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# Copyright (C) 2012 - 2021 Reza Mohammadi |
# |
# This file is part of BDgraph package. |
# |
# BDgraph 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; see <https://cran.r-project.org/web/licenses/GPL-3>.|
# |
# Maintainer: Reza Mohammadi <a.mohammadi@uva.nl> |
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# Computing the probability of all possible graphs or one specific graph |
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pgraph = function( bdgraph.obj, number.g = 4, adj = NULL )
{
if( !is.null( bdgraph.obj $ p_links ) ) stop( "It needs object of 'bdgraph' with option 'save = TRUE'" )
sample_graphs = bdgraph.obj $ sample_graphs
graph_weights = bdgraph.obj $ graph_weights
sort_gWeights = sort( graph_weights, decreasing = TRUE )
if( is.null( adj ) )
{
p <- nrow( bdgraph.obj $ last_graph )
list_g <- list()
vec_g <- c( rep( 0, p * ( p - 1 ) / 2 ) )
for ( i in 1 : number.g )
{
vec_g <- 0 * vec_g
indG_i = sample_graphs[ which( graph_weights == sort_gWeights[ i ] ) ]
vec_g[ which( unlist( strsplit( as.character( indG_i ), "" ) ) == 1 ) ] <- 1
list_g[[i]] <- matrix( 0, p, p )
list_g[[i]][ upper.tri( list_g[[i]] ) ] <- vec_g
#list_g[[i]] <- Matrix::Matrix( list_g[[i]], sparse = TRUE )
}
return( list( selected_g = list_g, prob_g = sort_gWeights[ 1 : number.g ] / sum( graph_weights ) ) )
}else{
if ( inherits( adj, "sim" ) ) G <- as.matrix( adj $ G )
if ( inherits( adj, "graph" ) ) G <- unclass( adj )
indG = paste( G[ upper.tri( G ) ], collapse = '' )
wh = which( sample_graphs == indG )
prob_g = ifelse( length( wh ) == 0, 0, graph_weights[ wh ] / sum( graph_weights ) )
return( prob_g )
}
}
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