Clustering

Clustering is an unsupervised learning technique. It is used for grouping data points, or objects that are somehow similar.

Types pof clustering

Some divide clustering into two subgroups:

• Hard clustering: Each data point either belongs to a cluster completely or not.
• Soft clustering: A probability or likelihood is assigned for putting data points into separate clusters.

Algorithms

Some of the commonly used clustering algorithms are:

• K-means:
• Expectation maximization:
• Hierarchical cluster analysis (HCA):

References

• [1]
• [2]
• [3]