Bayesian model selection with SOBER and BASQ

[YannickNoelStephanKuhn]

Description

This introduces an interface to use the Bayesian optimisation and model selection algorithms SOBER and BASQ. To introduce them, six examples showcasing their abilities on optimisation, parameterisation, model selection, and surrogate modelling are appended.

Fixes #228

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #).

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• Tests added that prove fix is effective or that feature works