Tuesday, September 30, 2008

PAWS Meeting 09-30-2008


We started one hour later this week. Danielle's presentated on "Why people tag". She based it on the two following two papers:

  • Ames, M and Naanan, M. Why We Tag: Motivations for Annotation in Mobile Online Media. CHI 2007.
  • Nov, O and Naanan, M and Ye, C. What Drives Content Tagging: The Case of Photos on Flickr. CHI 2008.

Rosta raised a question: "why people don't tag".


Peter suggested discussing Conference Navigator some time soon.

Reminder: No meeting next week.

Monday, September 29, 2008

PAWS Meeting 2008-9-16

Dhruba talked about his work on promoting social awareness.
Three systems have been presented, that follow the same approach - providing holistic visualization of activity going on in a small group (2 to 20 people).
The contributions of single users are represented based along with the novelty of a contribution.
The systems are:
1. Vlaag: supports a small group concentrating on a certain task such as planning the event or discussing a small topic. The system is used as an discussion aggregator. Instead of mailing her/his contribution to everyone in a group a user posts it to Vlaag. S/he can also see there the other users' posts, see who has been active and react on the most recent contributions.

2. Peercev.com provides visualization for twitter.com. The system retrieves twits that the user is following and creates a map, where s/he can observe who and when has been added new information.

3. my.like.groups is a similar client for citulike.com. The system creates two kinds of visualization:
- user centric, showing the recent activity of the communities that the user is part of, and
- community centric, showing the contributions of all users in a community.

Several ways of developing the systems have been suggested:
- so far systems do not model/take into account tags, which could help a user to do meaningful information filtering
- the created maps are not clickable. By clicking on a user, the system could open its communities, by clicking a community a system could unfold all its users, etc. Supporting navigation over a social network seems like a nice idea.

Tuesday, September 09, 2008

PAWS Meeting 2008-9-9

Topic: Peer Review
Speaker: Sharon
1) PeerWise
  • multiple-choice question
  • Auckland, UBC
  • Large class
  • Be able to rate difficulty each question: 0 - 5
  • Be able to identify question into category
  • Active use of the system may contribute to deep learning
2) Open community authoring of targeted worked example problems
  • A prototype tutor authoring system using community volunteers to create personalized solution
  • Four phase: Generation, Evaluation, Use, and Improvement
  • Elementary Math Domain
  • Question quality: Math teacher > Amateur > Other teacher
  • Solution quality: Amateur > Math teacher > Other teacher
  • Educational content system can benefit from open contribution


Tuesday, September 02, 2008

PAWS Meeting 2008-09-02

Inaugural meeting for the Fall 2008 series

Jaewook presenting 4 of his systems:
- YourNews
- YourSports
- TaskSieve
- NameSieve

YourNews. News aggregator. Open user modeling. Short/Long-term model based on sessions and time. Allows individual feeds and tabs of feeds to be added, keyword-based user model allows addition/removal of keywords for user model fine tuning.

YourSports. A clone of YourNews for news related to 3 major US sports: baseball, football, and hockey.

TaskSieve. Task related news exploration. Based on TDT4 data set. No personalization. Note-taking for specific tasks.
NameSieve. Based on TDT4 data set with respect to 4W(who, what, where, when). Utilizes external name entity extractors.