Reveal hidden regularities in complex astronomical images - Adjacent Correlation Analysis

Physics has been transforming our view of nature for centuries. While combining our physical knowledge with computational approaches has allowed people to model the evolution of physical systems in great detail, understanding the emergence of patterns and structures is limited in comparison. Correlations between quantities is the most dependable approach to describe the relationship between different quantities. However, toward complex patterns, searching for correlations directly is often not practical as complexity often undermines correlations. We find that the key is to search for correlations from local regions and develop a new method, the adjacent correction analysis to extract such correlations. The correlation vectors exhibit remarkably regular patterns and may often lead to the discovery of new laws. The vectors we derive are equivalence to the vector field in dynamical systems. By efficiently representing spatial patterns, our approach opens up venues for classification, prediction, parameter fitting, and forecast.

Speaker: 
Guangxing Li(South-Western Institute For Astronomy Research, YNU)
Place: 
KIAA-auditorium
Host: 
Jing Wang
Time: 
Thursday, March 20, 2025 - 3:30PM to Thursday, March 20, 2025 - 4:30PM
Biography: 
Associate Professor at Yunnan University (2018-), Postdoctoral fellow at the University of Munich, Germany (2014-2018), PhD at the Max Planck Institute for Radio Astronomy, Germany (2010-2014), Master of Astrophysics at the University of Science and Technology of China (2007-2010), Bachelor of Electronics at Peking University (2003-2007). Research areas: interstellar medium, star formation, dynamical processes in astrophysics. Dynamical systems, data representation in machine learning