tf.math.igammac  |  TensorFlow v2.16.1 (original) (raw)

Compute the upper regularized incomplete Gamma function Q(a, x).

View aliases

Compat aliases for migration

SeeMigration guide for more details.

tf.compat.v1.igammac, tf.compat.v1.math.igammac

tf.math.igammac(
    a: Annotated[Any, tf.raw_ops.Any],
    x: Annotated[Any, tf.raw_ops.Any],
    name=None
) -> Annotated[Any, tf.raw_ops.Any]

Used in the notebooks

Used in the tutorials
TFP Release Notes notebook (0.13.0)

The upper regularized incomplete Gamma function is defined as:

\(Q(a, x) = Gamma(a, x) / Gamma(a) = 1 - P(a, x)\)

where

\(Gamma(a, x) = \int_{x}^{\infty} t^{a-1} exp(-t) dt\)

is the upper incomplete Gamma function.

Note, above P(a, x) (Igamma) is the lower regularized complete Gamma function.

Args
a A Tensor. Must be one of the following types: bfloat16, half, 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.