Compute the polygamma function \(\psi^{(n)}(x)\).
tf.raw_ops.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 | |
|---|---|
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.
|