trait FeatureDerivationFunction extends FeatureDerivationFunctionBase
Produces a derived feature given some input features
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- abstract def getFeatures(inputs: Seq[Option[FeatureValue]]): Seq[Option[FeatureValue]]
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var
_params: Option[Config]
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def
getInputFeatureList(): Seq[JoiningFeatureParams]
return dependency/input feature list This function is only used in derivation function that produces multiple derived features, i.e., derived features defined within 'advancedDerivations' section.
return dependency/input feature list This function is only used in derivation function that produces multiple derived features, i.e., derived features defined within 'advancedDerivations' section. Derived features defined in 'derivations' section do not need to override this.
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- FeatureDerivationFunctionBase
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def
getOutputFeatureList(): Seq[String]
return output feature list Used together with getInputFeatureList()
return output feature list Used together with getInputFeatureList()
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def
init(params: Config): Unit
init with parameter map
init with parameter map
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