How does agglomerative clustering work?

Related questions

1. What is clustering and its types?
2. How do I create a hierarchical cluster in R?
3. Why is K means clustering used?
4. What is the difference between hierarchical and nonhierarchical clustering methods?
5. What is the difference between K means and hierarchical clustering?
6. Does K mean supervised?
7. How does hierarchical clustering work?
8. What is K nearest neighbor used for?
9. What measure how far the predictions are from the actual values in machine learning?
10. What are the advantages and disadvantages of K means clustering?

Tags

1. #hierarchy
2. #divisive
3. #recursively
4. #splits
5. #agglomerative
6. #start
7. #bottom
8. #observations
9. #moves
10. #observation
11. #clusters
12. #approach
13. #performed
14. #cluster
15. #pairs
16. #merged
17. #starts