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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
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J/MNRAS/503/5263
  Sorting of 4XMM-DR9 sources by machine learning (Zhang+, 2021)
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2021MNRAS.503.5263Z
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Post annotation 		img(gal)
1.J/MNRAS/503/5263/table10predicted results of machine learning classifications of 4XMM-DR9 sources (550124 rows) (released 2024-11-06)
[METAtab] [METAcola]

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - ) [METAcola]
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  Source  Source ID (scrid) (meta.id;meta.main)
  RAJ2000 deg (i) Right ascension in decimal degrees (sc_ra) (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Declination in decimal degrees (sc_dec) (J2000) (pos.eq.dec;meta.main)
  ClassX (char) Source classification for the first classifier machine learning method (rotation-forest classifier X-ray information only) (Class_x) (meta.code.class)
  PX  The classification probabilities deducted for sources that only have the X-ray band (P_x) (stat.fit.goodness)
  ClassXO (char) Source classification for the third classifier machine learning method (LogitBoost classifiers X-ray and optical bands information only) (Class_xo) (meta.code.class)
  PXO  (n) The classification probabilities deducted for source that only have the X-ray and optical bands (P_xo) (stat.fit.goodness)
  ClassXI (char) Source classification for the second classifier machine learning method (random-forest classifier X-ray and infrared bands information only) (Class_xi) (meta.code.class)
  PXI  (n) The classification probabilities deducted for sources that only have the X-ray and infrared bands (P_xi) (stat.fit.goodness)
  ClassXIO (char) Source classification for the fourth classifier machine learning method (LogitBoost classifiers X-ray, optical and infrared bands information only) (Class_xio) (meta.code.class)
  PXIO  (n) The classification probabilities deducted for sources that have X-ray, optical and infrared bands (P_xio) (stat.fit.goodness)

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(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  
.errorfile=/tmp/V-0.err (2025-08-23T18:00:33)
-2
-source=75035263
-ref=VIZ68aa01c12b98d1
elapse time 0

Options: wopt=0, optS=0, onote=0, opt1=8, opos=0

Contents of error file (/tmp/V-0.err):
[1755972033]   Select famid, name, explain From METAfam where famid=1351
----db1_reset(0 'metaviz@VIZIR')
----inherit(u=used, h=hidden):
     [u] +source=75035263
     [u] -ref=VIZ68aa01c12b98d1
====inherit(): added 0 hidden fields
----free temporary files
----db1_close(0 'metaviz@VIZIR')
----db1_close(1 'metaviz@VIZIR')
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