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Narrowing Inputs - Prediction Model w/ Poisson distributed target

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Narrowing Inputs - Prediction Model w/ Poisson distributed target

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Hi,

 

I'm new to use Enterprise Miner, and Predictive Modeling in general, but have a stats background.  I have a dataset with about 100 inputs and a target variable with a discrete Poisson distribution.  I'd like to know:

 

1) Can I use a decision tree model in EM to help me narrow down inputs for a Poisson Model?

 

2) Can EM model a Poisson distribution, without using the "Rate Making" node (I don't have this node)?

 

Please let me know what additional information you need to help me answer my questions.

 

Thank you!


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‎12-09-2015 07:08 PM
SAS Super FREQ
Posts: 306

Re: Narrowing Inputs - Prediction Model w/ Poisson distributed target

Oh great, then you can use the HP GLM node (on the HPDM tab) - set the level of your target as interval (even though it is integer-valued) and by default, the HP GLM node will use the Poisson probability distribution with a log link function.  

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Super Contributor
Posts: 337

Re: Narrowing Inputs - Prediction Model w/ Poisson distributed target

Hi,

What version of Enterprise Miner do you have?
What are you trying to model? Just asking to confirm your discrete target is nominal.

 

Thanks!

Contributor
Posts: 41

Re: Narrowing Inputs - Prediction Model w/ Poisson distributed target

Posted in reply to M_Maldonado
Thank you Miguel. I'm using EM 13.1.

My discrete target is ordinal, with a minimum of 1.

SAS Super FREQ
Posts: 306

Re: Narrowing Inputs - Prediction Model w/ Poisson distributed target

Hi there...

 

1) Yes, decision trees make no assumptions about the distribution of your target and are very robust, so you can certainly use that for variable selection

 

2) That depends... what version of Enterprise Miner do you have?

Contributor
Posts: 41

Re: Narrowing Inputs - Prediction Model w/ Poisson distributed target

Posted in reply to WendyCzika
Thank you Wendy for your reply. I'm using EM 13.1
Solution
‎12-09-2015 07:08 PM
SAS Super FREQ
Posts: 306

Re: Narrowing Inputs - Prediction Model w/ Poisson distributed target

Oh great, then you can use the HP GLM node (on the HPDM tab) - set the level of your target as interval (even though it is integer-valued) and by default, the HP GLM node will use the Poisson probability distribution with a log link function.  

Contributor
Posts: 41

Re: Narrowing Inputs - Prediction Model w/ Poisson distributed target

Posted in reply to WendyCzika

Great...thank you Wendy!

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