How does hierarchical clustering work?

Related questions

1. What is the difference between hierarchical and nonhierarchical clustering methods?
2. How do I create a hierarchical cluster in R?
3. What is centroid linkage?
4. What are the applications of clustering?
5. Which are two types of hierarchical clustering?
6. Why K means unsupervised?
7. What measure how far the predictions are from the actual values in machine learning?
8. What is K nearest neighbor used for?
9. How does agglomerative clustering work?
10. What is the difference between K means and hierarchical clustering?

Tags

1. #works
2. #successively
3. #cluster
4. #clusters
5. #sequentially
6. #hierarchical
7. #above
8. #known
9. #typically
10. #observations
11. #shown
12. #splitting
13. #grouping
14. #initially
15. #merging
16. #theory
17. #clustering
18. #these
19. #similar
20. #divisive