diff options
Diffstat (limited to 'sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private')
4 files changed, 29 insertions, 0 deletions
diff --git a/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/CVS/Entries b/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/CVS/Entries new file mode 100644 index 00000000..b56c53ed --- /dev/null +++ b/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/CVS/Entries @@ -0,0 +1,2 @@ +/sum_prod_CPD_and_pi_msgs.m/1.1.1.1/Wed May 29 15:59:54 2002// +D diff --git a/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/CVS/Repository b/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/CVS/Repository new file mode 100644 index 00000000..716dfddd --- /dev/null +++ b/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/CVS/Repository @@ -0,0 +1 @@ +FullBNT/BNT/CPDs/@noisyor_CPD/private diff --git a/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/CVS/Root b/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/CVS/Root new file mode 100644 index 00000000..f3bd14a6 --- /dev/null +++ b/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/CVS/Root @@ -0,0 +1 @@ +:ext:nsaunier@bnt.cvs.sourceforge.net:/cvsroot/bnt diff --git a/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/sum_prod_CPD_and_pi_msgs.m b/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/sum_prod_CPD_and_pi_msgs.m new file mode 100644 index 00000000..9ca31d3c --- /dev/null +++ b/sourcecodes/bnt-master/BNT/CPDs/@noisyor_CPD/private/sum_prod_CPD_and_pi_msgs.m @@ -0,0 +1,25 @@ +function pi = sum_prod_CPD_and_pi_msgs(CPD, n, ps, msg, except) +% SUM_PROD_CPD_AND_PI_MSGS Compute pi = sum_{u\p} P(n|u) prod_{ui in ps\p} pi_msg(ui->n) +% pi = sum_prod_CPD_and_pi_msgs(CPD, n, ps, msg, p) +% +% pi = prod_i (qi pi_msg(ui->n) + 1 - pi_msg(ui->n)) = prod_i (1 - ci pi_msg(ui->n)) +% is the product of the endorsement withheld (Pearl p188 eqn 4.56) +% We skip p from this product, if specified. + +if nargin < 5, except = -1; end +pi = 1; +for i=1:length(ps) + p = ps(i); + if p ~= except + pi_from_parent = msg{n}.pi_from_parent{i}; + q = CPD.inhibit(i); + c = 1-q; + pi = pi * (1 - c*pi_from_parent(2)); + end +end +% The pi msg that a leak node sends to its child is [0 1] +% since its own pi is [0 1] and its lambda to self is [0 1]. +q = CPD.leak_inhibit; +% 1 - c*pi_from_parent = 1-c*1 = q +pi = pi * q; + |