Suppose we have four data points: A, B, C, and D.
Apply agglomerative hierarchical clustering using single-linkage (minimum distance) to cluster these 4 data points. Show the dendrograms.
If we want to have 3 clusters, what are the final three clusters?
The distance matrix based on the Euclidean distance is given below:
A 0
B 1 0
C 4 2 0
D 5 6 3 0