| 摘要 |
A method for filtering documents. The method comprises steps of (a) filtering the documents using a sensitivity and calculating the number of the documents blocked by the filtering, (b) receiving the number of documents mistakenly blocked by the filtering to calculate the error rate, (c) increasing (decreasing) the sensitivity by a displacement, (d) repeating steps (a) and (b) with the new sensitivity, (e) if the error rate reduces, going back to step (a) and keeping increasing (decreasing) the sensitivity; if the error rate is raised, going back to step (a) but decreasing (increasing) the sensitivity instead.
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