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-rw-r--r--BNW_parameter_learning/checkStructure.m82
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diff --git a/BNW_parameter_learning/checkStructure.m b/BNW_parameter_learning/checkStructure.m
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-function [ labels, cases, dag, node_sizes, ord_flag ] = checkStructure(labels, cases, dag, node_sizes)

-    %checkStructure Check to see if nodes are sorted correctly.  Nodes must be

-    %   in topological order (i.e., parents before children) before parameter

-    %   learning can take place. This function performs this sorting.

-    %

-    %Input and output have the same meaning.  The output has just been

-    %topologically ordered.

-    %   labels = cell array with the names of the nodes.

-    %   cases = cell array with the data.

-    %   dag = matrix with the strucutre of the network.

-    %   node_sizes = vector with the size of each node.

-%

-%   checkStructure is called by readInput.m    

-

-

-

-%make connections array

-%count how big you need the connections array to be

-nnodes = size(dag,1);

-narcs = 0;

-for i = 1:nnodes

-    for j = 1:nnodes

-        if dag(i,j) == 1

-            narcs = narcs + 1;

-        end

-    end

-end

-%fill connections array with label names

-connections = cell(narcs,2);

-ncount = 0;

-for i = 1:nnodes

-    for j = 1:nnodes

-        if dag(i,j) == 1

-            ncount = ncount + 1;

-            connections{ncount,1} = labels{i};

-            connections{ncount,2} = labels{j};

-        end

-    end

-end

-

-%get topologically sorted dag and labels

-[new_dag, new_labels] = mk_adj_mat(connections, labels, 1);

-

-%check to see if order changed

-ord_flag = 0;

-for i = 1:nnodes

-    if ~strcmp(new_labels{i},labels{i})

-        ord_flag = 1;

-    end

-end

-

-if ord_flag

-    %get new ordering of nodes

-    order = cell(1,nnodes);

-    for i = 1:nnodes

-        for j = 1:nnodes

-            if strcmp(new_labels{j},labels{i})

-                order{i} = j;

-            end

-        end

-    end

-

-    %reorder cases and node_sizes

-    new_cases = cell(size(cases));

-    for i = 1:nnodes

-        new_cases(order{i},:) = cases(i,:);

-    end

-    new_node_sizes = zeros(1,nnodes);

-    for i = 1:nnodes

-        new_node_sizes(order{i}) = node_sizes(i);

-    end

-

-

-    dag = new_dag;

-    cases = new_cases;

-    node_sizes = new_node_sizes;

-    labels = new_labels;    

-end

-

-end

-%end checkStructure.m

-