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- W1938947360 abstract "We develop a fast algorithm for the construction of good rank-1 lattice rules which are a quasi-Monte Carlo method for the approximation of multivariate integrals. A popular method to construct such rules is the component-by-component algorithm which is able to construct good lattice rules that achieve the optimal theoretical rate of convergence. The construction time of this algorithm is O(sn), or O(sn) when using O(n) memory, for an s-dimensional lattice rule with n points. We show how to construct good lattice rules in time O(sn log(n)), using O(n) memory, by means of a new algorithm, called the fast component-by-component algorithm. First this is shown for the base case when n is a prime number and the underlying function space is a weighted, shift-invariant and tensor-product reproducing kernel Hilbert space. Then we show that, by a minor increase in construction cost, also more generally weighted function spaces can be handled by the fast algorithm. In particular we show this for order-dependent weights. When n is not a prime number it turns out that fast construction is also possible, although the construction is more involved for numbers n which have a large number of unique prime factors. An additional advantage is obtained when choosing n to be a prime power, since then the rules are embedded for increasing powers of the prime. Using this embedding, we propose a new fast algorithm to construct lattice sequences which can be used point by point. Two natural extensions of the algorithm are the construction of polynomial lattice rules and so called copy rules. We show that also here the fast componentby-component algorithm can be applied. The quality of the constructed point sets is finally demonstrated on some finance and statistics examples." @default.
- W1938947360 created "2016-06-24" @default.
- W1938947360 creator A5045125806 @default.
- W1938947360 date "2007-04-21" @default.
- W1938947360 modified "2023-09-23" @default.
- W1938947360 title "Fast construction of good lattice rules" @default.
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