Evaluation of negation and uncertainty detection and its impact on precision and recall in search.

Google Desktop generally achieved higher recall than RadReportMiner; the difference was marginally significant per-document ( p = 0.0057) but not statistically significant on a mean basis per-term ( p = 0.273); for two individual terms, the differences were statistically significant.

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Given the high precision of RadReportMiner, it is not surprising that it had a lower recall than Google Desktop, though the difference was only marginally statistically significant.

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