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This paper presents a reactive interface display which allows information seekers to explore complex information spaces. We have adopted information seeking dialogue as a fundamental model of interaction and implemented a prototype system in the mapping domain-GeoSpace-which progressively provides information upon a user's input queries. Domain knowledge is represented in a form of information presentation plan modules, and an activation spreading network technique is used to determine the relevance of information. The reactive nature of the activation spreading network, combined with visual design techniques, such as typography, color and transparency enables the system to support the information seeker in exploring the complex information space. The system also incorporates a simple learning mechanism which enables the system to adapt the display to a particular user's preferences. GeoSpace allows users to rapidly identify information in a dense display and it cali guide a users' attention in a fluid manner while preserving overall context.
Lokuge et al. (Sun,) studied this question.