How to quantify textures and random fields in astrophysics?

Abstract:
Extracting information from stochastic fields is a ubiquitous task in science. However, from cosmology to biology, it tends to be done either through a power spectrum analysis, which is often too limited, or the use of neural networks, which require large training sets and lack interpretability.
I will present a new powerful tool called the “scattering transform” which stands nicely between the two extremes, and recent updates to extend this idea. I will use various examples in astrophysics and beyond to demonstrate its power, interpretability, and its advantage over traditional statistics.


Speaker: 
Dr. Sihao Cheng, Institute for Advanced Study at Princeton and Perimeter Institute
Place: 
Shu Qi meeting room
Time: 
Tuesday, December 26, 2023 - 1:30PM to Tuesday, December 26, 2023 - 2:30PM