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AIS SIGHCI, December 2002

Levels of abstraction in Web-books – the communication perspective by Dov Te’eni in collaboration with Hadar Ronen. AIS SIGHCI, December 2002. Talk plan. Demonstrate the Web-book; Levels; navigation Motivation – professional texts can/should be organized

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AIS SIGHCI, December 2002

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  1. Levels of abstraction in Web-books – the communication perspectivebyDov Te’eniin collaboration with Hadar Ronen AIS SIGHCI, December 2002

  2. Talk plan • Demonstrate the Web-book; Levels; navigation • Motivation – professional texts can/should be organized • Behavior: focused browsers, general browsers • Study I: Observations of visitors • Study II: focused browsers vs. assumed general browsers • Study III: search tasks vs. browsing tasks • Discussion

  3. Category of e-Books Current version –manual adaptation with a view for fit between task, medium, knowledge form, user type and reading task. Te’eni 2001: Printed: http://misq.org/archivist/bestpaper/teeni.pdf Webbook: http://faculty.biu.ac.il/~teenid/ebook/teeni.htm ebook

  4. Motivation • Offer a new way of thinking about a professional web-book: adaptive communication • Feasible to construct it on levels of abstraction • Impose a hierarchical structure on complex hypertext • To all this we need to know more about how people behave with these structures!!

  5. Study I: observing the traces left by unsolicited visitors 1500 visitors in 3 months, over 1 minute

  6. 3 levels of abstraction

  7. Abstract 1 5 6 2 3 1.1 1.2 1.3 5.1 6.1 5.2 6.2 5.3 2.1 6.3 5.4 2.2 5.5 2.3 3.1 3.2 3.3 1.1.1 1.2.1 6.1.1 6.1.2 6.1.3 6.2.1 2.1.1 6.2.2 2.2.1 6.2.3 2.3.1 6.2.4 6.2.5 4 5.4.1 5.4.2 5.4.3 5.4.4 5.1.1 5.1.2 5.1.3 3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.5.1 5.5.2 5.5.3 4.1.1 4.1.2 5.3.1 5.3.2 5.3.3 5.3.4 5.3.5 5.3.6 4.3.1 4.3.2 4.3.3 4.3.4 4.7.1 4.7.2 4.5.1 3.3.0 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.3.6 4.2.1 4.2.2 4.2.3 4.2.4 4.9.1 4.9.2 4.6.1 4.6.2 4.6.3 4.6.4 4.6.5 4.6.6 Entries Av. Time

  8. Taking the (sequential) hi-way! Running out of fuel quickly.

  9. Study II: focused browsing General browsing – gathering information while scanning an information space without a predefined target in the text. Focused browsing – retrieving information to solve some problem or meet some target. … Complexity Expectation – focused browsing uses transitions between levels instrumentallyto ensure effectivecommunication, while general browsing follow texts that seem interesting or easy to access.

  10. Goal Formation Control Category selection Integration • Initiate search • Exit search • Monitor search Information Extraction Flow of information Te’eni & Feldman, 2001 Flow of control

  11. results Focused browsers used TOC and navigation diagrams more frequently, and frequencies of visits by levels were: General (61, 26, 13) Focused (78, 16, 6)

  12. "Would you tell me, please, which way I ought to go from here?" "That depends a good deal on where you want to get to," said the Cat. "I don't much care where --" said Alice. "Then it doesn't much matter which way you go," said the Cat. … " so long as I get somewhere," Alice added as an explanation. "Oh, you're sure to do that," said the Cat, "if only you walk long enough."

  13. Study III: experiment with 1) search and browsing tasks; 2) enhanced vs. regular navigation diagrams

  14. User Interface without manipulation (WFB + History)

  15. User Interface with manipulation (WFB + History (gray areas))

  16. User Interface with manipulation– as it should be seen at the end of 8 tasks, following the “Optimal” route.

  17. Tasks • What is the first communication goal? • What is the name of communication strategy #2? * • What is the name of communication goal #3? • Read about communication impacts and name the person who developed the theory of communicative action? • With reference to Proposition 2B a) what is the name of the proposition? b) on the impact of which strategy does it hypothesize? • what type of communication complexity affects the strategy of affectivity? * • to which chapter does proposition 10 belong? • go to proposition 8, then go the page located two pages before it, and find the section title to which that page belongs, and go to it.

  18. Large number of levels transitions while non-focused browsing (task 9)

  19. WFB NoWFB Tasks 3,6. : requiring knowledge of history of visits User 51 (WFB) – 2,0 transitions User 46 (NWFB) – 17 transitions Question3, User 50 (NWFB) –11 tran. Task 6. All have correct answers.

  20. Number of redundant transitions

  21. Task T1 T2 T3 T4 T5a T5b T6 T7 T8 T9

  22. Task T1 T2 T3 T4 T5aT5bT6T7 T8 T9

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