| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21c.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34R/44MMSGL | |||
| Repository | sid.inpe.br/mtc-m21c/2021/05.17.14.54 | |||
| Last Update | 2021:05.17.14.54.03 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21c/2021/05.17.14.54.03 | |||
| Metadata Last Update | 2022:04.03.19.24.43 (UTC) administrator | |||
| DOI | 10.22201/IA.01851101P.2021.57.01.07 | |||
| ISSN | 0185-1101 | |||
| Citation Key | SoltauBott:2021:PeDeAG | |||
| Title | Periodicity detection in AGN with the boosted tree method  | |||
| Year | 2021 | |||
| Access Date | 2024, May 19 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 5350 KiB | |||
| 2. Context | ||||
| Author | 1 Soltau, S. B. 2 Botti, Luiz Cláudio Lima | |||
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JHN7 | |||
| ORCID | 1 0000-0002-7211-2533 2 0000-0003-1424-0796 | |||
| Group | 1 2 DIAST-CGCE-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Universidade Federal de Alfenas (UNIFENAS) 2 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 2 luizquas@yahoo.com.br | |||
| Journal | Revista Mexicana de Astronomía y Astrofísica | |||
| Volume | 57 | |||
| Number | 1 | |||
| Pages | 107-122 | |||
| Secondary Mark | B1_ASTRONOMIA_/_FÍSICA | |||
| History (UTC) | 2021-05-17 14:54:03 :: simone -> administrator :: 2021-05-17 14:54:05 :: administrator -> simone :: 2021 2021-05-17 14:54:46 :: simone -> administrator :: 2021 2022-04-03 19:24:43 :: administrator -> simone :: 2021 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Keywords | galaxies: active — galaxies: BL Lacertae objects: general — galaxies: quasars: general — methods: data analysis — methods: numerical | |||
| Abstract | We apply a machine learning algorithm called XGBoost to explore the periodicity of two radio sources: PKS 1921-293 (OV 236) and PKS 2200+420 (BL Lac), both radio frequency datasets obtained from University of Michigan Radio Astronomy Observatory (UMRAO), at 4.8 GHz, 8.0 GHz, and 14.5 GHz, between 1969 to 2012. From this methods, we find that the XGBoost provides the opportunity to use a machine learning based methodology on radio datasets and to extract information with strategies quite different from those traditionally used to treat time series, as well as to obtain periodicity through the classification of recurrent events. The results were compared with other methods that examined the same datasets and exhibit a good agreement with them. RESUMEN: Aplicamos un algoritmo de aprendizaje autom´atico llamado XGBoost para explorar la periodicidad de dos fuentes de radio: PKS 1921-293 (OV 236) y PKS 2200+420 (BL Lac), ambos conjuntos de datos de radiofrecuencia obtenidos del Observatorio de Radio Astronom´ıa de la Universidad de Michigan (UMRAO), a 4.8 GHz, 8.0 GHz, y 14.5 GHz, entre 1969 y 2012. A partir de estos m´etodos, encontramos que XGBoost brinda la oportunidad de utilizar una metodolog´ıa basada en aprendizaje autom´atico en el conjunto de datos de radio y extraer informaci´on con estrategias bastante diferentes de las utilizadas tradicionalmente para tratar series temporales y obtener periodicidad a trav´es de la clasificaci´on de eventos recurrentes. Los resultados se compararon con los obtenidos en otros trabajos que examinaron el mismo conjunto de datos y muestraron resultados compatibles. | |||
| Area | CEA | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCE > Periodicity detection in... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://mtc-m21c.sid.inpe.br/ibi/8JMKD3MGP3W34R/44MMSGL | |||
| zipped data URL | http://mtc-m21c.sid.inpe.br/zip/8JMKD3MGP3W34R/44MMSGL | |||
| Language | en | |||
| Target File | soltau_2021.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Archiving Policy | allowpublisher allowfinaldraft | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/46KTFK8 | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.54.14 1 | |||
| Dissemination | WEBSCI; PORTALCAPES; SCIELO; SCOPUS. | |||
| Host Collection | urlib.net/www/2017/11.22.19.04 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository month nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project readpermission rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||