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Scripting

Joule core provides the ability to deploy declariative expressions using the custom analytics processor. This has been reused within the context of feature engineering to enable users to define custom calculations within the DSL.
Example
The below example computes, per event, the spend ration based upon a Javascript expression. 
features:
  compute:
    spend_ratio:
      scripting:
        macro:
          expression: 1 - spend/avg_spend
          variables:
            avg_spend: 133.78
Attributes
Attribute
Description
Data Type
Required
expression
A valid mathematical expression
String
language
List of supported feature functions
String
Default: js
variables
Map of variables to be used during the execution of the expression
Map

Attribute	Description	Data Type
expression	A valid mathematical expression	String
language	List of supported feature functions	String Default: js
variables	Map of variables to be used during the execution of the expression	Map

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Feature Engineering

Scaling

Last modified 6mo ago