Class information for:
Level 1: SETI//EXTRATERRESTRIAL INTELLIGENCE//FERMI PARADOX

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
14977 738 31.8 39%


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
1 4 ECONOMICS//EDUCATION & EDUCATIONAL RESEARCH//PSYCHOL 3876184
594 3       ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES//UV B RADIATION//ORIGIN OF LIFE 14910
3915 2             SETI//EXTRATERRESTRIAL INTELLIGENCE//FERMI PARADOX 808
14977 1                   SETI//EXTRATERRESTRIAL INTELLIGENCE//FERMI PARADOX 738

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 SETI authKW 3508816 14% 79% 107
2 EXTRATERRESTRIAL INTELLIGENCE authKW 1749444 8% 69% 61
3 FERMI PARADOX authKW 851125 3% 86% 24
4 INTERSTELLAR COMMUNICATION authKW 705541 2% 95% 18
5 SEARCH FOR EXTRATERRESTRIAL INTELLIGENCE authKW 678912 3% 86% 19
6 DRAKE EQUATION authKW 517176 2% 83% 15
7 INTERSTELLAR MESSAGES authKW 376130 1% 91% 10
8 ACTIVE SETI authKW 372370 1% 100% 9
9 METI authKW 368007 2% 68% 13
10 LOGNORMAL PROBABILITY DENSITIES authKW 330996 1% 100% 8

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 Engineering, Aerospace 33547 32% 0% 239
2 Astronomy & Astrophysics 10011 48% 0% 356
3 Biology 2000 15% 0% 112
4 Geosciences, Multidisciplinary 1845 19% 0% 141
5 Social Sciences, Interdisciplinary 224 3% 0% 23
6 History & Philosophy of Science 141 2% 0% 12
7 Religion 90 1% 0% 11
8 International Relations 86 2% 0% 12
9 Art 74 1% 0% 7
10 Social Issues 70 1% 0% 8

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 CREAT TECHNOL GRP 172392 1% 83% 5
2 SETI PERMANENT COMM 165498 1% 100% 4
3 SETI PERMANENT STUDY GRP 124123 0% 100% 3
4 PROJECT PHOENIX 82749 0% 100% 2
5 TASK FORCE SCI TECHNOL 82749 0% 100% 2
6 FUTURE HUMANITY 72395 1% 25% 7
7 ALBERTS SETI CHAIR 41374 0% 100% 1
8 ATTORNEYS COUNSELORS LAW 41374 0% 100% 1
9 CNRS EHESS MBHN UMR 8560 41374 0% 100% 1
10 COHN PHILOSOPHY HIST SCI IDEAS 41374 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 ACTA ASTRONAUTICA 266744 26% 3% 192
2 INTERNATIONAL JOURNAL OF ASTROBIOLOGY 265251 7% 12% 53
3 JBIS-JOURNAL OF THE BRITISH INTERPLANETARY SOCIETY 154226 5% 11% 34
4 QUARTERLY JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY 57706 3% 6% 23
5 ASTROBIOLOGY 56434 5% 4% 36
6 SPACE POLICY 11325 2% 2% 12
7 ASTRONOMY & GEOPHYSICS 4462 1% 2% 7
8 ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES 4073 1% 1% 10
9 ICARUS 3700 4% 0% 29
10 DISCOVER 3444 0% 4% 2

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 SETI 3508816 14% 79% 107 Search SETI Search SETI
2 EXTRATERRESTRIAL INTELLIGENCE 1749444 8% 69% 61 Search EXTRATERRESTRIAL+INTELLIGENCE Search EXTRATERRESTRIAL+INTELLIGENCE
3 FERMI PARADOX 851125 3% 86% 24 Search FERMI+PARADOX Search FERMI+PARADOX
4 INTERSTELLAR COMMUNICATION 705541 2% 95% 18 Search INTERSTELLAR+COMMUNICATION Search INTERSTELLAR+COMMUNICATION
5 SEARCH FOR EXTRATERRESTRIAL INTELLIGENCE 678912 3% 86% 19 Search SEARCH+FOR+EXTRATERRESTRIAL+INTELLIGENCE Search SEARCH+FOR+EXTRATERRESTRIAL+INTELLIGENCE
6 DRAKE EQUATION 517176 2% 83% 15 Search DRAKE+EQUATION Search DRAKE+EQUATION
7 INTERSTELLAR MESSAGES 376130 1% 91% 10 Search INTERSTELLAR+MESSAGES Search INTERSTELLAR+MESSAGES
8 ACTIVE SETI 372370 1% 100% 9 Search ACTIVE+SETI Search ACTIVE+SETI
9 METI 368007 2% 68% 13 Search METI Search METI
10 LOGNORMAL PROBABILITY DENSITIES 330996 1% 100% 8 Search LOGNORMAL+PROBABILITY+DENSITIES Search LOGNORMAL+PROBABILITY+DENSITIES

