Results 31 to 40 of about 185 (62)

Semi-supervised Learning for Photometric Supernova Classification

, 2011
We present a semi-supervised method for photometric supernova typing. Our approach is to first use the nonlinear dimension reduction technique diffusion map to detect structure in a database of supernova light curves and subsequently employ random forest
Breiman, Breiman, Breiman, Breiman, Chad M. Schafer, Chapelle, Coifman, Darren Homrighausen, Dovi Poznanski, Dubath, Falck, Freeman, Gong, Grimmett, Hastie, Homeier, Johnson, Joseph W. Richards, Kessler, Kessler, Kunz, Kuznetsova, Lafon, Newling, Nugent, Peter E. Freeman, Poznanski, Poznanski, Poznanski, Richards, Richards, Richards, Rodney, Ruppert, Sullivan, Wasserman   +35 more
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Computational statistics using the Bayesian Inference Engine

, 2012
This paper introduces the Bayesian Inference Engine (BIE), a general parallel, optimised software package for parameter inference and model selection. This package is motivated by the analysis needs of modern astronomical surveys and the need to organise
Babu, Berntsen, Feroz, Gelman, Gelman, Gelman, Geyer, Giakoumatos, Green, Gregory, Grubbs, Hastings, Hobson, Jeffreys, Kass, Kirkpatrick, Lewis, Lindley, Liu, Lu, Lu, Martin D. Weinberg, Metropolis, Neal, Neal, Newton, Pearson, Press, Price, Raftery, Robert, Skilling, Storn, Storn, Sérsic, Ter Braak, Verdinelli, Wall, Weinberg, Weinberg, Yoon   +40 more
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LSDCat: Detection and cataloguing of emission-line sources in integral-field spectroscopy datacubes

, 2017
We present a robust, efficient, and user-friendly algorithm for detecting faint emission-line sources in large integral-field spectroscopic datacubes together with the public release of the software package LSDCat (Line Source Detection and Cataloguing).
Herenz, Edmund Christian, Wisotzki, Lutz
core   +1 more source

It’s More Complicated Than You Think: A Forward Model to Infer the Recent Star Formation History, Bursty or Not, of Galaxy Populations

The Astrophysical Journal
Observations of the early Universe ( z  ≳ 4) with JWST reveal galaxy populations with a wide range of intrinsic luminosities and colors. Bursty star formation histories (SFHs), characterized by short-term fluctuations in the star formation rate (SFR ...
Emilie Burnham, Bingjie Wang, Joel Leja, Owen Gonzales, Jenny E. Greene, Kartheik G. Iyer, Abby Mintz, David J. Setton, Sarah Wellons, Rachel Bezanson, Olivia Curtis, Robert Feldmann, Tim B. Miller, Themiya Nanayakkara, Joshua S. Speagle, Katherine A. Suess, Guochao Sun   +16 more
doaj   +1 more source

Classification and Anomaly Detection for Astronomical Datasets

, 2012
This work develops two new statistical techniques for astronomical problems: a star / galaxy separator for the UKIRT Infrared Deep Sky Survey (UKIDSS) and a novel anomaly detection method for cross-matched astronomical datasets.
Henrion, Marc Yves Romain, Henrion, Marc Yves Romain   +1 more
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The Testbed for LISA Analysis Project

, 2006
The Testbed for LISA Analysis (TLA) Project aims to facilitate the development, validation and comparison of different methods for LISA science data analysis, by the broad LISA Science Community, to meet the special challenges that LISA poses.
Benacquista, Matthew J., Finn, Lee Samuel, Larson, Shane L., Rubbo, Louis J.   +3 more
core  

Exploiting Network Topology for Accelerated Bayesian Inference of Grain Surface Reaction Networks [PDF]

, 2020
In the study of grain-surface chemistry in the interstellar medium, there exists much uncertainty regarding the reaction mechanisms with few constraints on the abundances of grain-surface molecules.
Feeney, SM, Heyl, J, Holdship, J, Viti, S   +3 more
core  

Scientific data mining, integration, and visualization [PDF]

, 2002
This report summarises the workshop on Scientific Data Mining, Integration and Visualization (SDMIV) held at the e-Science Institute, Edinburgh (eSI[1] ) on 24-25 October 2002, and presents a set of recommendations arising from the discussion that took ...
Atkinson, Malcolm, Brodlie, Ken, Mann, Bob, Storkey, Amos, Williams, Christopher K. I., Williams, Roy   +5 more
core  

Arquitectura, técnicas y modelos para posibilitar la Ciencia de Datos en el Archivo de la Misión Gaia [PDF]

, 2018
Tesis inédita de la Universidad Complutense de Madrid, Facultad de Informática, Departamento de Arquitectura de Computadores y Automática, leída el 26/05/2017.The massive amounts of data that the world produces every day pose new challenges to modern ...
Tapiador de Pedro, Daniel
core   +1 more source

Gamma-Ray Burst Detection with Poisson-FOCuS and Other Trigger Algorithms [PDF]

We describe how a novel online change-point detection algorithm, called Poisson-FOCuS, can be used to optimally detect gamma-ray bursts within the computational constraints imposed by miniaturized satellites such as the upcoming HERMES-Pathfinder ...
Crupi R., Dilillo G., Eckley I. A., Evangelista Y., Fearnhead P., Fiore F., Vacchi A., Ward K.   +7 more
core   +1 more source