Deep-learnt classification of light curves

Publikation: Bidrag til bog/antologi/rapportKonferencebidrag i proceedingsForskningfagfællebedømt

  • Ashish Mahabal
  • Fabian Gieseke
  • Akshay Sadananda Uppinakudru Pai
  • S G Djorgovski
  • A J Drake
  • M J Graham
  • CSS/CRTS/PTF Teams
Astronomy light curves are sparse, gappy, and heteroscedastic. As a result standard time series methods regularly used for financial and similar datasets are of little help and astronomers are usually left to their own instruments and techniques to classify light curves. A common approach is to derive statistical features from the time series and to use machine learning methods, generally supervised, to separate objects into a few of the standard classes. In this work, we transform the time series to two-dimensional light curve representations in order to classify them using modern deep learning techniques. In particular, we show that convolutional neural networks based classifiers work well for broad characterization and classification. We use labeled datasets of periodic variables from CRTS survey and show how this opens doors for a quick classification of diverse classes with several possible exciting extensions.
OriginalsprogEngelsk
Titel2017 IEEE Symposium Series on Computational Intelligence (SSCI) Proceedings
Antal sider8
ForlagIEEE
Publikationsdato2017
Sider1-8
ISBN (Elektronisk)978-1-5386-2726-6
DOI
StatusUdgivet - 2017
Begivenhed2017 IEEE Symposium Series on Computational Intelligence (SSCI) - Honolulu, USA
Varighed: 27 nov. 20171 dec. 2017

Konference

Konference2017 IEEE Symposium Series on Computational Intelligence (SSCI)
LandUSA
ByHonolulu
Periode27/11/201701/12/2017

ID: 195160567