Altair RISE

A program to recognize and reward our most engaged community members

Nominate Yourself Now!

Can any one help me with how to perform linear regression in rapidminer

Aravind_Yadav

Hi,
I have got an error while applying linear regression please find the screenshot and help me with this issue

Image: https://us.v-cdn.net/6030995/uploads/editor/p7/drwie1yi09cp.png

Find more posts tagged with

AI Studio

Accepted answers

BalazsBaranyRM

You can use "Nominal to Numerical" to encode the categorical data to 0/1 numbers, by creating new attributes. Dummy coding is a good choice.

All comments

Caperez

Hi @Aravind_Yadav,
Remember that the linear regression doesn't work with nominal attributes, the model is waiting for numerical data.

Best,

Cesar

BalazsBaranyRM

You can use "Nominal to Numerical" to encode the categorical data to 0/1 numbers, by creating new attributes. Dummy coding is a good choice.

Aravind_Yadav

Image: https://us.v-cdn.net/6030995/uploads/editor/rl/it3u8u8lbt2h.png

Aravind_Yadav

I have tried and getting the error can anyone please help with this issue?

BalazsBaranyRM

Hi!

You connected Group Models in a wrong way.
The first input of Group Models should be the pre output of Nominal to Numerical. The second will be the actual model (mod output of Linear Regression). Then you will apply the grouped model (the one consisting of NomToNum and the regression) using Apply Model. This makes sure that the same kinds of transformations are applied on both the training and the testing dataset.

Regards,
Balázs