number_of_clusters

er_evaluation.summary.number_of_clusters(membership)

Number of clusters in a given clustering.

Parameters:

membership (Series) – Membership vector representation of a clustering.

Returns:

number of unique cluster identifiers. Note that NAs are not counted.

Return type:

int

Examples

>>> membership = pd.Series(index=[1,2,3,4,5,6,7,8], data=[1,1,2,3,2,4,4,4])
>>> number_of_clusters(membership)
4