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-rw-r--r--sourcecodes/bnt-master/KPMtools/marg_table.m27
1 files changed, 27 insertions, 0 deletions
diff --git a/sourcecodes/bnt-master/KPMtools/marg_table.m b/sourcecodes/bnt-master/KPMtools/marg_table.m
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+++ b/sourcecodes/bnt-master/KPMtools/marg_table.m
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+function smallT = marg_table(bigT, bigdom, bigsz, onto, maximize)
+% MARG_TABLE Marginalize a table
+% smallT = marg_table(bigT, bigdom, bigsz, onto, maximize)
+
+if nargin < 5, maximize = 0; end
+
+
+smallT = myreshape(bigT, bigsz); % make sure it is a multi-dim array
+sum_over = mysetdiff(bigdom, onto);
+ndx = find_equiv_posns(sum_over, bigdom);
+if maximize
+  for i=1:length(ndx)
+    smallT = max(smallT, [], ndx(i));
+  end
+else
+  for i=1:length(ndx)
+    smallT = sum(smallT, ndx(i));
+  end
+end
+
+
+ns = zeros(1, max(bigdom));
+%ns(bigdom) = mysize(bigT); % ignores trailing dimensions of size 1
+ns(bigdom) = bigsz;
+
+smallT = squeeze(smallT); % remove all dimensions of size 1
+smallT = myreshape(smallT, ns(onto)); % put back relevant dims of size 1