1. A Rich OPAC User Interface with AJAX Jesse Prabawa Gozali and Min-Yen Kan WING (Web IR / NLP Group) National University of Singapore

2. Jesse Prabawa and Min-Yen Kan, Digital Libraries 222 June 2007 - JCDL (Session O)2Web IR / NLP Group @ NUS Introduction and Motivation 1.Finding the right keywords 2.Toggling between results, details, results, details… 3.Modest search history 4.How do I sort by title or year? 3 1 2 4

3. Jesse Prabawa and Min-Yen Kan, Digital Libraries 322 June 2007 - JCDL (Session O) Related Works Google’s multiple suggestionsEndeca’s guided navigation (NCSU Libraries) PINES' incremental loading (Georgia Library) Conclusion Cosmetic difference Page-oriented None specifically dealing with: Interaction history Seeing overview and details simultaneously

4. Jesse Prabawa and Min-Yen Kan, Digital Libraries 422 June 2007 - JCDL (Session O) Key areas of improvement Goal –Leverage current dynamic web technologies to provide a usable and rich environment that better supports user information-seeking tasks. Key Areas –Keyword suggestions –Dual-pane view: Overview + Details –Tabs as a history mechanism –Rich results table: sort, add, remove columns Web IR / NLP Group @ NUS

5. Jesse Prabawa and Min-Yen Kan, Digital Libraries 522 June 2007 - JCDL (Session O)5Web IR / NLP Group @ NUS A Richer Dynamic User Interface 1.Embedded keyword suggestions 2.Dynamic views: Overview + Details 3.Tabs for parallel search strategies 4.Sort, add, remove columns 3 1 2 4

6. Jesse Prabawa and Min-Yen Kan, Digital Libraries 622 June 2007 - JCDL (Session O)6Web IR / NLP Group @ NUS Prototype Demo http://opac.comp.nus.edu.sg Differs slightly from system mentioned in the paper

7. Jesse Prabawa and Min-Yen Kan, Digital Libraries 722 June 2007 - JCDL (Session O) Evaluation Results Formative Evaluation (Dec 2006): –5 users performed 2 tasks each –Overview + Details: easy to use, helpful after a brief demo –Users didn’t sort or edit columns, but when prompted had no problems guessing how to do it. –Users were comfortable and familiar with tabbed nav, even within a tabbed web-browser. –Placement of Suggestion Bar was problematic: users skipped directly to results, missing the Suggestion Bar. Web IR / NLP Group @ NUS

8. Jesse Prabawa and Min-Yen Kan, Digital Libraries 822 June 2007 - JCDL (Session O) Evaluation Results Summative Evaluation (Feb 2007): –30 users performed 4 tasks each –Overview + Details: 61% adoption rate on all four scenarios; 84% adoption rate for research/browsing scenario –Table of results: 89% had no problems sorting results. 82% had not problems editing the columns. –Tabs as a history mechanism: 77% noticed the tabs, out of which 52% only noticed after two tabs were visible –Embedded Suggestion Bar: 60% noticed in the first encounter, 27% at the second time, and 10% at the third time. Only 3% did not notice at all. Web IR / NLP Group @ NUS

9. Jesse Prabawa and Min-Yen Kan, Digital Libraries 922 June 2007 - JCDL (Session O) Conclusion Key contributions: –Embedded multiple keyword-suggestions –Overview + Details –Tabs as history and parallel-search mechanism –Rich table controls Timeline: –Prototype online at http://opac.comp.nus.edu.sghttp://opac.comp.nus.edu.sg –Deploying with metadata in July 2007 –Longer-term evaluation and rate of user acceptance

10. Jesse Prabawa and Min-Yen Kan, Digital Libraries 1022 June 2007 - JCDL (Session O) End of Presentation Backup Slides follow

11. Jesse Prabawa and Min-Yen Kan, Digital Libraries 1122 June 2007 - JCDL (Session O)11Web IR / NLP Group @ NUS User Interface Mockup September, 2006

12. Jesse Prabawa and Min-Yen Kan, Digital Libraries 1222 June 2007 - JCDL (Session O)12Web IR / NLP Group @ NUS December, 2006 First working prototype

13. Jesse Prabawa and Min-Yen Kan, Digital Libraries 1322 June 2007 - JCDL (Session O)13Web IR / NLP Group @ NUS February, 2007 Second working prototype

14. Jesse Prabawa and Min-Yen Kan, Digital Libraries 1422 June 2007 - JCDL (Session O)14Web IR / NLP Group @ NUS March, 2007 Current Design