Nothing
#' @title Expectation-Maximization Clustering Learner
#'
#' @name mlr_learners_clust.em
#' @include LearnerClust.R
#' @include aaa.R
#'
#' @description
#' A [LearnerClust] for Expectation-Maximization clustering implemented in
#' [RWeka::list_Weka_interfaces()].
#' The predict method uses [RWeka::predict.Weka_clusterer()] to compute the
#' cluster memberships for new data.
#'
#' @templateVar id clust.em
#' @template learner
#' @template example
#'
#' @export
LearnerClustEM = R6Class("LearnerClustEM",
inherit = LearnerClust,
public = list(
#' @description
#' Creates a new instance of this [R6][R6::R6Class] class.
initialize = function() {
ps = ps(
I = p_int(default = 100L, lower = 1L, tags = "train"),
ll_cv = p_dbl(default = 1e-6, lower = 1e-6, tags = "train"),
ll_iter = p_dbl(default = 1e-6, lower = 1e-6, tags = "train"),
M = p_dbl(default = 1e-6, lower = 1e-6, tags = "train"),
max = p_int(default = -1L, lower = -1L, tags = "train"),
N = p_int(default = -1L, lower = -1L, tags = "train"),
num_slots = p_int(default = 1L, lower = 1L, tags = "train"),
S = p_int(default = 100L, lower = 0L, tags = "train"),
X = p_int(default = 10L, lower = 1L, tags = "train"),
K = p_int(default = 10L, lower = 1L, tags = "train"),
V = p_lgl(default = FALSE, tags = "train"),
output_debug_info = p_lgl(default = FALSE, tags = "train")
)
super$initialize(
id = "clust.em",
feature_types = c("logical", "integer", "numeric"),
predict_types = "partition",
param_set = ps,
properties = c("partitional", "exclusive", "complete"),
packages = "RWeka",
man = "mlr3cluster::mlr_learners_clust.em",
label = "Expectation-Maximization Clustering"
)
}
),
private = list(
.train = function(task) {
pv = self$param_set$get_values(tags = "train")
names(pv) = chartr("_", "-", names(pv))
ctrl = do.call(RWeka::Weka_control, pv)
m = invoke(RWeka::make_Weka_clusterer("weka/clusterers/EM"), x = task$data(), control = ctrl)
if (self$save_assignments) {
self$assignments = unname(m$class_ids + 1L)
}
return(m)
},
.predict = function(task) {
partition = predict(self$model, newdata = task$data(), type = "class") + 1L
PredictionClust$new(task = task, partition = partition)
}
)
)
learners[["clust.em"]] = LearnerClustEM
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.