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非度量多维排列 NMDS (Non-metric multidimensional scaling)分析
网页2023年3月9日 · 非度量多维排列 (NMDS)是基于相异矩阵或距离矩阵进行排序分析的间接梯度分析方法。 NMDS 的目标与 PCA 或 PCoA 类似 (一文读懂PCA分析 （原理、算法、解释和可视化）; 一文学会PCA/PCoA相关统计检验 (PERMANOVA)和可视化)，都是希望能在低维空间尽可能准确地展示样品在高维空间的关系。 在低维空间，两个样品点距离越近，其相似度越高。 NMDS的主要目的是识别和解释样品的分布模式，反应样品之间的顺序关系， …
NMDS – Applied Multivariate Statistics in R
网页Non-metric MultiDimensional Scaling (NMDS) is a distance-based ordination technique. Because it focuses on the distance matrix, it is very flexible – any distance measure can be used. As usual, the data matrix (n sample units × p species) is converted into an n x n distance matrix (or, more generally, a dissimilarity matrix).
The New Adidas NMDs Are More Than Just a Pair of Red Sneakers
网页2016年8月2日 · It came first to the UltraBoost, one of Adidas' most popular running sneakers. But now the program is poised to expand. In just a few weeks Adidas will introduce the wildly popular NMD runner in ...
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