Mercurial > hg > camir-aes2014
view toolboxes/FullBNT-1.0.7/bnt/potentials/@upot/upot_to_opt_policy.m @ 0:e9a9cd732c1e tip
first hg version after svn
author | wolffd |
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date | Tue, 10 Feb 2015 15:05:51 +0000 |
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function [policy, EU] = upot_to_opt_policy(pot) % UPOT_TO_OPT_POLICY Compute an optimal deterministic policy given a utility potential % [policy, EU] = upot_to_opt_policy(pot) % % policy(a,b, ..., z) = P(do z | a, b, ..), which will be a delta function % EU is the contraction of this potential, i.e., P .* U sz = pot.sizes; % mysize(pot.p); if isempty(sz) EU = pot.u; policy = []; return; end parent_size = prod(sz(1:end-1)); self_size = sz(end); C = pot.p .* pot.u; % contraction C = reshape(C, parent_size, self_size); policy = zeros(parent_size, self_size); for i=1:parent_size act = argmax(C(i,:)); policy(i, act) = 1; end policy = myreshape(policy, sz); EU = sum(C(:));