11 December 2015
Etc/GMT-5 timezone

An alternative to ABC for likelihood-free inference

11 Dec 2015, 16:30



Kyle Stuart Cranmer (New York University (US))


The field of particle physics has the luxury of very predictive models of the data based on quantum field theory; however, the simulation of a complicated experimental apparatus makes it impractical to directly evaluate the likelihood for a given observation. A popular approach to this class of problems is Approximate Bayesian Computation (ABC). I will describe an alternative technique for parameter inference in this “likelihood-free” setting that is based on a parametrized family of classifiers and univariate density estimation. I will end with examples where this technique is being applied to problems at the LHC.

Presentation Materials