How many clusters?

Cluster Analysis in Python

Shaumik Daityari

Business Analyst

Introduction to dendrograms

Strategy till now - decide clusters on visual inspection
Dendrograms help in showing progressions as clusters are merged
A dendrogram is a branching diagram that demonstrates how each cluster is composed by branching out into its child nodes

from scipy.cluster.hierarchy import dendrogram

Z = linkage(df[['x_whiten', 'y_whiten']], 
            method='ward',
            metric='euclidean')

dn = dendrogram(Z)
plt.show()

Cluster Analysis in Python