OHPL: proto – R documentation

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proto

Extract the Prototype from Each Variable Group

This function extracts the prototype from each variable group.

proto(X, y, groups, type = c("max", "median"), mu = NULL)

`X`	Predictor matrix
`y`	Response matrix with one column
`groups`	An group index vector containing the group number each variable belongs to. For example: `c(1, 1, 1, 1, 1, 2, 2, 2, ...)`. Variable groups can be generated by the Fisher optimal partition algorithm implemented in `FOP`.
`type`	The rule for extracting the prototype. Possible options are `"max"` and `"median"`.
`mu`	The mean value of `y` for standarization. Default is `NULL`, which uses the sample mean of `y`.

The prototypes (variable index) extracted from each group (cluster).

Ordered Homogeneity Pursuit Lasso for Group Variable Selection

v1.4

GPL-3 | file LICENSE

Authors

You-Wu Lin [aut], Nan Xiao [cre] (<https://orcid.org/0000-0002-0250-5673>)

Initial release