bookmarks (hide)13
- Understanding the efficiency of social tagging systems using information theory
- Classical knowledge representation methods traditionally work with established relations such as synonymy, hierarchy and unspecified associations. Recent developments like ontologies and folksonomies show new forms of collaboration, indexing and knowledge representation and encourage the reconsideration of standard knowledge relationships. In a summarizing overview we show which relations are currently utilized in elaborated knowledge representation methods and which may be inherently hidden in folksonomies and ontologies.
- This paper presents a work in progress whose purpose is to model the handled, acquired, correct and erroneous knowledge of individual learners engaged in learning activities through virtual learning environments. This knowledge is represented according to a cognitivecomputational model which also serves to represent the domain knowledge via an authoring tool. The latter generates structures that allow the tutor to provide an effective feedback to improve significantly the cognitive level of the learner.
- EulerView incorporates a non-hierarchical classication structure to enable enhanced resource management. We apply the EulerView concept to the use of urls, constructing eli.icio.us which is a tool that realizes the EulerView concept and integrates it with del.icio.us. Currently, in del.icio.us, users can tag urls and browse for similar urls and the results can be displayed via an alphabetically sorted tag cloud. As well as facilitating easy tag management, using an EulerView display has the advantage that the user can use this representation for both tagging urls and for searching or browsing tasks, thus reducing any cognitive dif
- Recently, web browser based applications have become very popular in many domains. However, the specific requirements of interactive Information Visualization (InfoVis) applications in terms of graphics performance and interactivity have not yet been investigated systematically in this context. In order to assess browser-based application platforms, we provide a systematic comparison of server-based rendering, Java applets, Flash, and Silverlight from several points of view. We aim to aid InfoVis developers in choosing the appropriate technology for their needs.
publications (hide)20
- Tagging and Metadata for Social Information Organization Workshop in conjunction with the 16th International World Wide Web Conference, (May 2007)
- Proceedings of the Second International Conference on Weblogs and Social Media(ICWSM 2008), AAAI Press, (2008)
- (September 2008)
- IV '08: Proceedings of the 2008 12th International Conference Information Visualisation, page 616--625. Washington, DC, USA, IEEE Computer Society, (2008)
- IV '08: Proceedings of the 2008 12th International Conference Information Visualisation, page 302--307. Washington, DC, USA, IEEE Computer Society, (2008)
- IV '08: Proceedings of the 2008 12th International Conference Information Visualisation, page 644--649. Washington, DC, USA, IEEE Computer Society, (2008)
- ACM Comput. Surv., (2007)
- D-Lib Magazine, (January 2006)
- Computer, 32 (8): 68-75 (August 1999)
- AJS, 110 (4): 1206--1241 (January 2005)
- Proceedings of the Dagstuhl Seminar on Social Web Communities, (2008)
- Workshop on Search in Social Media SSM'08, in conjunction with CIKM'08, Napa Valley, USA, (2008)
- SIGIR '08: Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, page 531--538. New York, NY, USA, ACM, (2008)
- D-Lib Magazine, (April 2005)
- CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge mining, page 223--232. New York, NY, USA, ACM, (2008)
- HYPERTEXT '97: Proceedings of the eighth ACM conference on Hypertext, page 212--213. New York, NY, USA, ACM, (1997)
- HYPERTEXT '99: Proceedings of the tenth ACM Conference on Hypertext and hypermedia : returning to our diverse roots, page 61--70. New York, NY, USA, ACM, (1999)
- (2005)
- ACM Comput. Surv., 39 (3): 8 (2007)
- Information Visualisation, International Conference on, (2008)
