Class information for:
Level 1: GALAXIES DISTANCES AND REDSHIFTS//METHODS DATA ANALYSIS//SPECTRAL LINE EXTRACTION

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
17431 600 30.3 61%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
19 4 ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 523489
8 3       ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 146114
0 2             GALAXIES EVOLUTION//ASTRONOMY & ASTROPHYSICS//MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 61580
17431 1                   GALAXIES DISTANCES AND REDSHIFTS//METHODS DATA ANALYSIS//SPECTRAL LINE EXTRACTION 600

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 GALAXIES DISTANCES AND REDSHIFTS authKW 313561 19% 5% 113
2 METHODS DATA ANALYSIS authKW 280567 30% 3% 178
3 SPECTRAL LINE EXTRACTION authKW 254455 1% 100% 5
4 ASTRONOMICAL SPECTRA authKW 229007 1% 75% 6
5 OBSERV BEIJING address 212044 1% 83% 5
6 STELLAR SPECTRAL CLASSIFICATION authKW 162850 1% 80% 4
7 STELLAR SPECTRA authKW 152661 2% 33% 9
8 METHODS STATISTICAL authKW 152040 18% 3% 107
9 AUTOMATED SPECTRAL CLASSIFICATION authKW 101782 0% 100% 2
10 CELESTIAL BODY SPECTRUM authKW 101782 0% 100% 2

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Astronomy & Astrophysics 23001 80% 0% 480
2 Spectroscopy 850 11% 0% 65
3 Computer Science, Artificial Intelligence 146 5% 0% 28
4 Computer Science, Theory & Methods 13 2% 0% 12
5 Computer Science, Interdisciplinary Applications 5 2% 0% 9
6 Operations Research & Management Science 1 1% 0% 5
7 Remote Sensing 1 0% 0% 2
8 Computer Science, Cybernetics 0 0% 0% 1
9 Engineering, Aerospace 0 0% 0% 2
10 Automation & Control Systems 0 1% 0% 3

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 OBSERV BEIJING 212044 1% 83% 5
2 FSICA ALTES ENERGIES 101782 0% 100% 2
3 NAVIGAT EARTH SCI 101782 0% 100% 2
4 AVANZADO COSMOL 50891 0% 100% 1
5 CASTROPER STR 67 50891 0% 100% 1
6 CNRS MODAL TEAM 50891 0% 100% 1
7 DEP NAVIGAT EARTH SCI 50891 0% 100% 1
8 DMIUNITA SALERNO 50891 0% 100% 1
9 ECNOD 50891 0% 100% 1
10 KAVLI PARTICLE PHYS ASTROPHYS COSMOL 50891 0% 100% 1

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 21111 23% 0% 135
2 SPECTROSCOPY AND SPECTRAL ANALYSIS 19114 10% 1% 62
3 PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 8686 5% 1% 30
4 ASTRONOMICAL JOURNAL 8175 8% 0% 48
5 ASTRONOMY AND COMPUTING 7942 1% 3% 5
6 CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7240 2% 1% 11
7 ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 5556 3% 1% 20
8 ASTROPHYSICAL JOURNAL 3004 12% 0% 69
9 RESEARCH IN ASTRONOMY AND ASTROPHYSICS 2929 1% 1% 8
10 ASTRONOMY & ASTROPHYSICS 2875 9% 0% 54

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 GALAXIES DISTANCES AND REDSHIFTS 313561 19% 5% 113 Search GALAXIES+DISTANCES+AND+REDSHIFTS Search GALAXIES+DISTANCES+AND+REDSHIFTS
2 METHODS DATA ANALYSIS 280567 30% 3% 178 Search METHODS+DATA+ANALYSIS Search METHODS+DATA+ANALYSIS
3 SPECTRAL LINE EXTRACTION 254455 1% 100% 5 Search SPECTRAL+LINE+EXTRACTION Search SPECTRAL+LINE+EXTRACTION
4 ASTRONOMICAL SPECTRA 229007 1% 75% 6 Search ASTRONOMICAL+SPECTRA Search ASTRONOMICAL+SPECTRA
5 STELLAR SPECTRAL CLASSIFICATION 162850 1% 80% 4 Search STELLAR+SPECTRAL+CLASSIFICATION Search STELLAR+SPECTRAL+CLASSIFICATION
6 STELLAR SPECTRA 152661 2% 33% 9 Search STELLAR+SPECTRA Search STELLAR+SPECTRA
7 METHODS STATISTICAL 152040 18% 3% 107 Search METHODS+STATISTICAL Search METHODS+STATISTICAL
8 AUTOMATED SPECTRAL CLASSIFICATION 101782 0% 100% 2 Search AUTOMATED+SPECTRAL+CLASSIFICATION Search AUTOMATED+SPECTRAL+CLASSIFICATION
9 CELESTIAL BODY SPECTRUM 101782 0% 100% 2 Search CELESTIAL+BODY+SPECTRUM Search CELESTIAL+BODY+SPECTRUM
10 CELESTIAL SPECTRUM 101782 0% 100% 2 Search CELESTIAL+SPECTRUM Search CELESTIAL+SPECTRUM

