Machine Learning for Searching the Dark Energy Survey for Trans-Neptunian Objects
Machine Learning for Searching the Dark Energy Survey for Trans-Neptunian Objects
复制标题
用于搜索海王星外天体暗能量巡天的机器学习
DOI:
10.1088/1538-3873/abcaea
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发表时间:
2020
影响因子:
3.5
通讯作者:
Henghes B
中科院分区:
文献类型:
--
作者:
Henghes B
In this paper we investigate how implementing machine learning could improve the efficiency of the search for Trans-Neptunian Objects (TNOs) within Dark Energy Survey (DES) data when used alongside orbit fitting. The discovery of multiple TNOs that appear to show a similarity in their orbital parameters has led to the suggestion that one or more undetected planets, an as yet undiscovered" Planet 9", may be present in the outer solar system. DES is well placed to detect such a planet and has already been used to discover many other TNOs. Here, we perform tests on eight different supervised machine learning algorithms, using a data set consisting of simulated TNOs buried within real DES noise data. We found that the best performing classifier was the Random Forest which, when optimized, performed well at detecting the rare objects. We achieve an area under the receiver operating characteristic (ROC) curve,(AUC)= 0.996±0.001. After optimizing the decision threshold of the Random Forest, we achieve a recall of 0.96 while maintaining a precision of 0.80. Finally, by using the optimized classifier to pre-select objects, we are able to run the orbit-fitting stage of our detection pipeline five times faster.
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DOI:
10.3847/1538-3881/153/1/27
发表时间:
2016
期刊:
The Astronomical Journal
影响因子:
--
作者:
R. Gomes;R. Deienno;A. Morbidelli
通讯作者:
A. Morbidelli
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
C. Shankman;J. Kavelaars;M. Bannister;B. Gladman;S. Lawler;Ying;M. Jakubik;N. Kaib;M. Alexandersen;S. Gwyn;J. Petit;K. Volk
通讯作者:
K. Volk
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
J. Galle
通讯作者:
J. Galle
DOI:
--
发表时间:
2012
期刊:
--
影响因子:
--
作者:
Shay B. Cohen;Michael Collins
通讯作者:
Shay B. Cohen;Michael Collins
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
M. Brown
通讯作者:
M. Brown