ASTROMER: A transformer-based embedding for the representation of light curves

no code implementations • 2 May 2022 • C. Donoso-Oliva, I. Becker, P. Protopapas, G. Cabrera-Vives, Vishnu M., Harsh Vardhan

We used millions of R-band light sequences to adjust the ASTROMER weights.

The effect of phased recurrent units in the classification of multiple catalogs of astronomical lightcurves

1 code implementation • 7 Jun 2021 • C. Donoso-Oliva, G. Cabrera-Vives, P. Protopapas, R. Carrasco-Davis, P. A. Estevez

In this work, we study the effectiveness of the LSTM and Phased LSTM based architectures for the classification of astronomical lightcurves.

Time Series Time Series Analysis

Alert Classification for the ALeRCE Broker System: The Light Curve Classifier

2 code implementations • 7 Aug 2020 • P. Sánchez-Sáez, I. Reyes, C. Valenzuela, F. Förster, S. Eyheramendy, F. Elorrieta, F. E. Bauer, G. Cabrera-Vives, P. A. Estévez, M. Catelan, G. Pignata, P. Huijse, D. De Cicco, P. Arévalo, R. Carrasco-Davis, J. Abril, R. Kurtev, J. Borissova, J. Arredondo, E. Castillo-Navarrete, D. Rodriguez, D. Ruz-Mieres, A. Moya, L. Sabatini-Gacitúa, C. Sepúlveda-Cobo

The ALeRCE light curve classifier uses variability features computed from the ZTF alert stream, and colors obtained from AllWISE and ZTF photometry.

Instrumentation and Methods for Astrophysics Astrophysics of Galaxies High Energy Astrophysical Phenomena Solar and Stellar Astrophysics