top
A numeric scalar or character vector. A numeric scalar indicates
the number of top features that should undergo feature selection. A character vector
indicates specifically which features by name should undergo feature selection.
Set top = 0
to include all features. A numeric vector can also be used
to indicate specific features by location, similar to a character vector.
how
A character string. The name of the function used to cluster.
Select from "hclust", "kmeans", "agnes", "clara", "diana", "fanny", or
"pam".