Characteristics of users'needs and activities: A design space for interactive information retrieval systems
نویسندگان
چکیده
One of the new design challenges in Information Retrieval (IR) and Human Computer Interaction (HCI) is to face a huge quantity of structured and accessible information which is available to a variety of users having different information needs. This article proposes a dimension space that should help in the design of current and future interactive information retrieval systems. To do so, we adopt a user centered perspective: our problem space is comprised of 3 sets of dimensions. The two first ones are used to characterize the user: her/his information needs and her/his knowledge about the system. The third set of dimensions deals with the notion of input expression: how the user specifies her/his information need. Based on our design space and Norman's Theory of Actions we then model users' activities while accomplishing a retrieval task. The discussion is illustrated with IRIS-M, an Interactive Information Retrieval System that we have developed.
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