“Jaccard index”的概念、定义、翻译、参考文献-科学参考

单词	Jaccard index
释义	Jaccard index Encyclopedia 理学文献计量释 Jaccard index雅克俾指数用于比较有限样本集之间的相似性与差异性。其数值越大，样本相似度越高。又称杰卡德系数、杰卡德相似系数。
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