1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
function smallT = marg_tableM(bigT, bigdom, bigsz, onto, maximize)
% MARG_TABLE Marginalize a table
% smallT = marg_table(bigT, bigdom, bigsz, onto, maximize)
% marg_tableM is the same as marg_table.m, but we are sure
% it is not marg_table.c
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
|