20 September 2019
Clermont-Ferrand
Europe/Paris timezone

Bayesian inference with black-box cosmological models

20 Sep 2019, 10:15
1h
Clermont-Ferrand

Clermont-Ferrand

Speaker

Dr Florent Leclercq (Imperial Centre for Inference and Cosmology, London)

Description

Large-scale astronomical surveys carry opportunities for testing physical theories about the origin and evolution of the Universe. Advancing the research frontier requires solving challenging and unique statistical problems, to unlock the information content of massive and complex data streams. In this talk, I will present recent methodological advances, aiming at fitting cosmological data with "black-box" numerical models. I will discuss two different solutions, depending on the scenario: Bayesian optimisation (BOLFI) and Taylor-expansion of the simulator (SELFI).

References:
http://arxiv.org/abs/1805.07152
http://arxiv.org/abs/1902.10149

Presentation Materials

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