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The large sky localization regions offered by the gravitational-wave interferometers require efficient follow-up of the many counterpart candidates identified by the wide field-of-view telescopes. Given the restricted telescope time, the…

High Energy Astrophysical Phenomena · Physics 2020-07-01 Cosmin Stachie , Michael W. Coughlin , Nelson Christensen , Daniel Muthukrishna

We present a sample of 14 hydrogen-rich superluminous supernovae (SLSNe II) from the Zwicky Transient Facility (ZTF) between 2018 and 2020. We include all classified SLSNe with peaks $M_{g}<-20$ mag and with observed \emph{broad} but not…

Substantial effort has been devoted to the characterization of transient phenomena from photometric information. Automated approaches to this problem have taken advantage of complete phase-coverage of an event, limiting their use for…

Instrumentation and Methods for Astrophysics · Physics 2023-07-06 Alexander Gagliano , Gabriella Contardo , Daniel Foreman-Mackey , Alex I. Malz , Patrick D. Aleo

In modern astrophysics, the machine learning has increasingly gained more popularity with its incredibly powerful ability to make predictions or calculated suggestions for large amounts of data. We describe an application of the supervised…

Astrophysics of Galaxies · Physics 2018-12-26 Yu Bai , JiFeng Liu , Song Wang , Fan Yang

The ability to discover new transients via image differencing without direct human intervention is an important task in observational astronomy. For these kind of image classification problems, machine Learning techniques such as…

Instrumentation and Methods for Astrophysics · Physics 2022-09-09 Venkitesh Ayyar , Robert Knop , Autumn Awbrey , Alexis Andersen , Peter Nugent

We propose a new strategy of finding strongly-lensed supernovae (SNe) by monitoring known galaxy-scale strong-lens systems. Strongly lensed SNe are potentially powerful tools for the study of cosmology, galaxy evolution, and stellar…

Astrophysics of Galaxies · Physics 2018-09-19 Yiping Shu , Adam S. Bolton , Shude Mao , Xi Kang , Guoliang Li , Monika Soraisam

The development of synoptic sky surveys has led to a massive amount of data for which resources needed for analysis are beyond human capabilities. To process this information and to extract all possible knowledge, machine learning…

Computational Engineering, Finance, and Science · Computer Science 2015-05-29 Isadora Nun , Karim Pichara , Pavlos Protopapas , Dae-Won Kim

This article proposes a novel density estimation based algorithm for carrying out supervised machine learning. The proposed algorithm features O(n) time complexity for generating a classifier, where n is the number of sampling instances in…

Machine Learning · Statistics 2007-11-06 Yen-Jen Oyang , Chien-Yu Chen , Darby Tien-Hao Chang , Chih-Peng Wu

We report new high-quality galaxy scale strong lens candidates found in the Kilo Degree Survey data release 4 using Machine Learning. We have developed a new Convolutional Neural Network (CNN) classifier to search for gravitational arcs,…

In preparation for photometric classification of transients from the Legacy Survey of Space and Time (LSST) we run tests with different training data sets. Using estimates of the depth to which the 4-metre Multi-Object Spectroscopic…

Instrumentation and Methods for Astrophysics · Physics 2021-09-27 Jonathan E. Carrick , Isobel M. Hook , Elizabeth Swann , Kyle Boone , Chris Frohmaier , Alex G. Kim , Mark Sullivan

In this work, we propose a deep learning-based classification model of astronomical objects using alerts reported by the Zwicky Transient Facility (ZTF) survey. The model takes as inputs sequences of stamp images and metadata contained in…

Instrumentation and Methods for Astrophysics · Physics 2024-05-27 Daniel Neira O. , Pablo A. Estévez , Francisco Förster

Data driven generative machine learning models have recently emerged as one of the most promising approaches for new materials discovery. While the generator models can generate millions of candidates, it is critical to train fast and…

Materials Science · Physics 2021-12-14 Daniel Gleaves , Edirisuriya M. Dilanga Siriwardane , Yong Zhao , Nihang Fu , Jianjun Hu

With the upcoming large-scale surveys like LSST, we expect to find approximately $10^5$ strong gravitational lenses among data of many orders of magnitude larger. In this scenario, the usage of non-automated techniques is too time-consuming…

Astrophysics of Galaxies · Physics 2024-03-20 Hareesh Thuruthipilly , Margherita Grespan , Adam Zadrożny

In the last decades, the capacity to generate large amounts of data in science and engineering applications has been growing steadily. Meanwhile, machine learning has progressed to become a suitable tool to process and utilise the available…

Machine Learning · Computer Science 2024-09-04 Alex Hernandez-Garcia , Nikita Saxena , Moksh Jain , Cheng-Hao Liu , Yoshua Bengio

The Zwicky Transient Facility (ZTF), a state-of-the-art optical robotic sky survey, registers on the order of a million transient events - such as supernova explosions, changes in brightness of variable sources, or moving object detections…

Instrumentation and Methods for Astrophysics · Physics 2021-11-25 Dmitry A. Duev , Stéfan J. van der Walt

We present recent results from the Laboratory for Cosmological Data Mining (http://lcdm.astro.uiuc.edu) at the National Center for Supercomputing Applications (NCSA) to provide robust classifications and photometric redshifts for objects in…

Astrophysics · Physics 2007-10-25 Nicholas M. Ball , Robert J. Brunner , Adam D. Myers

Active Learning is a very common yet powerful framework for iteratively and adaptively sampling subsets of the unlabeled sets with a human in the loop with the goal of achieving labeling efficiency. Most real world datasets have imbalance…

Computer Vision and Pattern Recognition · Computer Science 2022-06-20 Suraj Kothawade , Shivang Chopra , Saikat Ghosh , Rishabh Iyer

Machine Learning methods will play a fundamental role in our ability to optimize the science output from the next generation of large scale surveys. Given the peculiarities of astronomical data, it is crucial that algorithms are adapted to…

Instrumentation and Methods for Astrophysics · Physics 2019-08-08 Emille E. O. Ishida

Supernova (SN) siblings -- two or more SNe in the same parent galaxy -- are useful tools for exploring progenitor stellar populations as well as properties of the host galaxies such as distance, star formation rate, dust extinction, and…