Dear all,
Those at Nikhef, please attend this seminar. Gilles was working at CERN previously and did a lot of developments together with LHCb people.
Cheers,
Patrick
-------- Forwarded Message -------- Subject: [Colloquium] Nikhef colloquium announcement Date: Wed, 27 Sep 2017 08:36:45 +0200 From: Wijnanda de Haan wdehaan@nikhef.nl To: Colloquium colloquium@nikhef.nl
Nikhef colloquium ------------------
title :"Teaching machines to discover particles" speaker :Dr. Gilles Louppe (NYU) date : Friday 29th September 2017 place : H331 (Nikhef) time : 11:00
summary:
Across many fields of science, computer simulators are used to describe complex data generation processes. These simulators relate observations to the parameters of an underlying theory or mechanistic model. In most cases, they are specified as procedural implementations of forward stochastic processes involving latent variables. Rarely do these simulators admit a tractable density or likelihood function, thereby making inference difficult. The prevalence and significance of this problem has motivated an active research effort in so-called likelihood-free inference algorithms.
In this talk, we will discuss how likelihood-free inference has been carried for decades in particle physics and then expand to new methods from machine learning, including likelihood-ratio estimation through supervised learning [1] and adversarial variational optimization [2].
Building upon these algorithms, we will then discuss how artificial intelligence can enable the automation of the scientific method through the synergy of three powerful techniques: - Generic likelihood-free inference engines that enable statistical inference on the parameters of a theory that are implicitly defined by a simulator. - Sequential design algorithms (e.g., Bayesian optimization) that balance exploration and exploitation to efficiently optimize an expensive black box function. - Workflows that encapsulate scientific pipelines and extend the scope from reproducibility to reusability.
[1]https://arxiv.org/abs/1506.02169 [2]https://arxiv.org/abs/1707.07113
The Nikhef colloquiumcommittee Robert Fleischer en Panos Christakoglou
For the full list of (planned) colloquia please see the agenda http://indico.nikhef.nl/categoryDisplay.py?categId=5
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Patrick Koppenburg