TensorFlow 1 version
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Compute the polygamma function \(\psi^{(n)}(x)\).
tf.math.polygamma(
a, x, name=None
)
The polygamma function is defined as:
\(\psi^{(a)}(x) = \frac{d^a}{dx^a} \psi(x)\)
where \(\psi(x)\) is the digamma function. The polygamma function is defined only for non-negative integer orders \a\.
Args | |
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a
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A Tensor. Must be one of the following types: float32, float64.
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x
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A Tensor. Must have the same type as a.
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name
|
A name for the operation (optional). |
Returns | |
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A Tensor. Has the same type as a.
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