depth first短语¹⁴⁴⁹⁷²⁺² 基本例句 深度优先 Finally, reconstruct structured directory with a tree rebuilding algorithm. This algorithm adopts a depth first strategy using the sequential information and the cluster information. 基于该模型，使用了一种基于规范化分割的谱聚类算法对目录项进行聚类，从而获得目录项的聚类信息。 fabiao