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- W3205889632 abstract "Abstract Coupling-from-the-past (CFTP) methods have been used to generate perfect samples from finite Gibbs hard-sphere models, an important class of spatial point processes consisting of a set of spheres with the centers on a bounded region that are distributed as a homogeneous Poisson point process (PPP) conditioned so that spheres do not overlap with each other. We propose an alternative importance-sampling-based rejection methodology for the perfect sampling of these models. We analyze the asymptotic expected running time complexity of the proposed method when the intensity of the reference PPP increases to infinity while the (expected) sphere radius decreases to zero at varying rates. We further compare the performance of the proposed method analytically and numerically with that of a naive rejection algorithm and of popular dominated CFTP algorithms. Our analysis relies upon identifying large deviations decay rates of the non-overlapping probability of spheres whose centers are distributed as a homogeneous PPP." @default.
- W3205889632 created "2021-10-25" @default.
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- W3205889632 date "2021-09-01" @default.
- W3205889632 modified "2023-10-14" @default.
- W3205889632 title "Rejection- and importance-sampling-based perfect simulation for Gibbs hard-sphere models" @default.
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- W3205889632 doi "https://doi.org/10.1017/apr.2021.1" @default.
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