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Maximum size prediction in Wicksell’s corpuscle problem for the exponential tail data. (English) Zbl 1037.62098
A collection of random spheres in $$R^3$$ is considered. The centres of the spheres form a Poisson point process, the area of a great circle of the sphere is independent of its position and has a CDF $$F_V(x)$$. $$F_A(x)$$ is the CDF of the area of circles which are planar sections of the spheres cut by a plane. The objective of the paper is to predict the characteristics of the upper tail of $$1-F_V(x)$$ by observations from $$F_A$$. It is proposed to use a truncated exponential model $F_V(x)= {\mathbb I}\{0\leq t\leq u\}(1-\exp(-(t-u)/\xi))$ under which $(1-F_A(t))/(1-F_A(u))=\exp(-(t-u)/\xi),\quad t\geq u.$ Problems of the choice of a threshold value are discussed. Results of simulations are presented. This technique is applied to the analysis of the size of graphite nodules in spheroid graphite cast iron.

MSC:
 62M99 Inference from stochastic processes 62M30 Inference from spatial processes 60D05 Geometric probability and stochastic geometry 62P30 Applications of statistics in engineering and industry; control charts
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