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scalation.analytics

LogisticFunction

object LogisticFunction

The LogisticFunction object contains Activation functions.

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  12. def logistic(t: VectoD, a: Double, b: Double): VectoD

    Compute the vector of values of the logistic function applied to vector 't'.

    Compute the vector of values of the logistic function applied to vector 't'. The values are computed in-place.

    t

    the logistic function argument

    a

    the shift parameter

    b

    the spread parameter

  13. def logistic(t: Double, a: Double, b: Double): Double

    Compute the value of the logistic function at 't'.

    Compute the value of the logistic function at 't'.

    t

    the logistic function argument

    a

    the shift parameter

    b

    the spread parameter

  14. def logit(p: Double): Double

    Compute the log of the odds of an event occurring (e.g., success, 1).

    Compute the log of the odds of an event occurring (e.g., success, 1). The inverse of the logit function is the standard logistic function (sigmoid function).

    p

    the probability, a number between 0 and 1.

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  16. final def notify(): Unit
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  18. def sigmoid(t: VectoD): VectoD

    Return the vector of values of the sigmoid function applied to vector 't.' The values are computed in-place.

    Return the vector of values of the sigmoid function applied to vector 't.' The values are computed in-place.

    t

    the sigmoid function vector argument

  19. def sigmoid(t: Double): Double

    Compute the value of the sigmoid function at 't'.

    Compute the value of the sigmoid function at 't'. This is a special case of the logistic function, where 'a = 0' and 'b = 1'. It is also referred to as the standard logistic function. It is also the inverse of the logit function.

    t

    the sigmoid function argument

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