Class information for:
Level 1: CAPTCHA//HUMAN INTERACTIVE PROOFS//ABUSE OF WEB SITES AND SERVICES

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
35852 91 28.5 26%


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
9 4 COMPUTER SCIENCE, THEORY & METHODS//COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE//COMPUTER SCIENCE, INFORMATION SYSTEMS 1247339
20 3       COMPUTER SCIENCE, INFORMATION SYSTEMS//COMPUTER SCIENCE, THEORY & METHODS//COMPUTER SCIENCE, SOFTWARE ENGINEERING 118625
1591 2             COMPUTERS & SECURITY//DIGITAL INVESTIGATION//INTRUSION DETECTION 7195
35852 1                   CAPTCHA//HUMAN INTERACTIVE PROOFS//ABUSE OF WEB SITES AND SERVICES 91

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 CAPTCHA authKW 5824283 30% 64% 27
2 HUMAN INTERACTIVE PROOFS authKW 2013339 7% 100% 6
3 ABUSE OF WEB SITES AND SERVICES authKW 671113 2% 100% 2
4 DOCUMENT IMAGE DEGRADATIONS authKW 671113 2% 100% 2
5 HUMAN MACHINE DISCRIMINATION authKW 671113 2% 100% 2
6 LEGIBILITY OF TEXT authKW 671113 2% 100% 2
7 OCR PERFORMANCE EVALUATION authKW 671113 2% 100% 2
8 RECAPTCHA authKW 447407 2% 67% 2
9 3D CAPTCHA authKW 335557 1% 100% 1
10 ANTI BOT TECHNIQUES authKW 335557 1% 100% 1

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 Computer Science, Information Systems 1883 37% 0% 34
2 Computer Science, Software Engineering 1171 26% 0% 24
3 Computer Science, Theory & Methods 1125 31% 0% 28
4 Computer Science, Cybernetics 443 7% 0% 6
5 Ergonomics 440 7% 0% 6
6 Computer Science, Hardware & Architecture 269 10% 0% 9
7 Computer Science, Artificial Intelligence 217 13% 0% 12
8 Telecommunications 210 13% 0% 12
9 Engineering, Electrical & Electronic 96 21% 0% 19
10 Literary Theory & Criticism 39 1% 0% 1

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 NACL CIENCIA TECNOL SISTEMAS EMBARCADOS CR 335557 1% 100% 1
2 O CIENCIAS COMP ESTAT 335557 1% 100% 1
3 CYBERCRIME COMP SECUR 167777 1% 50% 1
4 RADCLIFFE ADV STUDIES 167777 1% 50% 1
5 UNIPD 167777 1% 50% 1
6 UNIVERSAL USABIL 149133 2% 22% 2
7 INFORMAT SECUR CRIT INFRASTRUCT PROTECT GRP 67110 1% 20% 1
8 SMARTNESS SEMANT SECUR S3 67110 1% 20% 1
9 DEUSTOTECH COMP 47935 1% 14% 1
10 MOL MAT ANALYT CHEM 47935 1% 14% 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 COMPUTERS & SECURITY 10114 7% 1% 6
2 UNIVERSAL ACCESS IN THE INFORMATION SOCIETY 5100 2% 1% 2
3 ECONTENT 3194 1% 1% 1
4 LIT-LITERATURE INTERPRETATION THEORY 3021 1% 1% 1
5 IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING 2787 2% 0% 2
6 INTERNET RESEARCH-ELECTRONIC NETWORKING APPLICATIONS AND POLICY 2771 1% 1% 1
7 IEEE SECURITY & PRIVACY 2120 2% 0% 2
8 JOURNAL OF WEB ENGINEERING 1719 1% 1% 1
9 INTERNATIONAL JOURNAL OF HUMAN-COMPUTER INTERACTION 1592 2% 0% 2
10 MULTIMEDIA TOOLS AND APPLICATIONS 1575 4% 0% 4

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 CAPTCHA 5824283 30% 64% 27 Search CAPTCHA Search CAPTCHA
2 HUMAN INTERACTIVE PROOFS 2013339 7% 100% 6 Search HUMAN+INTERACTIVE+PROOFS Search HUMAN+INTERACTIVE+PROOFS
3 ABUSE OF WEB SITES AND SERVICES 671113 2% 100% 2 Search ABUSE+OF+WEB+SITES+AND+SERVICES Search ABUSE+OF+WEB+SITES+AND+SERVICES
4 DOCUMENT IMAGE DEGRADATIONS 671113 2% 100% 2 Search DOCUMENT+IMAGE+DEGRADATIONS Search DOCUMENT+IMAGE+DEGRADATIONS
5 HUMAN MACHINE DISCRIMINATION 671113 2% 100% 2 Search HUMAN+MACHINE+DISCRIMINATION Search HUMAN+MACHINE+DISCRIMINATION
6 LEGIBILITY OF TEXT 671113 2% 100% 2 Search LEGIBILITY+OF+TEXT Search LEGIBILITY+OF+TEXT
7 OCR PERFORMANCE EVALUATION 671113 2% 100% 2 Search OCR+PERFORMANCE+EVALUATION Search OCR+PERFORMANCE+EVALUATION
8 RECAPTCHA 447407 2% 67% 2 Search RECAPTCHA Search RECAPTCHA
9 3D CAPTCHA 335557 1% 100% 1 Search 3D+CAPTCHA Search 3D+CAPTCHA
10 ANTI BOT TECHNIQUES 335557 1% 100% 1 Search ANTI+BOT+TECHNIQUES Search ANTI+BOT+TECHNIQUES

