更改

* '''Agglomerative''': This is a "[[Top-down and bottom-up design|bottom-up]]" approach: each observation starts in its own cluster, and pairs of clusters are merged as one moves up the hierarchy.

* '''Agglomerative''': This is a "[[Top-down and bottom-up design|bottom-up]]" approach: each observation starts in its own cluster, and pairs of clusters are merged as one moves up the hierarchy.

补充翻译：合并：这是一种“自上而下又自下而上/纵向”的方法：每个被观察数据从自己的簇类中开始，当一个观察组数据向上层移动时，成对的簇类集群被合并。

补充翻译：凝聚：这是一种“自上而下又自下而上/纵向”的方法：每个被观察数据从自己的簇类中开始，当一个观察组数据向上层移动时，成对的簇类集群被合并。

* '''Divisive''': This is a "[[Top-down and bottom-up design|top-down]]" approach: all observations start in one cluster, and splits are performed recursively as one moves down the hierarchy.

* '''Divisive''': This is a "[[Top-down and bottom-up design|top-down]]" approach: all observations start in one cluster, and splits are performed recursively as one moves down the hierarchy.