Jaccard is not cited in the paper, and it seems likely that the authors were not aware of it.
杰卡德在论文中没有提到，并且似乎作者并没有意识到这一点。
2
If each sample is modelled instead as a set of attributes, this value is equal to the Jaccard Coefficient of the two sets.
如果每一个样本以属性集合的方式建模，这个值等同于两个集合的杰卡德系数。
3
According to the Jaccard similarity coefficient, the composition of the ant species all has distinct difference between primeval and secondary forests of the 4 vegetation subtypes.