SEMINARIOS EN INGENIERÍA INFORMÁTICA Y DE
TELECOMUNICACIÓN 2006-2007
Doctorado en Ingeniería
Informática y de
Telecomunicación
Programa Oficial de Posgrado en Ingeniería
Informática y de Telecomunicación
Escuela Politécnica Superior, Universidad Autónoma de
Madrid
30 de Marzo de 2007, 12:00
Salón de Grados, Escuela Politécnica Superior,
Universidad Autónoma de Madrid
Realizing Interoperability of E-Learning Repositories
Daniel Olmedilla de la Calle
L3S Research Center & Hannover University
Abstract
After the boom of Internet a huge amount of information is available on the
Web. Does that mean that users can easily and effectively find the specific
information they seek? The answer is no. For example, searchers successfully
find what they seek only 50% of the time or less (and they spend 15% to 35%
of their time searching for information). This is due to the lack of
interoperability and information overload. On the one hand, a big portion of
the available information is not easily accessible for consumption but closed
under each information source where it is stored. Users may need to access
each information source individually in order to collect relevant
information. On the other hand, keyword based queries may return an difficult
to manage number of relevant results therefore showing the need for more
accurate query languages and sorting mechanisms.
The work described in this presentation contributes to enhance the overall interoperability perspective
in current e-learning management systems and on-line learning object
repositories as well as each of the steps which need to be followed towards
achieving such a goal, namely common query language, common schema, semantic
integration and ranking. This work improves or overcomes the main challenges
for interoperability in order to enhance existing approaches and increase
their efficiency and effectiveness from both the provider's and consumer's
perspective.
PDF
presentation
Nombre/Name
Daniel Olmedilla is a scientist at the L3S Research Center. He participates in the research Network of Excellence REWERSE and PROLEARN,
the Integrated Project TENCompetence and the STREP ELENA where his research
focuses on interoperability of educational systems, reasoning and trust and
security management. On these topics, he has published 30 scientific papers
in international journals, contributed volumes and conference proceedings. In
addition, he has co-organized several workshops (TSRSW'04 at ISWC, IES'05 at
WWW, MTW'06 at WWW, SWPW'06 at ISWC) and is a guest editor of the special
issue of the Journal of Educational Technology and Society in April 2006.
Furthermore, he has served as a reviewer/pc member of several international
conferences and journals including for example ESWC'07, AAAI'07 and Journal
of Web Semantics.