Re: [R] rpart cutpoint interpretation

[Therneau, Terry M., Ph.D.]

The cutpoint is on the predictor, so the interpretation is the same as it is for any other 
rpart model.  The subjects with predictor < cutpoint form one group and those > cutpoint 
the other.  The cutpoint is chosen to give the greatest difference in "average y" between 
the groups.  For poisson "averge y" is an event rate.


On 10/08/2015 05:00 AM, r-help-requ...@r-project.org wrote:

I am trying to derive cutpoint/threshold with a poisson distributed
dependent variable. I know how to interpret cutpoint with binary dependent
variable based on direction. Can some on help me to intrepret cutpoint for
poisson case with one independent variable with the derived threshold.


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Re: [R] rpart cutpoint interpretation

[Kishor Tappita]

Thank you so much for the clarification Terry.

On Thu, Oct 8, 2015 at 6:03 PM, Therneau, Terry M., Ph.D.  wrote:

> The cutpoint is on the predictor, so the interpretation is the same as it
> is for any other rpart model.  The subjects with predictor < cutpoint form
> one group and those > cutpoint the other.  The cutpoint is chosen to give
> the greatest difference in "average y" between the groups.  For poisson
> "averge y" is an event rate.
>
>
> On 10/08/2015 05:00 AM, r-help-requ...@r-project.org wrote:
>
>> I am trying to derive cutpoint/threshold with a poisson distributed
>> dependent variable. I know how to interpret cutpoint with binary dependent
>> variable based on direction. Can some on help me to intrepret cutpoint for
>> poisson case with one independent variable with the derived threshold.
>>
>

[[alternative HTML version deleted]]

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[R] rpart cutpoint interpretation

[Kishor Tappita]

Hi All,

I am trying to derive cutpoint/threshold with a poisson distributed
dependent variable. I know how to interpret cutpoint with binary dependent
variable based on direction. Can some on help me to intrepret cutpoint for
poisson case with one independent variable with the derived threshold.

Thanks in advance.

Regards,
Kishor

[[alternative HTML version deleted]]

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