Due to recent updates, all users are required to create an Altair One account to login to the RapidMiner community. Click the Register button to create your account using the same email that you have previously used to login to the RapidMiner community. This will ensure that any previously created content will be synced to your Altair One account. Once you login, you will be asked to provide a username that identifies you to other Community users. Email us at Community with questions.
Can any one help me with how to perform linear regression in rapidminer
Aravind_Yadav
Member Posts: 4 
Learner I
in Help
Hi,
I have got an error while applying linear regression please find the screenshot and help me with this issue
I have got an error while applying linear regression please find the screenshot and help me with this issue
0
Best Answer
-
BalazsBarany
Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert Posts: 955 
Unicorn
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.0
Answers
Remember that the linear regression doesn't work with nominal attributes, the model is waiting for numerical data.
Best,
Cesar
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