pyhs3.distributions.GenericDist

class pyhs3.distributions.GenericDist(*, name, expression)[source]

Generic distribution implementation.

Evaluates custom mathematical expressions using SymPy parsing and PyTensor computation graphs.

Parameters:

  • name (str) – Name of the distribution

  • expression (str) – Mathematical expression string to be evaluated

Supported Functions:

  • Basic arithmetic: +, -, , /, *

  • Trigonometric: sin, cos, tan

  • Exponential/Logarithmic: exp, log

  • Other: sqrt, abs

Examples

Create a quadratic distribution:

>>> dist = GenericDist(name="quadratic", expression="x**2 + 2*x + 1")

Create a custom exponential with oscillation:

>>> dist = GenericDist(name="exp_cos", expression="exp(-x**2/2) * cos(y)")

Create a complex mathematical function:

>>> dist = GenericDist(name="complex", expression="sin(x) + log(abs(y) + 1)")
__init__(*, name, expression)[source]

Initialize a GenericDist.

Parameters:

  • name (str) – Name of the distribution

  • expression (str) – Mathematical expression string

Methods

__init__(*, name, expression)

Initialize a GenericDist.

expression(distributionsandparameters)

Evaluate the generic distribution using expression parsing.

from_dict(config)

Create a GenericDist from a dictionary configuration.