Public defence of Riina Vuorikari November 13 2009, Heerlen, NL
Public defence of Riina Vuorikari November 13 2009, Heerlen, NL
• Background: different ways to organise the world around us• Human-made• Self-organisation
• Context of the dissertation & the problem statement
• Hypothesis & structure of the study • Lessons learned
Presentation outline
Cataloguing and metadata
Stigmergy
Context of the dissertation
Discovering learning resources across language boundaries is challenging!
Main problem: the resource & its metadata description are made in a different context from where the
resource is discovered and/or actually used
Problem statement
Learning resources from
different countries and
in different languages do not cross-reference via hyperlinks!
Problem statement
Add a rating
New kid on the block - tagging
Add a tag
New patterns emerge
Social
tags
make
digital
trails
visible!
by Stiphy
The self-organisation aspect of a social tagging system on a learning resource portal helps users discover learning resources more efficiently.
User-generated tags make the system, which operates in a multilingual context, more robust and flexible.
Hypothesis
Setting the scene
Trilogy of empirical studies
What happens when users tag in multiple languages?
Are learning resources used across contexts?
2. Metadata ecology more robust and flexibile system
1. Ecology of social search more efficient users
3. Tags connect con-tent across contexts more flexibility
Structure of studies
Spanish resource
Tag «interactive»
Tags create link-structures beween
content in different languages
Finnish resource
Slovakian resource
Austria
Hungary
Finland
Resource that «Travels well»
Tags create link-structures beween
users in different countries
This opens novel ways for better cross-language discovery of learning resources, paving the way for
recommender systems, social navigation and ranking in this domain
Outcome
I would like to thank everyone involved in this research, especially...