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[Help-gsl] Vegas, how accurate to compute integrand
From: |
Tommy Nordgren |
Subject: |
[Help-gsl] Vegas, how accurate to compute integrand |
Date: |
Sat, 12 Nov 2005 21:39:30 +0100 |
I have a complicated Integral, in five+one dimensions. The integrand
have a trigonometric dependance
on five angles, and the sixth dimension is a radius going from 0 to
infinity.
I use vegas to integrate across the angular dependencies, where the
function to be integrated is computed
by computing the fourier integral with the angles held constant.
How precise should I set the relative and absolute error bounds in
the fourier integral, to allow vegas to return
as accurate results as feasible. Currently I use 1e-4 as both
relative and absolute error bounds.
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Tommy Nordgren
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