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 ROSHANBIN, N , MILLER, J , (2013) A SURVEY AND ANALYSIS OF CURRENT CAPTCHA APPROACHES.JOURNAL OF WEB ENGINEERING. VOL. 12. ISSUE 1-2. P. 1 -40 10 77% 6
2 SCHRYEN, G , WAGNER, G , SCHLEGEL, A , (2016) DEVELOPMENT OF TWO NOVEL FACE-RECOGNITION CAPTCHAS: A SECURITY AND USABILITY STUDY.COMPUTERS & SECURITY. VOL. 60. ISSUE . P. 95 -116 12 57% 0
3 HIDALGO, JMG , ALVAREZ, G , (2011) CAPTCHAS: AN ARTIFICIAL INTELLIGENCE APPLICATION TO WEB SECURITY.ADVANCES IN COMPUTERS, VOL 83. VOL. 83. ISSUE . P. 109 -181 10 71% 5
4 NGUYEN, VD , CHOW, YW , SUSILO, W , (2014) ON THE SECURITY OF TEXT-BASED 3D CAPTCHAS.COMPUTERS & SECURITY. VOL. 45. ISSUE . P. 84 -99 7 88% 2
5 MORADI, M , KEYVANPOUR, M , (2015) CAPTCHA AND ITS ALTERNATIVES: A REVIEW.SECURITY AND COMMUNICATION NETWORKS. VOL. 8. ISSUE 12. P. 2135 -2156 10 59% 0
6 YANG, TI , KOONG, CS , TSENG, CC , (2015) GAME-BASED IMAGE SEMANTIC CAPTCHA ON HANDSET DEVICES.MULTIMEDIA TOOLS AND APPLICATIONS. VOL. 74. ISSUE 14. P. 5141 -5156 5 100% 2
7 FOLEY, M , (2014) "PROVE YOU'RE HUMAN": FETISHIZING MATERIAL EMBODIMENT AND IMMATERIAL LABOR IN INFORMATION NETWORKS.CRITICAL STUDIES IN MEDIA COMMUNICATION. VOL. 31. ISSUE 5. P. 365 -379 4 100% 2
8 SOUPIONIS, Y , GRITZALIS, D , (2010) AUDIO CAPTCHA: EXISTING SOLUTIONS ASSESSMENT AND A NEW IMPLEMENTATION FOR VOIP TELEPHONY.COMPUTERS & SECURITY. VOL. 29. ISSUE 5. P. 603-618 4 100% 11
9 KIM, J , YANG, J , WOHN, K , (2014) AGECAPTCHA: AN IMAGE-BASED CAPTCHA THAT ANNOTATES IMAGES OF HUMAN FACES WITH THEIR AGE GROUPS.KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS. VOL. 8. ISSUE 3. P. 1071 -1092 7 47% 0
10 SAHA, SK , NAG, AK , DASGUPTA, D , (2015) HUMAN-COGNITION-BASED CAPTCHAS.IT PROFESSIONAL. VOL. 17. ISSUE 5. P. 42 -48 3 100% 1

Classes with closest relation at Level 1


Rank Class id link
1 26700 MECHANICAL TURK//MTURK//CROWDSOURCING
2 37405 UNIVERSAL PSYCHOMETRICS//AESTHETICS THEORY//AGENT POLICY
3 23537 GENDER CLASSIFICATION//SOFT BIOMETRICS//GENDER RECOGNITION
4 27075 KEYSTROKE DYNAMICS//MOUSE DYNAMICS//BEHAVIORAL BIOMETRICS
5 30552 PHISHING//PHISHING ATTACKS//ANTI PHISHING
6 15358 IP TRACEBACK//DDOS//DDOS ATTACKS
7 20977 WEB ACCESSIBILITY//SECTION 508//WCAG 20
8 34324 LAY ASSESSORS//CARE HOME INSPECTIONS//NEXUS OF PRODUCTION RELATIONS
9 35131 GOOGLE MAPS API//AMBISONIC SPATIALIZATION//AND APPLICATIONS
10 32030 NORMALIZED COMPRESSION DISTANCE//WORD REMOVAL//INFORMATION DISTANCE

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