chainer.functions.polygamma

chainer.functions.polygamma(n, x)

Polygamma function.

Note

Forward computation in CPU can not be done if SciPy is not available.

Parameters:

• n (Variable or numpy.ndarray or cupy.ndarray) – Input variable.
• x (Variable or numpy.ndarray or cupy.ndarray) – Input variable.

Returns:

Output variable.

Return type:

Variable