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arxiv: 1608.06061 · v3 · pith:KBG45C7Mnew · submitted 2016-08-22 · 🧮 math.NA

On the optimal order of integration in Hermite spaces with finite smoothness

classification 🧮 math.NA
keywords hermiteintegrationmathbboptimalorderratesmoothnessspaces
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We study the numerical approximation of integrals over $\mathbb{R}^s$ with respect to the standard Gaussian measure for integrands which lie in certain Hermite spaces of functions. The decay rate of the associated sequence is specified by a single integer parameter which determines the smoothness classes and the inner product can be expressed via $L_2$ norms of the derivatives of the function. We map higher order digital nets from the unit cube to a suitable subcube of $\mathbb{R}^s$ via a linear transformation and show that such rules achieve, apart from powers of $\log N$, the optimal rate of convergence of the integration error.

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