A method of searching for information includes receiving a query, providing the query to a first search engine that searches a set of data sources, the data sources having relationships to an ontology, receiving search results from the search engine, analyzing the search results to determine at least one statistic corresponding to the search results and the query, wherein the statistic is based upon a relevance score that is calculated based upon a first weighting function related to a concept, a second weighting function related to a data source item, a set of items related to the concept, and a set of items related to the search results, and providing at least one concept to a user, wherein said at least one concept correspond to said at least one statistic.