When presenting complex, multidimensional data to users, emphasis of relevant information plays an important role. Especially when data is arranged according to several criteria, the simultaneous use of multiple visualization metaphors frequently results in information overload and unintuitive visualizations. In this paper, we present a comparison of preattentive visual features specifically for highlighting relevance of data extracted from electronic documents in an information-rich virtual environment. Several visual cues were evaluated with regard to their effectivity, comprehensibility and influence on other visualized features. At the same time we introduce two innovative data handling techniques to achieve practical applicability of our system: An intuitive way to reduce visual cluttering of information by filtering information based on its visual depth and a way to efficiently utilize visualizations of different dimensions - dimensional congruence
We present a novel user interface in the form of a complementary virtual environment for managing personal document archives, i.e., for document filing and retrieval. Our implementation of a spatial medium for document interaction, exploratory search and active navigation plays to the strengths of human visual information processing and further stimulates it.Our system provides a high degree of immersion so that the user readily forgets the artificiality of our environment. Three well-integrated features support this immersion: first, we enable users to interact more naturally through gestures and postures (the system can be taught custom ones); second, we exploit 3D display technology; and third, we allow users to manage arrangements (manually edited structures, as well as computer-generated semantic structures). Our ongoing evaluation indicates that even non-expert users can efficiently work with the information in a document collection and that the process can actually be enjoyable.
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