Path location — Creates all ancestors on the navigation path to a target element if they don't exist and returns the target element for a modifiable tree.
路径位置——如果不存在，则创建指向目标元素的导航路径上的所有祖先元素，并返回可修改树的目标元素。
Second, general suffix tree algorithm is used to mine the key path from user's all navigation paths, and using key path to cluster all users into different interest groups.
其次，提出从导航路径中利用构造复合后缀树的方法来挖掘用户关键路径，并利用关键路径将用户聚类成不同的兴趣群。
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