Selected results of a comparative study of four ontology visualization methods for information retrieval tasks

The need for effective ontology visualization for design, management and browsing has arisen as a result of the progress in the areas of semantic Web and personal information management. There are several ontology visualizations available through existing ontology management tools, but not as many evaluations to determine their advantages and disadvantages and their suitability for various ontologies and user groups. This work presents selected results of an evaluation of four visualization methods in Protege.