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The Jaccard similarity index

Indicate the range

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When calculating the Jaccard similarity index, we divide the intersection of its objects by its union. According to the formula, the Jaccard index can produce results within a certain range. What is that range?

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-1\leq J(A,B)\leq 1

1< J(A,B)<2

0< J(A,B)< 1

0\leq J(A,B)\leq 1

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