Prerequisites: Hierarchical Clustering
The process of Hierarchical Clustering involves either clustering sub-clusters(data points in the first iteration) into larger clusters in a bottom-up manner or dividing a larger cluster into smaller sub-clusters in a top-down manner. During both the types of hierarchical clustering, the distance between two sub-clusters needs to be computed. The different types of linkages describe the different approaches to measure the distance between two sub-clusters of data points. The different types of linkages are:-
1. Single Linkage: For two clusters R and S, the single linkage returns the minimum distance between two points i and j such that i belongs to R and j belongs to S.
2. Complete Linkage: For two clusters R and S, the single linkage returns the maximum distance between two points i and j such that i belongs to R and j belongs to S.
3. Average Linkage: For two clusters R and S, first for the distance between any data-point i in R and any data-point j in S and then the arithmetic mean of these distances are calculated. Average Linkage returns this value of the arithmetic mean.
– Number of data-points in R
– Number of data-points in S
- Different Types of Clustering Algorithm
- Difference between CURE Clustering and DBSCAN Clustering
- ML | Hierarchical clustering (Agglomerative and Divisive clustering)
- DBSCAN Clustering in ML | Density based clustering
- ML | Mean-Shift Clustering
- ML | Spectral Clustering
- ML | Classification vs Clustering
- ML | K-Medoids clustering with example
- ML | Fuzzy Clustering
- Criterion Function Of Clustering
- Clustering in Machine Learning
- ML | OPTICS Clustering Explanation
- K means Clustering - Introduction
- ML | Unsupervised Face Clustering Pipeline
- Implementing Agglomerative Clustering using Sklearn
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to email@example.com. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.