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Galaxies

Reference: Beth Hetzler, Nancy Miller. Four Critical Elements for Designing Information Exploration Systems. SIGCHI '98 workshop on Innovation and Evaluation in Information Exploration Interfaces. April 1998, Los Angeles. ACM.

URL: http://multimedia.pnl.gov:2080/infoviz/technologies.html
The Galaxies visualization is deployed as part of the SPIRE information visualization tool suite. In Galaxies, documents are represented as a single dot, a “docustar” in 2D space. The distances between documents implies similarity. (No detailed information is provided about how documents are placed in space.) Interaction allows users to query for particular terms, form groups, and see changes over time.

Hyperbolic Browser

References: Lamping, J., Rao, R. and Pirolli, P. A., Focus+context technique based on hyperbolic geometry for visualizing large hierarchies. Human Factors in Computing Systems: Mosaic of Creativity: CHI'95 Conference Proceedings, May 7-11, 1995, Denver, Colorado, USA. ACM.

URL: http://www.inxight.com/Content/48.html#technical
The Hyperbolic Browser is a focus+context technique for visualizing and manipulating large hierarchies. The hierarchical structure is represented by nodes and links, showing parent /child relations. Nodes are laid out in a uniform way on a hyperbolic plane. The hyperbolic plane is then mapped to a planar display. On a hyperbolic surface, the parallel lines diverge from each other; the greater the distance from the center, the faster the radius exponentially grows. This plan provides a suitable surface for hierarchical structures, where the children at the outer level tend to increase exponentially in number. These mappings produce a fisheye effect; i.e., the display area at the center is bigger and the periphery fades away. The projection also maintains an overall structure view.
To navigate through the hyperbolic browser, the user moves a node into the center. All other nodes move around, preserving the mapping.
Hyperbolic browser is used in NetCarta, Webmapper and SoftQuad HoTMetL Intranet Publisher as Web site viewer. The network structure, i.e., web site, is presented as a tree. The backward link presents a duplicate target node as a child.

InfoBUG

Reference: Mei C. Chuah and Stephen G. Eick., Glyphs for Software Visualization. 5th International Workshop on Program Comprehension (IWPC '97) Proceedings, IEEE Computer Society Press, Dearborn, Michigan, pages 183-191, May 1997.

InfoBUG uses glyphs to represent software project information. The glyph forms a kind of “bug.” The “head” shows different types of code in projects. A color code is used for each type. The length of antenna shows relative code size by type. The left “wing” encodes time, from top to bottom, and the relative number of lines of code. The right “wing” encodes time and the relative number of errors. The “body” encodes the number of file changes in a bar at the center. The size of a black dot inside the body shows the number of child objects. For example, three dots show that the software is partitioned into three major components. The “tail” is a triangle whose width represents the number of lines added to source code, and height shows the number of lines deleted.
The “wing” of InfoBUG is interactive. Click at a wing, time position will determine and change information in the head, body, and tail. InforBUG time for all objects can be changed simultaneously by using time slide.

LyberWorld

Reference: Hemmje, M., LyberWorld - A 3D graphical user interface for fulltext retrieval. Human Factors in Computing Systems: Mosaic of Creativity: CHI'95 Conference Proceedings, May 7-11, 1995, Denver, Colorado, USA.

Hemmje, M., Kunkel, C., and Willett, A., LyberWorld - A visualization user interface supporting fulltext retrieval. SIGIR'94: Proceedings of the Seventeenth Annual International ACM-SIGIR Conference on Research and Development in Information Retrieval, July 3-6, 1994, Dublin, Ireland.

URL: http://www-cui.darmstadt.gmd.de/visit/People/hemmje/Activities/Lyberworld/

Developed for information retrieval, LyberWorld views retrieval as spatial navigation. The content space is equal to all information in a database. The user explores this space, searching for data. The context space is the history of the explored area during a session of searching. The search process involves viewing a content space and expanding context space. It produces a content-oriented search path. A path length, the distance between connected items, correlates to the relevance of information items to each other. There are many possible models. One model uses documents and terms as nodes in the content space and links data items in three ways, document-document link, term-document link, and term-term link.
The LyberWorld visual interface integrates a navigation tool and an information tool to aid the user during searching. As implemented, the navigation tool is a NavigationCone and the information tool is a RelevanceSphere.
NavigationCone is a Cone Tree. The network data, content space, is computed as a tree with duplication of nodes allowed, as well as with hidden paths and circular links. Term nodes, document nodes, and visited nodes are color-coded. The nodes that contain hidden paths are shown with a different icon shape.
RelevanceSphere is an information tool that provides relevance judgements. The term nodes are placed on the surface of the sphere and document nodes are positioned inside the sphere. The distances between document nodes to terms are similar to VIBE, i.e. based on ratio of relevance. Term nodes can be repositioned on the surface of the sphere.

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