%A Joyce Aitchison
%A Linda Cummings
%A Giles Richardson
%A Jonathan Rougier
%L miis33
%T Uncertainty of flow in porous media
%D 2005
%X The problem posed to the Study Group was, in essence, how to estimate the probability distribution of f(x) from the probability distribution of x. Here x is a large vector and f is a complicated function which can be expensive to evaluate. For Schlumberger's applications f is a computer simulator of a hydrocarbon reservoir, and x is a description of the geology of the reservoir, which is uncertain.