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wrong value type when joining

eldenoso

Hello,

I have a problem when joining two databases together. In the first one RapidMiner identifies the attribute as integer and in the other one as nominal (actually they are both just numerical). Everytime I start the process, the joining operator stops because of "wrong value types of the example sets".

What can I do to change the value types of both?

Thank you!

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Accepted answers

Thomas_Ott

You'll have to convert one of the data types (either the integer or nominal) to the same data type. You can use a Numerical to Nonminal or Nominal to Numerical operator.

OR you can just put a Guess Types operator after the Read Database operator where the integer comes in as a Nominal value.

All comments

Thomas_Ott

You'll have to convert one of the data types (either the integer or nominal) to the same data type. You can use a Numerical to Nonminal or Nominal to Numerical operator.

OR you can just put a Guess Types operator after the Read Database operator where the integer comes in as a Nominal value.