BayesFusion Support Forum

Hi , urgent question: If I use conditional costs for a test in the diagnosis tool that means that the cost of my test is depending on the outcome of another nodes. I expected that the expected cost will be calculated and weight against the information gain depending on the probabilities of these nod...

Hi , urgent question: If I use conditional costs for a test in the diagnosis tool and move the slider: first the diagnostic value doesn't change. Only after I set evidence for all nodes which influence the cost of the test node moving the slide has an effect. But why only after setting evidence??? A...

I debugged my program and I found out that ObservationInfo.cost is always 0 , that explains that the slider move doent change anthing. But as you can see in my example2.xls I defined costs != 0. so why ObservationInfo.cost = 0?

Hi many thanks for your relply. yes its Java basics, but its nevertheless strange that in the Jsmile-Api-documentation are setters and getters mentioned which dont exist. But another question: How can I set the entropy-cost-ratio? (as I do manually by moving the slider). Can I do like this: DiagResu...

Hi,

I really dont know how to get infoGain for the best ranked (highest diagnostic value) test via Jsmile.
Does anybody have a code sample?

I really appreciate any help!
samoht

Hi, in http://genie.sis.pitt.edu/wiki/JSMILE:_ObservationInfo there are the following methods described: double getEntropy() void setEntropy(double entropy) double getCost() void setCost(double cost) double getInfoGain() void setInfoGain(double infoGain) But the class ObservationInfo show me in Ecli...

Hi, thanks for reply. I understood and it works now for example.xdsl. The diagnostic values are changing if i use different probabilities for this example. But in example2.xdsl the diagnostic values dont change if i move the slider. Why? Another question: I cannot use explicit utility nodes in the d...

Hello,

is it possible to execute the diagnosis tool using Jsmile?
I want to access the name of the best ranked test by Jsmile.

best regards
Samoht

Hello,

thanks for reply.
here just the example in the genie help. If I change the slider there is only change from not beneficially to 0 but no change in the diagnostic value or ranking.


samoht

Hallo,

my training data sets are all complete.

samoht

Hello, I learned the parameters of my Bayes-net using the EM-algorithm. I have no a priori knowledge about the parameters. Is it better to start with a uniform distribution or to runthe algorithm n-times using the randomize-initial-parameters-option and choose the one with the highest log(p)-value? ...

hi, thanks for the reply. But if there is no absolute meaning what is the difference between: case 1: Test1: 0.15 Test2: 0.10 and case 2: Test1: 0.85 Test2: 0.80 ? In both cases Test1 would be preferred and the difference to Test2 is in both cases 0.05. second question: when is a test rated as not b...

Hi Mark, thanks for your reply. That means that if I discretize my data to extreme and then learn my bayes-net with this data that i will get very good results for this trining data. But if my data only slightly differ from my training data the net result can be very poor since for many bins there w...

Hello, I use the diagnosis tool for my Bayes-Net When I try to change the Entropy/Cost-Ratio neither the ranking of the tests nor the absolute diagnostic values are changing.Does it mean that there is something wrong with my bayes-net and where can be the error? I defined costs for my tests greater ...

Hello, I have to discretize my spreadsheet data before i learn the parameters of my Bayes-Net with the EM-Algorithm. The net structure is already defined. The finer i discretize the data the more states for teh nodes i get. Can I generally say the finer i discretize my data the better will be the re...