将以下代码改为求取Jaccard系数的代码：def dicex y intersect = npsumnpsumnpsumx y y_sum = npsumnpsumnpsumy if y_sum == 0 return 00 x_sum = npsumnpsumnpsumx return 2 intersect x_sum + y_sum

def jaccard(x, y): intersect = np.sum(np.sum(np.sum(x * y))) union = np.sum(np.sum(np.sum(x + y))) if union == 0: return 0.0 return intersect / union

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