ckmeansThreshold        Clustered thresholding of a vector.
pbmc.rna.mat            Single cell RNA-sequencing (scRNA-seq)
                        peripheral blood (PBMC) data sample.
randomizedRRR           Reduced rank reconstruction (RRR) of a matrix.
speck                   Abundance estimation for single cell
                        RNA-sequencing (scRNA-seq) data.
