1. ReMarkable Texts Loring Holden Brown University April 20, 2004

2. Goals (1/2) Provide student app for ConferenceXP to complement Presenter Create research platform for note taking – hard to extend existing note taking applications – our attempted remedy  BSD Open Source license  Plug-in architecture

3. Goals (2/2) Forge novel application Aggregate functionality previously available only in separate apps Formative evaluation in an academic (and possibly DoD training) setting

4. Summary What is different? –Gestural UI –Collaboration –Archiving and history playback –Interoperates w/ rest of Conference XP –BSD open source license

5. Collaboration Implementation N-way synchronous document & annotation sharing Scalability Uses ConferenceXP for multicast Classroom variant has only one sender, so better scalability Symmetric: Any participant can exit and rejoin easily Collaboration metadata incorporated into document

6. Collaboration metadata provides Control over your own notes – Privacy – ACL's (who can modify?) Mining – Author ID integrated into the system Filter by user – Querying, for example:  What user wrote a particular stroke? (querying stroke for user info)  Which strokes were written by a particular user? (filtering by user)  When did who write what? (filtering by time)

7. Collaborative note taking – future work Easier collaboration startup Easily fall back to asynch. collaboration when user not available Figure out how each person’s doc looked at a specific time (people may have added ink at the same time, but the other person’s ink didn’t get imported until later) – Also show other docs open at the same time

8. Sponsors and Availability Co-funded by: – Microsoft Research, Microsoft TabletPC – NSF National Science Digital Library program – DoD Joint Advanced Distributed Learning Co-Lab Publicly available: – http://ReMarkableTexts.org