The Text Retrieval Conference (TREC)
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TL;DR
The main concern, in terms of performance evaluation, is the overall system throughput and the individual query performance.
Abstract
We have already described many different search and retrieval approaches, most of which primarily focused on improving the accuracy of the information retrieval engines. Unlike other search and retrieval domains, e.g., traditional relational databases, the accuracy of retrieval is not constant. That is, in the traditional relational database domain all techniques result in perfect accuracy. Hence, the main concern, in terms of performance evaluation, is the overall system throughput and the individual query performance.