[Theory-seminars] Theory seminar next week

[Astrid Hiller Blin]

Dear all,

Here is the information about next week's theory seminar (note the unusual
time):

*Theory seminar*
Monday November 23, *9:00 AM*

*Johann Brehmer* (New York University) will talk about "How machine
learning can help us get the most out of high-precision particle physics
models".

*Abstract:*

Particle physics processes are usually modeled with a chain of complex
simulators. While these allow us to generate high-quality simulated data,
they face a challenging inverse problem when we want to infer theory
parameters from observed data. I will explain why the relevant likelihood
function cannot be evaluated, why that is a problem, discuss how particle
physicists have circumvented it in the past, and introduce the framing of
simulation-based inference. I will then show how we can use machine
learning together with matrix-element information to solve it efficiently.
Finally I will discuss how the same techniques can be useful in many other
scientific fields from neuroscience to strong gravitational lensing.

Bluejeans connection: https://bluejeans.com/801786278
<https://urldefense.proofpoint.com/v2/url?u=https-3A__bluejeans.com_801786278&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=AIMSQQ81YDyrZuJNGks2qw&m=aT_3J5jjiFmHtFXffqbfPqEY_A73NEWw2ebyFyL_eCA&s=YNm3qgT5e8sJgKfZ9vFA_w--imuXwmeAjg0C4AslLwg&e=>

Best wishes,
Astrid, Christos, Filippo
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