Name
Abstract | ||
|---|---|---|
Many tree browsers allow subtrees under a node to be collapsed or expanded, enabling the user to control screen space usage and selectively drill-down. However, explicit expansion of nodes can be tedious. Expand-ahead is a space-filling strategy by which some nodes are automatically expanded to fill available screen space, without expanding so far that nodes are shown at a reduced size or outside the viewport. This often allows a user exploring the tree to see further down the tree without the effort required in a traditional browser. It also means the user can sometimes drill-down a path faster, by skipping over levels of the tree that are automatically expanded for them. Expand-ahead differs from many detail-in-context techniques in that there is no scaling or distortion involved. We present 1D and 2D prototype implementations of expand-ahead, and identify various design issues and possible enhancements to our designs. Our prototypes support smooth, animated transitions between different views of a tree. We also present the results of a controlled experiment which show that, under certain conditions, users are able to drill-down faster with expand-ahead than without. |
Year | DOI | Venue |
|---|---|---|
2004 | 10.1109/INFVIS.2004.21 | Austin, TX |
Keywords | Field | DocType |
computer animation,tree data structures,user interfaces,adaptive user interfaces,automatic expansion,detail-in-context techniques,drill-down faster,expand-ahead space-filling strategy,tree browsing,user navigation,adaptive user interfaces,automatic expansion,expandahead,focus+context,space filling,tree browsing and navigation | Viewport,Computer science,Tree (data structure),Implementation,Theoretical computer science,Controlled experiment,Computer animation,User interface,Fractal tree index,Distortion | Conference |
ISSN | ISBN | Citations |
1522-404X | 0-7803-8779-3 | 12 |
PageRank | References | Authors |
0.74 | 9 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Michael J. McGuffin | 1 | 989 | 54.52 |
| Gord Davison | 2 | 12 | 0.74 |
| Ravin Balakrishnan | 3 | 6497 | 403.55 |