situations. In the mediated searches, ambiguities are resolved and users' information needs are determined while interacting with the material on the shelf. Replication of this functionality in the online catalogue's interaction with the user would solve many problems in unassisted end user searches
    Imprint
    Medford, NJ : Learned Information
    Source
    Global complexity: information, chaos and control. Proceedings of the 59th Annual Meeting of the American Society for Information Science, ASIS'96, Baltimore, Maryland, 21-24 Oct 1996. Ed.: S. Hardin
  2. Kantor, P.B.; Nordlie, R.: Models of the behavior of people searching the Internet : a Petri net approach (1999) 0.00 
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    Abstract
    Previous models of searching behavior have taken as their foundation the Markov model of random processes. In this model, the next action that a user takes is determined by a probabilistic rule which is conditioned by the most recent experiences of the user. This model, which has achieved very limited success in describing real data, is at odds with the evidence of introspection in a crucial way. Introspection reveals that when we search we are, more or less, in a state of expectancy, which can be satisfied in a number of ways. In addition, the state can be modified by the accumulated evidence of our searches. The Markov model approach can not readily accommodate such persistence of intention and behavior. The Petri Net model, which has been developed to analyze the interdependencies among events in a communications network, can be adapted to this situation. In this adaptation, the so-called "transitions" of the Petri Net occur only when their necessary pre-conditions have been met. We are able to show that various key abstractions of information finding, such as "document relevance", "a desired number of relevant documents", "discouragement", "exhaustion" and "satisfaction" can all be modeled using the Petri Net framework. Further, we show that this model leads naturally to a new approach to the collection of user data, and to the analysis of transaction logs, by providing a far richer description of the user's present state, without inducing a combinatorial explosion
    Imprint
    Medford, NJ : Information Today
    Series
    Proceedings of the American Society for Information Science; vol.36
    Source
    Knowledge: creation, organization and use. Proceedings of the 62nd Annual Meeting of the American Society for Information Science, 31.10.-4.11.1999. Ed.: L. Woods

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