English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The Beijing-Arizona Sky Survey (BASS) Data Release 3 (DR3) catalogue wasreleased in 2019, which contains the data from all BASS and the Mosaic z-bandLegacy Survey (MzLS) observations during 2015 January and 2019 March, about 200million sources. We cross-match BASS DR3 with spectral databases from the SloanDigital Sky Survey (SDSS) and the Large Sky Area Multi-object FiberSpectroscopic Telescope (LAMOST) to obtain the spectroscopic classes of knownsamples. Then, the samples are cross-matched with ALLWISE database. Based onoptical and infrared information of the samples, we use the XGBoost algorithmto construct different classifiers, including binary classification andmulticlass classification. The accuracy of these classifiers with the bestinput pattern is larger than 90.0 per cent. Finally, all selected sources inthe BASS DR3 catalogue are classified by these classifiers. The classificationlabel and probabilities for individual sources are assigned by differentclassifiers. When the predicted results by binary classification are the sameas multiclass classification with optical and infrared information, the numberof star, galaxy and quasar candidates is separately 12 375 838 (P_S>0.95), 18606 073 (P_G>0.95) and 798 928 (P_Q>0.95). For these sources without infraredinformation, the predicted results can be as a reference. Those candidates maybe taken as input catalogue of LAMOST, DESI or other projects for follow upobservation. The classified result will be of great help and reference forfuture research of the BASS DR3 sources.

Identification of BASS DR3 Sources as Stars, Galaxies and Quasars by XGBoost