RWTH Aachen University
The term data exploration refers to the process by which the user is able to visualize, browse and query the data. Data visualization involves selecting, transforming and representing abstract data in a form that facilitates human interaction and understanding. This paper presents an abstract data model for visualizing RDF (Resource Description Framework) data based on the notion of nested graphs. The authors' study gives theoretical results that show directions to enhance the representation and visualization of RDF data.