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Avital Arora

 

Publications by Avital Arora (bibliography)

 what's this?
2001
 
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Francisco-Revilla, Luis, Shipman III, Frank M., Furuta, Richard, Karadkar, Unmil and Arora, Avital (2001): Perception of content, structure, and presentation changes in Web-based hypertext. In: Hypertext'01 - Proceedings of the Twelfth ACM Conference on Hypertext and Hypermedia August 14-18, 2001, Aarhus, Denmark. pp. 205-214. Available online

The Web provides access to a wide variety of information but much of this information is fluid; it changes, moves, and occasionally disappears. Bookmarks, paths over Web pages, and catalogs like Yahoo! are examples of page collections that can become out-of-date as changes are made to their components. Maintaining these collections requires that they be updated continuously. Tools to help in this maintenance require an understanding of what changes are important, such as when pages no longer exist, and what changes are not, such as when a visit counter changes. We performed a study to look at the effect of the type and quantity of change on people's perception of its importance. Subjects were presented pairs of Web pages with changes to either content (e.g., text), structure (e.g., links), or presentation (e.g., colors, layout). While changes in content were the most closely connected to subjects perceptions of the overall change to a page, subjects indicated a strong desire to be notified of structural changes. Subjects only considered the simultaneous change of many presentation characteristics as important.

© All rights reserved Francisco-Revilla et al. and/or ACM Press

 
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Francisco-Revilla, Luis, Shipman, Frank, Furuta, Richard, Karadkar, Unmil and Arora, Avital (2001): Managing Change on the Web. In: JCDL01: Proceedings of the 1st ACM/IEEE-CS Joint Conference on Digital Libraries 2001. pp. 67-76. Available online

Increasingly, digital libraries are being defined that collect pointers to World-Wide Web based resources rather than hold the resources themselves. Maintaining these collections is challenging due to distributed document ownership and high fluidity. Typically a collections maintainer has to assess the relevance of changes with little system aid. In this paper, we describe the Waldens Paths Path Manager, which assists a maintainer in discovering when relevant changes occur to linked resources. The approach and system design was informed by a study of how humans perceive changes of Web pages. The study indicated that structural changes are key in determining the overall change and that presentation changes are considered irrelevant.

© All rights reserved Francisco-Revilla et al. and/or ACM Press

 
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