1. A Scrollbar-based Visualization for Document Navigation Donald Byrd Proceedings of the 4 th ACM conference on Digital libraries, 1999. 元智資工所 系統實驗室 楊錫謦 2000/8/16

2. Outline Introduction A Different Scrollbar Future Work & Conclusion

3. Introduction  For great many users, current best-match text- retrieval systems leave much to be desired.  review of results  They devised a visualization centered around a content-displaying scrollbar and color term highlighting.

4. Introduction(Cont.)  Visualization for Document Retrieval VQ: the query alone VQDB: the query in relation to the database VQR: the query in relation to individual retrieved documents VRR: the retrieved documents in relation to each other

5. Introduction(Cont.)  IR researchers have proposed many VQR’s. document lens TileBars Their single bars for term contributions to document score  They feel that seeing term locations in an overview is not that helpful.(TileBars)

7. A Different Scrollbar  The visualization has: Occurrences of each different word in the query and its variants are highlighted in a different color. The vertical scrollbar contains small icons in the same color. An area at the bottom of the window contains a legend relating the words and colors.

8. A Different Scrollbar(Cont.)  The idea is to help the user find as quickly as possible the parts of the documents that are most likely to be relevant.

10. Future Work & Conclusion  Like many visualization, theirs does not scale well in all respects. It is difficult to distinguish more than about 5 colors. - larger icons - cluster the query terms

11. Future Work & Conclusion(Cont.)  It is not limited to showing only the results of search.  Displaying indications of document content in scrollbars in whatever form has great potential to make programs of many types easier to use.