keynote:lesson04
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| ===== 4.1.2 几种聚类方法 ===== | ===== 4.1.2 几种聚类方法 ===== | ||
| - | ==== 1.层次（从顶到下）聚类 ==== | + | ==== 1.层次（自底向上）聚类 ==== |
| * **__思想__：** 顺序地将最近的两个点/类合并； | * **__思想__：** 顺序地将最近的两个点/类合并； | ||
| * **__具体过程__** | * **__具体过程__** | ||
| Line 47: | Line 47: | ||
| - 若两点间无边，则其权值为0； | - 若两点间无边，则其权值为0； | ||
| - 变换成概率矩阵 {{:keynote:24.jpg|}}； | - 变换成概率矩阵 {{:keynote:24.jpg|}}； | ||
| - | * **__随机流动的性质__** | + | * **__随机漫步的性质__** |
| * {{:keynote:26.jpg|}} | * {{:keynote:26.jpg|}} | ||
| * 随着t的增大，t步后数据点的分布渐趋相似。若图为连通的，则最终的结果与初始点的选取无关。 | * 随着t的增大，t步后数据点的分布渐趋相似。若图为连通的，则最终的结果与初始点的选取无关。 | ||
keynote/lesson04.1277552050.txt.gz · Last modified: 2023/08/19 21:01 (external edit)
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