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function bnet = mutilate_bnet(bnet, nodes, vals)
% MUTILATE_BNET Clamp nodes to specific values (perform a surgical intervention)
% bnet = mutilate_bnet(bnet, nodes, vals)
%
% We make all the clamped nodes roots.
ns = bnet.node_sizes;
for i=1:length(nodes)
X = nodes(i);
x = vals(i);
bnet.dag(:,X) = 0;
bnet.CPD{X} = root_CPD(bnet, X, x);
end
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