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###########################################################################
# Copyright 2009 Michael Schweinberger #
# #
# This file is part of hergm. #
# #
# hergm 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. #
# #
# hergm 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 hergm. If not, see <http://www.gnu.org/licenses/>. #
# #
###########################################################################
hergm.relabel_1 <- function(max_number, indicator, number_runs, verbose=1)
# Relabeling algorithm, which aims to minimize posterior expected loss
# input: number of categories, indicators, number of runs
# output: minimum and minimizer of posterior expected loss
{
loss <- vector(length = number_runs)
minimum_loss <- Inf
for (i in 1:number_runs)
{
if ((verbose >= 0) && (number_runs > 1)) cat("\n------\nRun ", i, "\n------\n", sep="")
output <- hergm.min_loss_1(max_number, indicator, 25, verbose) # Loss function of Schweinberger and Handcock (2015)
loss[i] <- output$loss
if (output$loss < minimum_loss)
{
minimum_loss <- output$loss
min_output <- output
}
}
if ((verbose >= 0) && (number_runs > 1)) cat("\n", "Minimum loss: ", min_output$loss, "\n", sep="")
min_output
}
hergm.relabel_2 <- function(max_number, indicator, verbose)
# Relabeling algorithm, which aims to minimize posterior expected loss
# input: number of categories, indicators
# output: minimum and minimizer of posterior expected loss
{
min_output <- hergm.min_loss_2(max_number, indicator, verbose) # Loss function of Peng and Carvalho (2015); note: the algorithm converges to the same minimum in each run, therefore multiple runs are not necessary
min_output
}
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