The following image is a tree map rendering of a domain model for neuroscience with focus on cognition and brain chemistry. Inclusion indicates the subClassOf relationship and the size of the boxes indicates the number of instances of the category.
The OWL file that contains this model can be downloaded here
after the fact extraction step, the model has added named relationships. The following image shows one strongly connected component of the model. The category hierarchy has been hidden for better visibility
The OWL file that contains this connected model can be downloaded here
Christopher Thomas, Pankaj Mehra, Roger Brooks and Amit Sheth, Growing Fields of Interest - Using an Expand and Reduce Strategy for Domain Model Extraction, in the Proceedings of the 2008 IEEE/WIC International Conference on Web Intelligence, 2008
Christopher Thomas, Pankaj Mehra, Wenbo Wang, Amit Sheth, Gerhard Weikum and Victor Chan, Automatic Domain Model Creation Using Pattern-Based Fact Extraction, Knoesis Center technical report.