None of the keyword searches achieved higher recall than TAR when the amount of review effort was equal. All six of the biology queries were submitted by one person. The first query was evaluated in front of the audience, and his first revision to the query did help, but subsequent (blind) revisions of the query tended to hurt more than they helped. For biology, review of 3,000 documents with TAR gave better recall than review of 6,000 documents with any of the queries. There was only a single query submitted for the medical industry, and it underperformed TAR substantially. Five people submitted a total of eight queries for the law category, and the audience had the best results for that topic, which isn’t surprising since an audience full of lawyers and litigation support people would be expected to be especially good at identifying keywords related to the law. Even the best queries had lower recall with review of 6,000 documents than TAR 3.0 CAL achieved with review of only 3,000 documents, but a few of the queries did achieve higher recall than TAR 3.0 SAL when twice as much document review was performed with the search query compared to TAR 3.0 SAL.
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