HDBSCAN Python选择群集数 [英] HDBSCAN Python choose number of clusters

问题描述

是否可以在python的HDBSCAN算法中选择簇数?还是唯一的方法就是使用输入参数(例如alpha，min_cluster_size)?

Is is possible to select the number of clusters in the HDBSCAN algorithm in python? Or the only way is to play around with the input parameters such as alpha, min_cluster_size?

谢谢

更新: 这是使用fcluster和hdbscan的代码

UPDATE: here is the code to use fcluster and hdbscan

import hdbscan
from scipy.cluster.hierarchy import fcluster

clusterer = hdbscan.HDBSCAN()
clusterer.fit(X)
Z = clusterer.single_linkage_tree_.to_numpy()
labels = fcluster(Z, 2, criterion='maxclust')

推荐答案

如果您明确需要获取固定数量的集群，则最接近管理的事情是使用集群层次结构并在层次结构中进行平截在为您提供所需数量的群集的级别上.确实需要使用HDBSCAN暴露的树对象之一并使您的手变脏，但这是可以做到的.

If you explicitly need to get a fixed number of clusters then the closest thing to managing that would be to use the cluster hierarchy and perform a flat cut through the hierarchy at the level that gives you the desired number of clusters. That does involve working with one of the tree objects that HDBSCAN exposes and getting your hands a little dirty, but it can be done.

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