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ISINA : INTEGRAL source identification network algorithm

ISINA : INTEGRAL source identification network algorithm
ISINA : INTEGRAL source identification network algorithm
We give an overview of ISINA: INTEGRAL Source Identification Network Algorithm. This machine learning algorithm, using random forests, is applied to the IBIS/ISGRI data set in order to ease the production of unbiased future soft gamma-ray source catalogues. First, we introduce the data set and the problems encountered when dealing with images obtained using the coded mask technique. The initial step of source candidate searching is introduced and an initial candidate list is created. A description of the feature extraction on the initial candidate list is then performed together with feature merging for these candidates. Three training and testing sets are created in order to deal with the diverse time-scales encountered when dealing with the gamma-ray sky. Three independent random forests are built: one dealing with faint persistent source recognition, one dealing with strong persistent sources and a final one dealing with transients. For the latter, a new transient detection technique is introduced and described: the transient matrix. Finally the performance of the network is assessed and discussed using the testing set and some illustrative source examples.
methods: data analysis, catalogues, surveys
0035-8711
1339-1348
Scaringi, Simone
88701970-a1b9-41fe-bf55-886716ee3374
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Clark, D.J.
4d37cdbe-d8f5-47c6-a135-7950843def36
Dean, A.J.
2f9093f2-855c-4769-b1aa-6dd621b5dcf1
Hill, A.B.
b1007941-b5b1-47cd-8476-7c6b9c57f347
McBride, V.A.
a4608811-5a3f-4218-ada0-28f57ec2a0fd
Shaw, S.E.
65776027-991a-45ae-8338-e1c73909ce64
Scaringi, Simone
88701970-a1b9-41fe-bf55-886716ee3374
Bird, A.J.
045ee141-4720-46fd-a412-5aa848a91b32
Clark, D.J.
4d37cdbe-d8f5-47c6-a135-7950843def36
Dean, A.J.
2f9093f2-855c-4769-b1aa-6dd621b5dcf1
Hill, A.B.
b1007941-b5b1-47cd-8476-7c6b9c57f347
McBride, V.A.
a4608811-5a3f-4218-ada0-28f57ec2a0fd
Shaw, S.E.
65776027-991a-45ae-8338-e1c73909ce64

Scaringi, Simone, Bird, A.J., Clark, D.J., Dean, A.J., Hill, A.B., McBride, V.A. and Shaw, S.E. (2008) ISINA : INTEGRAL source identification network algorithm. Monthly Notices of the Royal Astronomical Society, 390 (4), 1339-1348. (doi:10.1111/j.1365-2966.2008.13765.x).

Record type: Article

Abstract

We give an overview of ISINA: INTEGRAL Source Identification Network Algorithm. This machine learning algorithm, using random forests, is applied to the IBIS/ISGRI data set in order to ease the production of unbiased future soft gamma-ray source catalogues. First, we introduce the data set and the problems encountered when dealing with images obtained using the coded mask technique. The initial step of source candidate searching is introduced and an initial candidate list is created. A description of the feature extraction on the initial candidate list is then performed together with feature merging for these candidates. Three training and testing sets are created in order to deal with the diverse time-scales encountered when dealing with the gamma-ray sky. Three independent random forests are built: one dealing with faint persistent source recognition, one dealing with strong persistent sources and a final one dealing with transients. For the latter, a new transient detection technique is introduced and described: the transient matrix. Finally the performance of the network is assessed and discussed using the testing set and some illustrative source examples.

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More information

Accepted/In Press date: 23 July 2008
e-pub ahead of print date: 27 October 2008
Published date: November 2008
Keywords: methods: data analysis, catalogues, surveys

Identifiers

Local EPrints ID: 144795
URI: http://eprints.soton.ac.uk/id/eprint/144795
ISSN: 0035-8711
PURE UUID: 8fd1082d-b9ad-482f-9a9f-6abe9e0b6c56
ORCID for A.J. Bird: ORCID iD orcid.org/0000-0002-6888-8937
ORCID for A.B. Hill: ORCID iD orcid.org/0000-0003-3470-4834

Catalogue record

Date deposited: 25 May 2010 11:52
Last modified: 09 Nov 2021 03:08

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Contributors

Author: Simone Scaringi
Author: A.J. Bird ORCID iD
Author: D.J. Clark
Author: A.J. Dean
Author: A.B. Hill ORCID iD
Author: V.A. McBride
Author: S.E. Shaw

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