Search found 19 matches

by Jochen0x90h
Tue Apr 29, 2014 10:54 am
Forum: SMILE
Topic: Does Smile use something like AIS-BN?
Replies: 8
Views: 5352

Re: Does Smile use something like AIS-BN?

Is the URL available by now?
by Jochen0x90h
Fri Apr 04, 2014 1:13 pm
Forum: SMILE
Topic: Loopy Belief Propagation
Replies: 5
Views: 2763

Re: Loopy Belief Propagation

Have you any experience with residual belief propagation? Does it converge to a solution on networks where synchronous loopy belief propagation starts to oscillate?
by Jochen0x90h
Wed Feb 12, 2014 12:33 pm
Forum: SMILE
Topic: Loopy Belief Propagation
Replies: 5
Views: 2763

Re: Loopy Belief Propagation

In Java the BayesAlgorithmType has a public static final int LBP = 9; which must be Loopy Belief Propagation if you say that it is supported. How do you set iteration count and damping?
by Jochen0x90h
Wed Jan 29, 2014 6:16 pm
Forum: SMILE
Topic: Loopy Belief Propagation
Replies: 5
Views: 2763

Loopy Belief Propagation

Hi!
Is it possible to select pure loopy belief propagation as algorithm even if it is not correct, only to see its result?
-Jochen
by Jochen0x90h
Tue Aug 27, 2013 2:01 pm
Forum: SMILE
Topic: QMR style net crashes
Replies: 4
Views: 2274

Re: QMR style net crashes

I already thought of this possibility that you calculate with the "unrolled" CPTs. So at first I can continue with my own loopy belief propagation and then see if I can verify the result by setting the nodes with highest probability as targets in SMILE. Maybe loopy belief propagation is already suff...
by Jochen0x90h
Mon Aug 26, 2013 10:30 am
Forum: SMILE
Topic: QMR style net crashes
Replies: 4
Views: 2274

Re: QMR style net crashes

Maybe some nodes have too many parents. If I restrict parent count (e.g. to 3 as a first test) it works. for parent count restricted to 20 it starts to fail. Interesting is that Likelihood Sampling takes very long but terminates, but EPIS-Sampling crashes after some time. I wonder why this is so bec...
by Jochen0x90h
Fri Aug 23, 2013 4:41 pm
Forum: SMILE
Topic: QMR style net crashes
Replies: 4
Views: 2274

QMR style net crashes

Hi!

I have a QMR style test network. It can be loaded, but when evaluating it it crashes. I tested different algorithms. Do you want to have a look at it?
For some reason I can't attach the file, it always says that it is empty. The zipped version is 33kb. Can I send it by mail?

Jochen
by Jochen0x90h
Wed Aug 21, 2013 1:03 pm
Forum: SMILE
Topic: How to set algorithm with Java API
Replies: 1
Views: 1831

Re: How to set algorithm with Java API

I found it: I forgot to reverse the order of the parents for CPT nodes. I organize CPTs in own states, first parent to last parent states while smile organizes CPTs in own states, last parent to first parent states.
by Jochen0x90h
Wed Aug 21, 2013 12:11 pm
Forum: SMILE
Topic: How to set algorithm with Java API
Replies: 1
Views: 1831

How to set algorithm with Java API

I have a very simple network (rain, sprinkler, holmes, watson, see attached file). This works perfectly in the gui (genie), but using the java api the results are quite imprecise. In the gui I have the default settings for algorithm (Clustering, Policy Evaluation, Hybrid LW). In Java I tried the opt...
by Jochen0x90h
Mon Aug 19, 2013 3:00 pm
Forum: SMILE
Topic: How to set output order of noisy max
Replies: 7
Views: 3732

Re: How to set output order of noisy max

Hi Adam, in the properties dialog for noisy max I discovered an outcome order selection which allows none, low to high and high to low. This looks like what I'm searching for, but it does not seem to have an effect, also the possibility to set none is strange as only low to high and high to low make...
by Jochen0x90h
Wed Aug 14, 2013 3:48 pm
Forum: SMILE
Topic: How to set output order of noisy max
Replies: 7
Views: 3732

Re: How to set output order of noisy max

So is it necessary that the noisy max always sees the distinguished state as last state (highest id)? I would think this is theoretically not necessary, but is it necessary for the implemented algorithms? I can remember that there are special optimizations possible that exploit the noisy max disting...
by Jochen0x90h
Thu Aug 08, 2013 3:04 pm
Forum: SMILE
Topic: How to set output order of noisy max
Replies: 7
Views: 3732

Re: How to set output order of noisy max

Thanks for your answer. The problem arises when converting a network description to a SMILE network. I will reorder the states, i.e. if the output of a noisy max is fed into another node the cpt of the other node is reordered for the noisy max parent so that it reflects the actual order used by SMIL...
by Jochen0x90h
Wed Aug 07, 2013 2:52 pm
Forum: SMILE
Topic: how to use noisy adder
Replies: 0
Views: 8254

how to use noisy adder

I'd like to test the noisy adder, also known as noisy average in the thesis of zagorecki (Local Probability Distributions in Bayesian Networks: Knowledge Elicitation and Inference). I use this code to create the pump example: Network network = new Network(); int pump = network.addNode(Network.NodeTy...
by Jochen0x90h
Wed Aug 07, 2013 2:20 pm
Forum: SMILE
Topic: Java setNoisyParentStrengths fails
Replies: 3
Views: 2532

Re: Java setNoisyParentStrengths fails

I'm using OSX. Please send me the link.
by Jochen0x90h
Thu Aug 01, 2013 1:26 pm
Forum: SMILE
Topic: How to set output order of noisy max
Replies: 7
Views: 3732

How to set output order of noisy max

Hi! I'd like to define nodes with outcome id 0 for false and outcome id 1 for true. When two of these nodes are the parents of a noisy max node, I have to set the parent strengths to [1 0]. The noisy max node has the convenient setNoisyParentStrengths method (java) to do this. But how do I set the s...