Sigmoid
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Sigmoid activation. sigmoid(x) = 1 / (1 + exp(-x))
.
Applies the sigmoid activation function. For small values (<-5), sigmoid
returns a value close to zero, and for large values (>5) the result of the function gets close
to 1.
Sigmoid is equivalent to a 2-element Softmax, where the second element is assumed to be zero.
The sigmoid function always returns a value between 0 and 1.
For example:
Operand<TFloat32> input = tf.constant(
new float[] {-20f, -1.0f, 0.0f, 1.0f, 20f});
Sigmoid<TFloat32> sigmoid = new Sigmoid<>(tf);
Operand<TFloat32> result = sigmoid.call(input);
// result is [2.0611537e-09f, 2.6894143e-01f,
// 5.0000000e-01f,7.3105860e-01f, 1.f]
Public Constructors
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Sigmoid(Ops tf)
Creates a Sigmoid activation.
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Inherited Methods
From class
java.lang.Object
boolean
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equals(Object arg0)
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final
Class<?>
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getClass()
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int
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hashCode()
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final
void
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notify()
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final
void
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notifyAll()
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String
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toString()
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final
void
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wait(long arg0, int arg1)
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final
void
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wait(long arg0)
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final
void
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wait()
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Public Constructors
public
Sigmoid
(Ops tf)
Creates a Sigmoid activation.
Public Methods
Gets the calculation operation for the activation.
Returns
- The operand for the activation
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Last updated 2021-11-29 UTC.
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