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tf.math.polygamma

Compute the polygamma function \(\psi^{(n)}(x)\).

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
a A Tensor. Must be one of the following types: float32, float64.
x A Tensor. Must have the same type as a.
name A name for the operation (optional).
Returns
A Tensor. Has the same type as a.

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Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.3/api_docs/python/tf/math/polygamma