Evaluating Clusters
Learn how to evaluate the performance of clustering algorithms.
We'll cover the following...
Chapter Goals:
- Learn how to evaluate clustering algorithms
A. Evaluation metrics
When we don't have access to any true cluster assignments (labels), the best we can do to evaluate clusters is to just take a look at them and see if they make sense with respect to the dataset and domain. However, if we do have access to the true cluster labels for the data observations, we can apply a number of metrics to evaluate our clustering algorithm.
One popular evaluation metric is the ...