tf.keras.activations.elu

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Exponential linear unit.

tf.keras.activations.elu(
    x, alpha=1.0
)

Arguments:

• x: Input tensor.
• alpha: A scalar, slope of negative section.

Returns:

The exponential linear activation: x if x > 0 and alpha * (exp(x)-1) if x < 0.

Reference:

• Fast and Accurate Deep Network Learning by Exponential Linear Units (ELUs)