Wednesday, March 21, 2012

naives bayes prediction

Hi,

I am trying to deploy a Naives bayes network.But in spite of I am getting an dependecy network that relates 3 variables,

I've got an classification Matrix where all the predicted values are the same.

Counts for nai 1 on [Cod Conceito]

Predicted

Missing (Actual)

0 (Actual)

1 (Actual)

2 (Actual)

3 (Actual)

4 (Actual)

5 (Actual)

6 (Actual)

7 (Actual)

8 (Actual)

9 (Actual)

Missing

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

2

0

57578

2499

11292

102

2374

317

80

271

989

2

0

0

0

0

0

0

0

0

0

0

0

3

0

0

0

0

0

0

0

0

0

0

0

4

0

0

0

0

0

0

0

0

0

0

0

5

0

0

0

0

0

0

0

0

0

0

0

6

0

0

0

0

0

0

0

0

0

0

0

7

0

0

0

0

0

0

0

0

0

0

0

8

0

0

0

0

0

0

0

0

0

0

0

9

0

0

0

0

0

0

0

0

0

0

0

I tried to deploy the same data on Tanagra's software and I've got predictions on the other values.

I tried to change all the parameters but the results are always the same

thanks in advance

Post This question in the data mining forum: http://forums.microsoft.com/MSDN/ShowForum.aspx?ForumID=81&SiteID=1|||

What happens when you try to use decision trees?

One clarification - our Naive Bayes algorithm is a Naive Bayes classifier, not a Naive Bayes network. This may be the difference between the packages, but I'm not familiar with the package you mentioned.

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with decision trees it appears with several nodes but the classification matrix have the same distribution. only value 1 has predicted values

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Is the target column modeled as Discrete or Discretized? If Discretized, could you try changing it to discrete?

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