document: OntoTrix : a hybrid visualization for populated ontologies Most Semantic Web data visualization tools structure the representation according to the concept definitions and interrelations that constitute the ontology 's vocabulary . Instances are often treated as somewhat peripheral information , when considered at all . These instances , that populate ontologies , represent an essential part of any knowledge base , and are often orders of magnitude more numerous than the concept definitions that give them machine-processable meaning . We present a visualization technique designed to enable users to visualize large instance sets and the relations that connect them . This hybrid visualization uses both node-link and adjacency matrix representations of graphs to visualize different parts of the data depending on their semantic and local structural properties , exploiting ontological knowledge to drive the graph layout . The representation is embedded in an environment that features advanced interaction techniques for easy navigation , including support for smooth continuous zooming and coordinated views .
doc_bio_tags: O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O