pymc.math.tanh#

pymc.math.tanh = Elemwise(scalar_op=tanh,inplace_pattern=<frozendict {}>)[source]#

hyperbolic tangent of a

Computes element-wise hyperbolic tangent of a tensor.

Parameters:

aTensorLike: Input tensor

Returns:

TensorVariable: Output tensor with the hyperbolic tangent of each element, with values in the range [-1, 1]

Notes

This function corresponds to NumPy’s np.tanh function. The hyperbolic tangent is defined as: tanh(x) = sinh(x)/cosh(x)

Examples

>>> import pytensor
>>> import pytensor.tensor as pt
>>> x = pt.vector("x")
>>> f = pytensor.function([x], pt.tanh(x))
>>> f([-1, 0, 1])
array([-0.76159416,  0.        ,  0.76159416])