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Data: 06/07/2017 (quinta-feira)
Local: B-144 INSTITUTO DE MATEMÁTICA E ESTATÍSTICA – U S P
Dr. Rafael S. de Souza
Data-Scientist and Astrostatistician
Vice-President International Astrostatistics Association
Chair Cosmostatistics Initiative
Author Bayesian Models for Astrophysical Data
Visiting Professor University of Sao Paulo
Researcher Eötvös Loránd University
Interdisciplinary endeavors and data challenges in 21st century astronomy — the rise of Astrostatistics and Astroinformatics
Astronomical development has always been connected with, and sometimes dependent on, technological innovation. The technological difficulties associated with the observational process lead the field to evolve around the study of a few, well observed, objects. This paradigm has shifted completely in the last two or three decades with the advent of large scale surveys. In this new scenario, traditional approaches to data analysis in a case by case basis are no longer feasible. Astronomy is reinventing itself through interdisciplinary collaborations with computer science and statistics leading the emergency of the new fields of Astrostatistics and Astroinformatics.
I will briefly describe one example of how this partnership developed. Using the Cosmostatistics Initiative (COIN) and the scientific challenges involving some of our projects, such as classification of astronomical transients via supervised and unsupervised learning, modeling of galaxy properties via generalized linear models and extensions, and likelihood-free estimate of cosmological parameters via approximate Bayesian computation.
Image: By NASA, ESA, the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration, and A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University) [Public domain], via Wikimedia Commons