2004 search results - page 23 / 401 » Understanding Ontological Levels |
CSE
2009
IEEE
14 years 3 months ago
2009
IEEE
Abstract—Vocabulary alignment is a main challenge in distributed access control as peers should understand each other’s policies unambiguously. Ontologies enable mutual underst...
VL
2009
IEEE
14 years 3 months ago
2009
IEEE
Understanding and maintaining the structure of large ontologies is a cognitively demanding task. Visualizations are commonly used as a cognitive aid for presenting large ontologie...
ECTEL
2006
Springer
14 years 6 days ago
2006
Springer
Abstract. This paper investigates the use of ontologies in processes of collaborative learning and knowledge generation. The creation and use of ontologies is analysed from an acti...
IBIS
2006
13 years 8 months ago
2006
In order to deal with the need of sharing learning objects within and across learning object repositories most of the recent work argue for the use of ontologies as a means for pro...
SCIE
1997
Springer
14 years 20 days ago
1997
Springer
Abstract. The task of information extraction can be seen as a problem of semantic matching between a user-defined template and a piece of information written in natural language. T...