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#
# D2MCS provides a novel framework to able to automatically develop and deploy
# an accurate Multiple Classifier System (MCS) based on the feature-clustering
# distribution achieved from an input dataset. D2MCS was developed focused on
# four main aspects: (i) the ability to determine an effective method to
# evaluate the independence of features, (ii) the identification of the optimal
# number of feature clusters, (iii) the training and tuning of ML models and
# (iv) the execution of voting schemes to combine the outputs of each classifier
# comprising the MCS.
#
# Copyright (C) 2021 Sing Group (University of Vigo)
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <https://www.gnu.org/licenses/gpl-3.0.html>
#' @title Encapsulates the achieved predictions.
#'
#' @description The class used to encapsulates all the computed predictions to
#' facilitate their access and maintenance.
#'
#' @seealso \code{\link{D2MCS}}
#'
#' @keywords math misc
#'
#' @import R6
#'
#' @export PredictionOutput
PredictionOutput <- R6::R6Class(
classname = "PredictionOutput",
portable = TRUE,
public = list(
#'
#' @description Method for initializing the object arguments during runtime.
#'
#' @param predictions A \link{list} of \code{\link{FinalPred}}
#' elements.
#' @param type A \link{character} to define which type of predictions
#' should be returned. If not defined all type of probabilities will be
#' returned. Conversely if "prob" or "raw" is defined then computed
#' 'probabilistic' or 'class' values are returned.
#' @param target A \link{character} defining the value of the
#' positive class.
#'
initialize = function(predictions, type, target) {
private$predictions <- predictions
private$type <- type
private$target <- target
},
#'
#' @description The function returns the final predictions.
#'
#' @return A \link{list} containing the final predictions or \link{NULL} if
#' classification stage was not successfully performed.
#'
getPredictions = function() { private$predictions },
#'
#' @description The function returns the type of prediction should be
#' returned. If "prob" or "raw" is defined then computed 'probabilistic' or
#' 'class' values are returned.
#'
#' @return A \link{character} value.
#'
getType = function() { private$type },
#'
#' @description The function returns the value of the target class.
#'
#' @return A \link{character} value.
#'
getTarget = function() { private$target }
),
private = list(
predictions = NULL,
type = NULL,
target = NULL
)
)
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