The Adjusted Rand Index is a measure of similarity between a clustering and some ground-truth that is adjusted for chance. It considers all pairs of samples that are assigned in the same or different clusters in the predicted and empirical clusterings.
Estimator Compatibility: Regressor
Output Range: -1 to 1
This metric does not have any parameters.
use Rubix\ML\CrossValidation\Metrics\RandIndex; $metric = new RandIndex();
- W. M. Rand. (1971). Objective Criteria for the Evaluation of Clustering Methods.