Abstract 1 1 Introduction 2
Appendix A: Examples of Navigation Tools
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- CASCADE: Computer Augmented Support for Collaborative Authoring and Document Editing
- Cheops Hierarchy Browser
- Cone Trees
Appendix A: Examples of Navigation ToolsButterfly: Organic Citation Searching
Reference: Jock D.Mackinlay, Ramana Rao, and Stuart K.Card. An organic user interface for searching citation links. Proceedings of ACM CHI'95 Conference on Human Factors in Computing Systems 1995 v.1 p.67-73 URL: http://www.parc.xerox.com/istl/projects/uir/projects/InformationVisualization.html Butterfly is an application for accessing DIALOG's Science Citation database across the Internet. It integrates search, browsing, and access management. It contains seven areas as shown above. Once queries are made, the articles retrieved as results are shown in a “result pyramid”. All results are shown together as overlapping layers. When an article is selected, the result is presented as the “head” of a butterfly. Details, including title, author, etc. are shown as well. The “left wing” of the butterfly presents a list the article's references; the “right wing” presents a list of the articles in which the “head” is cited. Both lists are active, i.e. clicking will create a new butterfly from the selected article. The old butterfly will fold as a bar to the left or the right of the new one. All data is color encoded, by sources. Clicking at the head of a butterfly creates a text widget containing an article reference. This text widget may then be put in a “pile.” The 3D scatter plot presents retrieved article information. The points represent articles plotted against time, the alphabetic sort of the last name of the first author of an article, and the number of known citers of an article. Edges show the citation relationships among articles. CASCADE: Computer Augmented Support for Collaborative Authoring and Document Editing
Reference: Spring, M. B., Morse, E., & Heo, M. Multi-level Navigation of a Document Space. Leveraging Cyberspace Conference Palo Alto, CA, 1996. URL: http://www.sis.pitt.edu/~cascade/ The CASCADE system is designed for groups of people working together with documents. There are multiple navigation tools for the CASCADE document space that address different scales of space. The document content is presented by a document viewer and a mural; comment locations are indicated. File/folder view shows files and folders as icon bars. The color and small icon is an indicator for file and folder type. A browser and expand/collapse show a structure of the space in traditional tree form. A docuverse presents the overall document space with color encoding of single attribute and the hierarchical structure in circular form.
Cheops Hierarchy Browser 
Reference: Luc Beaudoin, Marc-Antoine Parent and Louis C. Vroomen. Cheops: A Compact Explorer for Complex Hierarchies. IEEE Visualization '96 Conference October 30, 1996 San-Francisco URL: http://www.crim.ca/ipsi/cheops/
Reference: George Robertson, Jock Mackinlay, and Stuart Card. Cone Trees: Animated 3D Visualizations of Hierarchical Information. Proceedings of ACM CHI'91 Conference on Human Factors in Computing Systems p.189-194. A Cone Tree is a 3D representation of a tree structure. It is similar to a circular mobile. The root of the tree is located at the tip of a transparent cone. The children of the root node are arranged around the base of the cone. Each child can be the root node of a sub-tree, represented recursively by a cone whose tip is located at the object representing the child. Each node represents some object, square label, sphere, etc. A Cam Tree is a variation of a Cone Tree, but in a horizontal orientation which is suitable for displaying a text label. A Cone Tree is more compact than a general tree representation because it allows overlap of nodes during visual presentation. Half the children of a node will be in the back on each cone, and sub-tree cones will overlap each other when the cone tree is projected into a 2D screen. Local rotation of each sub-tree is used to present occluded nodes. Animation is used during rotation to shift the cognitive load to the perceptual system and to maintain the relationship between sub-trees. Lighting cues are used to enhance the 3D effect, e.g. near by objects are brighter than distant ones. Shadows show additional information about structure. 3D representation also provides fish eye effect, i.e. the selected sub-tree will be bigger. Operations on cone trees include prune/grow sub-tree, move sub-tree, and filter sub-tree by search term. Download 324.2 Kb. Share with your friends:
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