Cost of HAC  Hierarchical Clustering can be costly to implement: – Initially, there are  (n 2 ) inter-cluster distances to compute. – Each merge req
{"Image DocumentName": "Cost of HAC Hierarchical Clustering can be costly to implement:", "Image ImageDescription": "Initially, there are Q(n2) inter-cluster distances to compute. Each merge requires a new computation of distances involving the merged clusters. Gives a cost of O(n3) for single-link and complete-link. Average link can cost as much as O(n4) time. This limits scalability: with only few hundred thousand points, the clustering could take days or months. Need clustering methods that take time closer to O(n) to allow processing of large data sets.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}