"Generate Attribute using values of Aggregate Attributes"

svtorykhsvtorykh Member Posts: 35 Guru
edited June 2019 in Help

Hi RM team, seems to be a very basic calculation, but can't create an expression for the following scenario.

I have example set with Positivity values (positive, neutral, negative). I'm using aggregate operator to perform counts for all example set.


Have table as output in the following format:

Positivity(Att1) Count of Positivity (Att2)

Positive                    500

Neutral                     100

Negative                   500


I then need to generate another Attribute (positivity %), which needs to have a ratio value based on positive/negative values from att2.


What is the proper expression to use in this case?




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    MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,524 RM Data Scientist

    Hi @svtorykh,

    one way to do this is to extract the number of examples before hand using Extract Macro and then simply divide by it using Generate Attributes.




    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
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