[comp.theory] Probably-Good High-Dimensional Numerical Integration

dhw@iti.org (David H. West) (05/10/91)

I saw (but can't find) a report that someone has discovered a way
to hybridize Monte Carlo and Gaussian Numerical Integration: you
specify a tolerance e and a number of dimensions k, and the method
computes an integer N and a set of N points (and presumably weights)
in the unit k-dimensional hypercube such that in some probabilistic 
sense function values at those points allow the integral of the 
function to be estimated with precision better than e for "almost
all" functions, AND the behavior of N with k is much better than the 
e^-k that Monte Carlo gives.

Can anyone point me to this work?  Please email.

thanks,

-David West       dhw@iti.org

kuszewsk@euler.biology.yale.edu (John Kuszewski) (05/13/91)

Check out 

"Average case complexity of Multivariate integration" by Henryk Wozniakowski in  
Bull. Amer. Math. Soc. 24, p. 185 (Jan. 1991)

and 

"Theory and applications of information-based complexity" by H. Wozniakowski  
and J. F. Traub to appear in 1990 Lectures in Complex Systems, SFI Studies in  
the Sciences of Complexity, Lect. Vol. III (L. Nadel and D. Stein, eds.),  
Addison-Wesley, 1991

If you write to Dr. Traub's secretary, Kerny McLaughlin, at  
kerny@cs.columbi.edu and ask really nicely, she'll send you preprints of both.  

Hope this helps.


---
John Kuszewski
kuszewsk@euler.biology.yale.edu