AWS Certified Machine Learning Study Guide by Shreyas Subramanian & Stefan Natu

AWS Certified Machine Learning Study Guide by Shreyas Subramanian & Stefan Natu

Author:Shreyas Subramanian & Stefan Natu [Subramanian, Shreyas & Natu, Stefan]
Language: eng
Format: epub
ISBN: 9781119821014
Publisher: Wiley
Published: 2021-12-14T00:00:00+00:00


Although in some cases you may have prior business knowledge about the number of clusters, in many problems, that is not usually the case. So, you need to determine the best number of clusters or groups in your data.

A common technique for optimizing for the number of clusters is to use an elbow method. The elbow method plots the percentage of variance that is explained as a function of the number of clusters. One way to measure this is to look at the ratio of the mean or minimum value of the separation between clusters divided by the max separation within a cluster:



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