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 CIRKOVIC, MM , (2013) WHO ARE THE SETI SCEPTICS?.ACTA ASTRONAUTICA. VOL. 89. ISSUE . P. 38-45 24 89% 0
2 WRIGHT, JT , MULLAN, B , SIGURDSSON, S , POVICH, MS , (2014) THE (G) INFRARED SEARCH FOR EXTRATERRESTRIAL CIVILIZATIONS WITH LARGE ENERGY SUPPLIES. I. BACKGROUND AND JUSTIFICATION.ASTROPHYSICAL JOURNAL. VOL. 792. ISSUE 1. P. - 27 66% 18
3 CIRKOVIC, MM , (2015) KARDASHEV'S CLASSIFICATION AT 50+: A FINE VEHICLE WITH ROOM FOR IMPROVEMENT.SERBIAN ASTRONOMICAL JOURNAL. VOL. 191. ISSUE . P. 1 -15 32 60% 2
4 CIRKOVIC, MM , VUKOTIC, B , (2016) LONG-TERM PROSPECTS: MITIGATION OF SUPERNOVA AND GAMMA-RAY BURST THREAT TO INTELLIGENT BEINGS.ACTA ASTRONAUTICA. VOL. 129. ISSUE . P. 438 -446 35 54% 0
5 HAQQ-MISRA, J , BUSCH, MW , SOM, SM , BAUM, SD , (2013) THE BENEFITS AND HARM OF TRANSMITTING INTO SPACE.SPACE POLICY. VOL. 29. ISSUE 1. P. 40-48 25 69% 3
6 MUSSO, P , (2012) THE PROBLEM OF ACTIVE SETI: AN OVERVIEW.ACTA ASTRONAUTICA. VOL. 78. ISSUE . P. 43 -54 17 94% 6
7 NEAL, M , (2014) PREPARING FOR EXTRATERRESTRIAL CONTACT.RISK MANAGEMENT-JOURNAL OF RISK CRISIS AND DISASTER. VOL. 16. ISSUE 2. P. 63 -87 27 55% 4
8 MORRISON, IS , GOWANLOCK, MG , (2015) EXTENDING GALACTIC HABITABLE ZONE MODELING TO INCLUDE THE EMERGENCE OF INTELLIGENT LIFE.ASTROBIOLOGY. VOL. 15. ISSUE 8. P. 683 -696 22 65% 1
9 BAUM, SD , HAQQ-MISRA, JD , DOMAGAL-GOLDMAN, SD , (2011) WOULD CONTACT WITH EXTRATERRESTRIALS BENEFIT OR HARM HUMANITY? A SCENARIO ANALYSIS.ACTA ASTRONAUTICA. VOL. 68. ISSUE 11-12. P. 2114 -2129 21 70% 8
10 MACCONE, C , (2014) EVOLUTION AND HISTORY IN A NEW "MATHEMATICAL SETI" MODEL.ACTA ASTRONAUTICA. VOL. 93. ISSUE . P. 317-344 14 100% 0

Classes with closest relation at Level 1


Rank Class id link
1 17877 PLANETARY PROTECTION//BIOTECHNOL PLANETARY PROTECT GRP//PANSPERMIA
2 37405 UNIVERSAL PSYCHOMETRICS//AESTHETICS THEORY//AGENT POLICY
3 34909 ASTRON SCI EDUC//ABGRADE//ASTROBIOL MOL BIOL CYANOBACTERIA
4 24538 DAISYWORLD//GAIA THEORY//GAIA HYPOTHESIS
5 8159 INITIAL CONDITIONS AND ETERNAL UNIVERSE//COSMOL//ANTHROPIC PRINCIPLE
6 36940 NAVAIDS//LORAN C//BUOYAGE
7 28801 LIQUID MIRRORS//CHEM POB 653//METAL LIQUID LIKE FILMS
8 26718 FUTURES//EXISTENTIAL RISK//EXPERTISE ENVIRONM HLTH
9 34215 AGRARIAN SOCIETIES//ANCIENT GARDEN CULTURE//CANADA US
10 35620 HISTORY OF RADIOTHERAPY//RADIOTHERAPY HISTORY//VICTOR DESPEIGNES

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