private void reset() {
        this.uniqA = new TokenCountPriorityQueue(topN);
        this.uniqB = new TokenCountPriorityQueue(topN);
        this.moreA = new TokenCountDiffQueue(topN);
        this.moreB = new TokenCountDiffQueue(topN);
        diceCoefficientNum = 0;
        overlapNum = 0;
        diceCoefficient = 0.0d;
        overlap = 0.0;

    }
Computes some corpus contrast statistics.
<p>
Not thread safe.
tika-eval/tika-eval-core/src/main/java/org/apache/tika/eval/core/tokens/TokenContraster.java