Relevance ranking arranges search results so that the retrieved records that are most likely to be relevant to search requests display first.

Business users can use the Relevance Ranking Evaluator to test and experiment with relevance ranking strategies. It uses their own data and MDEX Engine to model how different strategies produce results. It can be used as a testing tool to aid application development, as well as a search tuning tool. The Relevance Ranking Evaluator also provides performance metrics for each query. These metrics help business users evaluate the tradeoffs associated with run-time performance and some of the more complex relevance ranking modules.