In this paper, we present an approach to build an ontology driven information retrieval system. This approach has been implemented on the HyperManyMedia platform, and is already being used by online students at WKU. The design of this work is based on the following steps: (1) using a knowledge-based framework that supports ontology modeling such as Protege, (2) constructing the E-learning domain ontology of the "HyperManyMedia" repository, (3) implementation using the Nutch search engine, (4) providing the learner with semantic term recommendation, and (5) visualizing the ontology as a directed graph. As of 2006, the "HyperManyMedia" search engine has been ranked number 24 on "The Ultimate Guide to Using Open Courseware," (between Cambridge University and Harvard Business), and followed by Princeton, Stanford, Yale, Johns Hopkins, and Boston College.
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