*[2.3.6.1\. Different linkage type: Ward, complete and average linkage](modules/clustering.html#different-linkage-type-ward-complete-and-average-linkage)
*[2.3.6.2\. 添加连接约束](modules/clustering.html#id12)
*[2.3.6.3\. Varying the metric](modules/clustering.html#varying-the-metric)