1 The UNCHIKU System A Platform for Collaborative Learning and Knowledge Development with Online Community Mitsuyuki Inaba College of Policy Science Ritsumeikan University Feb. 18, 2002

2 Traditional E-Learning Process Domain Professionals Analog Contents Designer Digital Learning Materials Students (Contents Consumer) Designing and developing learning materials. Publishing contents on the computer-network.

3 Background of Collaborative Learning “The importance of individuals’ participation in the community of practice”  Vygotsky (1978) –Socio Cultural Approach  Rogoff (1995) –Participatory Appropriation  Lave (1991) –Legitimate Peripheral Participation

4 Requirements for CSCL Environment  Developing a Community of Practice in cyber space  Creating mechanisms for participation in, and contribution to the Community  Motivating participants’ learning with feedbacks for their contributions to the Community

5 UNCHIKU(1): Web-based Collaborative Learning Environment Voting Query Learning Materials Answer Agreement Disagreement Critiquing Explicit Knowledge Tacit Knowledge Discussio n Evaluatio n Contents Building Providing Authoring Prioritizing Feedback

6 UNCHIKU(2): Collaborative Development of Hypertext Structure Annotation Link (can be created by any users) Relation Link (can be created by users at a “domain professional” level.) Reference Link (automatically created by the UNCHIKU system.) Web Document 1 “Digital Archive” is a new approach to implement …. ARC is working on digitizing Japanese Arts which include …. Motion Capture technology enables to…. Web Document 4 … has organized a conference on Digital Archive. Web Document 2 Web Document 3

7 UNCHIKU(3): Collaborative Filtering  Users can evaluate posted articles through voting.  Preference setting allows users to highlight or hide hyperlinks based on the votes.  Once a user gets a certain number of positive votes, he/she is recognized as a “Domain Professional” level user who has permission to define Relation Links on the archive contents Preference: Hide if the point is less than -1. Preference: Show all documents.

8 UNCHIKU(4): Providing Community and Knowledge Awareness Ａ Ｑ Ｑ Ｑ Ｃ Ａ Ｑ Ａ Ｑ Ａ Ｑ Ａ Ｃ Ｃ Ａ Ａ Ａ ＱＱＱ (1) Community Awareness - Visualizing activity participations of the community - Analyzing the position of each participant in the community with Network Analysis Tools. - Visualizing structures of contents and discussions. (2) Knowledge Awareness

9 Community of Practice: Virtual Classrooms with UNCHIKU  Students can freely add their comments to the classroom contents  Students can exchange knowledge with a teacher and other classroom participants  Students can increase their motivation to learn through receiving feedbacks for their inputs

10 Screen Image of Virtual Classroom with UNCHIKU Contents Visualization Community Visualization (Detail View) Community Visualization Closeness and Degree Centrality Analysis Clique Analysis