We study the efficient construction of good polynomial lattice rules, which are special instances of quasi-Monte Carlo (QMC) methods. The integration rules obtained are of particular interest for the approximation of multivariate integrals in weighted Walsh spaces. In particular, we study a construction algorithm which assembles the components of the generating vector, which is in this case a vector of polynomials over a finite field, of the polynomial lattice rule in a component-wise fashion. We show that the constructed QMC rules achieve the almost optimal error convergence order in the function spaces under consideration and prove that the obtained error bounds can, under certain conditions on the involved weights, be made independent of the dimension. We also demonstrate that our alternative component-by-component construction, which is independent of the underlying smoothness of the function space, can be implemented relatively easily in a fast manner. Numerical experiments confirm our theoretical findings.
翻译:我们研究如何高效地构建良好的多式花旗规则,这些规则是准蒙特卡洛(QMC)方法的特殊例子。获得的集成规则对于加权沃尔什空格中多变构件的近似特别有意义。特别是,我们研究一种构造算法,将生成矢量的组件集合在一起,在此情况下,它是以一个限定字段的多式矢量矢量,是多式花旗规则的组成部分。我们表明,构建的QMC规则在所考虑的功能空间中达到了几乎最佳的差错汇合顺序,并证明在所涉重量的某些条件下,获得的误差界限可以独立于这一维度。我们还表明,与功能空间基本光滑度无关的替代构件逐个构件构造可以比较容易地快速实施。数字实验证实了我们的理论结论。