INAF - Astronomical Observatory of Padova

INAF - Astronomical Observatory of Padova is one of the main structures of the National Institute of Astrophysics (INAF). The main activity of the Observatory is to perform scientific research in various  fields of Astrophysics. The Observatory also contributes to  advanced education, assists in the dissemination of knowledge and implements project of education and outreach of Astronomy.

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INAF - Osservatorio Astronomico di Padova


Seminario Dr. Julian Merten
24.01.2019 - 24.01.2019
Aula L. Rosino - Dipartimento di Fisica ed Astrono - Padova



Giovedi 24 Gennaio 2019, h. 11:30 
 Aula L. Rosino Dipartimento di Fisica e Astronomia

  Julian Merten 

   INAF - OAS, Bologna

 Cosmological applications of machine learning


With the ever-increasing data volumes associated with upcoming astronomical surveys and numerical simulations, machine learning has become an attractive framework to not only handle, but optimally exploit all the information in such data. Especially deep learning techniques provide a unique way of describing data in a particularly flexible --data-driven-- way by constructing complex models from a deep chain of simple mathematical operations. In my presentation, I will provide a concise introduction to machine and deep learning and go through a number of applications in the field of cosmology. We will use large computer vision data vectors, convolutional neural networks and a number of different classifiers, including fully-connected neural network, to characterise weak lensing mass maps. In the time-domain we will apply long short-term memory networks to filter radio frequency interference from 21cm radio data and close with a look into the exciting field of generative models as a particular cheap way to produce Mock data. Different forms of generative adversarial networks are deployed in order to create an arbitrary number of galaxy images and galaxy cluster realisations by learning their principal representation from given training sets. 


Aula L. Rosino - Dipartimento di Fisica ed Astrono
vicolo dell'Osservatorio 2


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