Moritz Münchmeyer (UW Madison) – AI+Science Schmidt Fellows Speaker Series
Organized by the University of Chicago’s Eric and Wendy Schmidt AI in Science Postdoctoral Fellowship Program.
AI+Science Schmidt Fellows Speaker Series: Moritz Münchmeyer
Probing the Universe with AI – Probabilistic Machine Learning in Cosmology
Agenda
4:30pm – 5:15pm: Presentation
5:15pm – 5:30pm: Q&A
5:30pm – 6:00pm: Reception
Meeting location
William Eckhardt Research Center. Room 401
5640 S Ellis Avenue, Chicago, IL 60637
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Cosmological observations provide a unique window into fundamental physics, such as the physics of the primordial universe. Upcoming galaxy surveys and Cosmic Microwave Background surveys will produce vast amounts of data, but the extraction of fundamental physics from high-resolution data will be difficult due to the complexity of the evolution of the universe on small scales. Machine learning, with its ability to model highly non-linear processes, may be the key to overcoming this problem.
In this talk I will focus on machine learning techniques that can model the matter and gas distribution of the universe probabilistically. I will show how normalizing flows can be trained to de-noise cosmological data, and how diffusion models can be used to overcome computational challenges of high-resolution simulations. A key difficulty of using machine learning in cosmology is the problem of baryonic feedback, which appears as an uncertainty in the training data. I will also show how this problem can be overcome in some cases by combining analytic methods with the statistical precision of neural networks.
Moritz Münchmeyer: Assistant Professor of Physics at University of Wisconsin-Madison: Mortiz is an astrophysicist working at the interface of cosmological theory and data analysis. He is interested both in fundamental theory (physics with pen and paper) and in modern data analysis techniques (physics with supercomputers). All knowledge is fundamentally derived from data, and finding new ways to analyse data, or finding new questions to ask to it, can lead to unexpected insights and discoveries. Besides physics, Moritz is also passionate about machine learning and artificial intelligence. He is a Co-Founder of www.wolution.com which provides deep learning based scientific image analysis. More information can be found about his projects at www.moritzmunchmeyer.com.
Parking
Campus North Parking
5505 S Ellis Ave
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