nessai.evidence

Functions related to computing the evidence.

Module Contents

Functions

logsubexp(x, y)	Helper function to compute the exponential
log_integrate_log_trap(log_func, log_support)	Trapezoidal integration of given log(func). Returns log of the integral.

Attributes

logger

nessai.evidence.logger

nessai.evidence.logsubexp(x, y)

Helper function to compute the exponential of a difference between two numbers

Computes: x + np.log1p(-np.exp(y-x))

Parameters

x, yfloat or array_like

Inputs

nessai.evidence.log_integrate_log_trap(log_func, log_support)

Trapezoidal integration of given log(func). Returns log of the integral.

Parameters

log_funcarray_like

Log values of the function to integrate over.

log_supportarray_like

Log prior-volumes for each value.

Returns

float

Log of the result of the integral.