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P. E. Jupp

Publications and source records attributed to P. E. Jupp.

7 recordsLinked to original sources
arXiv2018

Measures of goodness of fit obtained by canonical transformations on Riemannian manifolds

The standard method of transforming a continuous distribution on the line to the uniform distribution on the unit interval is the probability integral transform. Analogous transforms exist on compact Riemannian manifolds, in that, for each distribution with continuous positive density, there is a continuous mapping of the manifold to itself that transforms the distribution into the uniform distribution. In general, this mapping is far from unique. We introduce a construction of a version of such a probability integral that is almost canonical. The construction is extended to shape spaces, Cartan-Hadamard manifolds, and simplices. The probability integral transform is used to derive tests of goodness of fit from tests of uniformity. Illustrative examples of these tests of goodness of fit are given involving (i) Fisher distributions on the 2-sphere, (ii) isotropic Mardia-Dryden distributions on the shape space of triangles in the plane. Their behaviour is investigated by simulation.

math.ST↗
arXiv2017

Statistics of ambiguous rotations

The orientation of a rigid object can be described by a rotation that transforms it into a standard position. For a symmetrical object the rotation is known only up to multiplication by an element of the symmetry group. Such ambiguous rotations arise in biomechanics, crystallography and seismology. We develop methods for analyzing data of this form. A test of uniformity is given. Parametric models for ambiguous rotations are presented, tests of location are considered, and a regression model is proposed. A brief illustrative example involving orientations of diopside crystals is given.

math.ST↗
arXiv2003

On Quantum Statistical Inference, II

Interest in problems of statistical inference connected to measurements of quantum systems has recently increased substantially, in step with dramatic new developments in experimental techniques for studying small quantum systems. Furthermore, theoretical developments in the theory of quantum measurements have brought the basic mathematical framework for the probability calculations much closer to that of classical probability theory. The present paper reviews this field and proposes and interrelates a number of new concepts for an extension of classical statistical inference to the quantum context.

quant-ph↗
arXiv2003

On Quantum Statistical Inference, I

Recent developments in the mathematical foundations of quantum mechanics have brought the theory closer to that of classical probability and statistics. On the other hand, the unique character of quantum physics sets many of the questions addressed apart from those met classically in stochastics. Furthermore, concurrent advances in experimental techniques and in the theory of quantum computation have led to a strong interest in questions of quantum information, in particular in the sense of the amount of information about unknown parameters in given observational data or accessible through various possible types of measurements. This scenery is outlined (with an audience of statisticians and probabilists in mind).

quant-ph↗