像是关键词共现那样的对称矩阵，如何做聚类呢？具体算法是如何的呢？
| 功能18 | 价格16 | 节能17 | 变频13 | 销售11 | 家电下乡11 | 保鲜11 | 变温10 | 卡萨帝10 | 高端11 | 售后服务9 | 外形设计8 | 抽屉式设计5 | 多门5 | 能效8 | 型号8 | 市场占有率7 | 低碳环保8 | 白色家电7 | 静音低噪声6 | 营销7 | |
| 功能18 | 1 | 8 | 10 | 1 | 1 | 11 | 10 | 5 | 4 | 2 | 1 | 2 | 1 | 2 | 5 | 2 | 1 | 2 | 6 | 1 | |
| 价格16 | 1 | 3 | 4 | 1 | 3 | 4 | 4 | 1 | 0 | 1 | 2 | 2 | 1 | 1 | 5 | 1 | 3 | 2 | 2 | 1 | |
| 节能17 | 8 | 3 | 9 | 3 | 4 | 6 | 5 | 2 | 1 | 0 | 0 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 2 | 1 | |
| 变频13 | 10 | 4 | 9 | 0 | 1 | 8 | 8 | 2 | 1 | 0 | 1 | 1 | 1 | 2 | 3 | 2 | 3 | 4 | 6 | 0 | |
| 销售11 | 1 | 1 | 3 | 0 | 4 | 1 | 1 | 3 | 4 | 3 | 2 | 1 | 2 | 1 | 0 | 2 | 3 | 2 | 1 | 3 | |
| 家电下乡11 | 1 | 3 | 4 | 1 | 4 | 0 | 1 | 0 | 0 | 4 | 0 | 0 | 0 | 1 | 0 | 5 | 0 | 0 | 0 | 5 | |
| 保鲜11 | 11 | 4 | 6 | 8 | 1 | 0 | 9 | 2 | 1 | 0 | 2 | 1 | 1 | 1 | 4 | 2 | 2 | 2 | 6 | 0 | |
| 变温10 | 10 | 4 | 5 | 8 | 1 | 1 | 9 | 1 | 1 | 0 | 2 | 1 | 0 | 0 | 4 | 1 | 1 | 1 | 6 | 0 | |
| 卡萨帝10 | 5 | 1 | 2 | 2 | 3 | 0 | 2 | 1 | 9 | 0 | 2 | 3 | 4 | 0 | 0 | 2 | 3 | 2 | 1 | 0 | |
| 高端11 | 4 | 0 | 1 | 1 | 4 | 0 | 1 | 1 | 9 | 0 | 2 | 2 | 3 | 1 | 0 | 1 | 2 | 1 | 1 | 0 | |
| 售后服务9 | 2 | 1 | 0 | 0 | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0 | 0 | 5 | |
| 外形设计8 | 1 | 2 | 0 | 1 | 2 | 0 | 2 | 2 | 2 | 2 | 0 | 5 | 5 | 1 | 2 | 1 | 2 | 1 | 1 | 0 | |
| 抽屉式设计5 | 2 | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 3 | 2 | 0 | 5 | 3 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | |
| 多门5 | 1 | 1 | 1 | 1 | 2 | 0 | 1 | 0 | 4 | 3 | 0 | 5 | 3 | 1 | 0 | 1 | 2 | 1 | 0 | 0 | |
| 能效8 | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 0 | 1 | |
| 型号8 | 5 | 5 | 3 | 3 | 0 | 0 | 4 | 4 | 0 | 0 | 0 | 2 | 1 | 0 | 1 | 0 | 0 | 1 | 2 | 0 | |
| 市场占有率7 | 2 | 1 | 3 | 2 | 2 | 5 | 2 | 1 | 2 | 1 | 3 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 3 | |
| 低碳环保8 | 1 | 3 | 3 | 3 | 3 | 0 | 2 | 1 | 3 | 2 | 0 | 2 | 2 | 2 | 2 | 0 | 1 | 5 | 1 | 0 | |
| 白色家电7 | 2 | 2 | 3 | 4 | 2 | 0 | 2 | 1 | 2 | 1 | 0 | 1 | 1 | 1 | 2 | 1 | 1 | 5 | 0 | 0 | |
| 静音低噪声6 | 6 | 2 | 2 | 6 | 1 | 0 | 6 | 6 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 2 | 1 | 1 | 0 | 0 | |
| 营销7 | 1 | 1 | 1 | 0 | 3 | 5 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0 | 0 |
聚类算法是通用的，你可以把词语共现矩阵转换为相异度矩阵（Dissimilarity Matrix），各种常见的聚类算法都可以使用