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The Guy Medal in Silver is awarded to an ISI Elected Member Håvard Rue for his substantial and significant contributions in the area of efficient and scalable computational techniques for the data analysts’ toolbox.

More specifically, the theory underpinning the INLA (integrated nested Laplace approximation) software. These contributions include the two highly influential and impactful JRSSB papers read before the society: ‘Approximate Bayesian inference for latent Gaussian models by using integrated nested Laplace approximations’ (co-authors: S Martino and N Chopin) and ‘An explicit link between Gaussian fields and Gaussian Markov random fields: the stochastic partial differential equation approach’ (co-authors: F Lindgren and J Lindström).

These papers focus on computational modelling issues, providing scalable techniques and practical model fitting solutions. The latter paper describes the relationship between continuously indexed Gaussian fields and discretely indexed Gaussian Markov random fields leading to significantly simpler model-fitting. The former paper lays the foundation of the integrated nested Laplace approximation approach for latent Gaussian models permitting the fitting of complex methods quickly and accurately, which has revolutionised the area of spatial statistics, and has been applied to areas ranging from gene expression to public health.

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