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref. in
cl.		 Shr. of ref. in
cl.		 Citations
1 BRUNNER, RJ , BALL, NM , (2010) DATA MINING AND MACHINE LEARNING IN ASTRONOMY.INTERNATIONAL JOURNAL OF MODERN PHYSICS D. VOL. 19. ISSUE 7. P. 1049 -1106 100 52% 45
2 KIND, MC , BRUNNER, RJ , (2013) TPZ: PHOTOMETRIC REDSHIFT PDFS AND ANCILLARY INFORMATION BY USING PREDICTION TREES AND RANDOM FORESTS.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 432. ISSUE 2. P. 1483-1501 29 48% 42
3 ZITLAU, R , HOYLE, B , PAECH, K , WELLER, J , RAU, MM , SEITZ, S , (2016) STACKING FOR MACHINE LEARNING REDSHIFTS APPLIED TO SDSS GALAXIES.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 460. ISSUE 3. P. 3152 -3162 21 66% 1
4 ZHANG, YX , LI, LL , ZHAO, YH , (2009) MORPHOLOGY CLASSIFICATION AND PHOTOMETRIC REDSHIFT MEASUREMENT OF GALAXIES.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 392. ISSUE 1. P. 233 -239 23 74% 4
5 SADEH, I , ABDALLA, FB , LAHAV, O , (2016) ANNZ2: PHOTOMETRIC REDSHIFT AND PROBABILITY DISTRIBUTION FUNCTION ESTIMATION USING MACHINE LEARNING.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC. VOL. 128. ISSUE 968. P. - 23 62% 0
6 BONNETT, C , (2015) USING NEURAL NETWORKS TO ESTIMATE REDSHIFT DISTRIBUTIONS. AN APPLICATION TO CFHTLENS.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 449. ISSUE 1. P. 1043 -1056 21 54% 13
7 WANG, D , ZHANG, YX , LIU, C , ZHAO, YH , (2008) TWO NOVEL APPROACHES FOR PHOTOMETRIC REDSHIFT ESTIMATION BASED ON SDSS AND 2MASS.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS. VOL. 8. ISSUE 1. P. 119-126 21 75% 12
8 BALL, NM , BRUNNER, RJ , MYERS, AD , STRAND, NE , ALBERTS, SL , TCHENG, D , (2008) ROBUST MACHINE LEARNING APPLIED TO ASTRONOMICAL DATA SETS. III. PROBABILISTIC PHOTOMETRIC REDSHIFTS FOR GALAXIES AND QUASARS IN THE SDSS AND GALEX.ASTROPHYSICAL JOURNAL. VOL. 683. ISSUE 1. P. 12-21 27 53% 33
9 LIU, ZB , (2016) STELLAR SPECTRAL CLASSIFICATION WITH LOCALITY PRESERVING PROJECTIONS AND SUPPORT VECTOR MACHINE.JOURNAL OF ASTROPHYSICS AND ASTRONOMY. VOL. 37. ISSUE 2. P. - 14 88% 0
10 ALMOSALLAM, IA , LINDSAY, SN , JARVIS, MJ , ROBERTS, SJ , (2016) A SPARSE GAUSSIAN PROCESS FRAMEWORK FOR PHOTOMETRIC REDSHIFT ESTIMATION.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 455. ISSUE 3. P. 2387 -2401 19 58% 1

Classes with closest relation at Level 1


Rank Class id link
1 30771 ULTRAVIOLET ASTRONOMY//AEGORA GRP//AEGORA
2 92 GALAXIES EVOLUTION//GALAXIES FORMATION//GALAXIES HIGH REDSHIFT
3 3798 GRAVITATIONAL LENSING WEAK//GRAVITATIONAL LENSING//DARK MATTER
4 9413 GALAXIES LUMINOSITY FUNCTION MASS FUNCTION//GALAXIES DWARF//GALAXIES PHOTOMETRY
5 1505 GALAXY KINEMATICS AND DYNAMICS//GALAXY STRUCTURE//GALAXY HALO
6 31126 GALAXIES INDIVIDUAL IC 2497//GAUSSIAN NOTCH FILTER//QUASARS INDIVIDUAL IC 2497
7 963 QUASARS GENERAL//GALAXIES ACTIVE//X RAYS GALAXIES
8 25117 RADIASTRON ASTROFIS//DUST EXTINCTION//GALAXIES SPIRAL
9 4927 GALAXIES CLUSTERS GENERAL//GALAXIES CLUSTERING//GALAXIES DISTANCES AND REDSHIFTS
10 131 LARGE SCALE STRUCTURE OF UNIVERSE//COSMOLOGY THEORY//GALAXIES CLUSTERING

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