Fig. 3.

Performance of ACTION Similarity Metric. Various extrinsic measures of clustering quality for different cell similarity scores. a Adjusted Rand Index (ARI), b F-score, and c Normalized Mutual Information (NMI). All of these measures are upper-bounded by one with larger values indicating better results. The results in the table are the mean value over 100 individual runs of kernel k-means clustering with different initializations. The ACTION metric has no tunable parameters. For the other methods, we tested a range of parameters and report the best results. For each dataset, the corresponding row has been color-coded such that the darker green indicates better performance. Except for the Brain dataset, ACTION is either the best, or jointly the best. For Brain, the SIMLR metric is slightly better in an aggregation over all three measures