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arXiv · 1610.05862

Interval Superposition Arithmetic

Yanlin Zha·Mario E. Villanueva·Boris Houska
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Abstract

This paper presents a novel set-based computing method, called interval superposition arithmetic, for enclosing the image set of multivariate factorable functions on a given domain. In order to construct such enclosures, the proposed arithmetic operates over interval superposition models which are parameterized by a matrix with interval components. Every point in the domain of a factorable function is then associated with a sequence of components of this matrix and the superposition, i.e. Minkowski sum, of these elements encloses the image of the function at this point. Interval superposition arithmetic has a linear runtime complexity with respect to the number of variables. Besides presenting a detailed theoretical analysis of the accuracy and convergence properties of interval superposition arithmetic, the paper illustrates its advantages compared to existing set arithmetics via numerical examples.

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Yanlin Zha, Mario E. Villanueva, Boris Houska. 2016-10-19. Interval Superposition Arithmetic. https://arxiv.org/abs/1610.05862

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