Class information for:
Level 1: INFORMATION PROCESSING & MANAGEMENT//JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE//INFORMATION RETRIEVAL

Basic class information

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
12 4 COMPUTER SCIENCE, THEORY & METHODS//COMPUTER SCIENCE, INFORMATION SYSTEMS//COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE 1181119
31 3       COMPUTER SCIENCE, SOFTWARE ENGINEERING//COMPUTER SCIENCE, INFORMATION SYSTEMS//COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE 113161
355 2             RECOMMENDER SYSTEMS//COLLABORATIVE FILTERING//INFORMATION PROCESSING & MANAGEMENT 17972
9454 1                   INFORMATION PROCESSING & MANAGEMENT//JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE//INFORMATION RETRIEVAL 1186

Terms with highest relevance score



rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 INFORMATION PROCESSING & MANAGEMENT journal 584524 18% 10% 215
2 JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE journal 346909 11% 10% 133
3 INFORMATION RETRIEVAL authKW 177053 11% 5% 134
4 INFORMATION TECHNOLOGY-RESEARCH DEVELOPMENT APPLICATIONS journal 147157 1% 46% 12
5 PROBABILISTIC INDEXING authKW 132862 0% 100% 5
6 CLUSTER BASED RETRIEVAL authKW 106286 1% 67% 6
7 PROBABILISTIC RETRIEVAL authKW 100151 1% 54% 7
8 AD HOC RETRIEVAL authKW 94899 0% 71% 5
9 CLUSTER BASED LANGUAGE MODELS authKW 79717 0% 100% 3
10 CLUSTER HYPOTHESIS authKW 79717 0% 100% 3

Web of Science journal categories



chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Computer Science, Information Systems 68964 63% 0% 744
2 Information Science & Library Science 53041 33% 1% 393
3 Computer Science, Artificial Intelligence 5007 17% 0% 207
4 Computer Science, Theory & Methods 3861 16% 0% 191
5 Computer Science, Software Engineering 985 7% 0% 84
6 Computer Science, Cybernetics 747 2% 0% 29
7 Computer Science, Hardware & Architecture 684 5% 0% 54
8 Ergonomics 137 1% 0% 13
9 Computer Science, Interdisciplinary Applications 85 3% 0% 35
10 Operations Research & Management Science 61 2% 0% 25

Address terms



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 INFORMAT STUDIES WESTERN BANK 34161 0% 43% 3
2 AE RETRIEVAL ENTWICKLUNG 3 26572 0% 100% 1
3 ARC PERCET INTELLIGENT MACHINES COMPLEX ENV 26572 0% 100% 1
4 BIBLIOTECON DOCUMENTAC ALCAZABA DE BADAJOZ 26572 0% 100% 1
5 CERSI INFORMAT SYST 26572 0% 100% 1
6 COMP SCI A INTELLIGENCE 26572 0% 100% 1
7 COMP SCI ANDAI 26572 0% 100% 1
8 COMP SCI ENGN 0114 26572 0% 100% 1
9 COMP SCI YUSONG GU 26572 0% 100% 1
10 CRM CONSULTING TEAM 26572 0% 100% 1

Journals



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 INFORMATION PROCESSING & MANAGEMENT 584524 18% 10% 215
2 JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE 346909 11% 10% 133
3 INFORMATION TECHNOLOGY-RESEARCH DEVELOPMENT APPLICATIONS 147157 1% 46% 12
4 INFORMATION RETRIEVAL 72197 3% 9% 30
5 NACHRICHTEN FUR DOKUMENTATION 33272 2% 7% 19
6 ACM TRANSACTIONS ON INFORMATION SYSTEMS 25891 2% 4% 23
7 JOURNAL OF DOCUMENTATION 19636 2% 3% 28
8 JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY 13563 3% 2% 32
9 ANNUAL REVIEW OF INFORMATION SCIENCE AND TECHNOLOGY 12320 1% 4% 12
10 CANADIAN JOURNAL OF INFORMATION SCIENCE-REVUE CANADIENNE DES SCIENCES DE L INFORMATION 11377 1% 7% 6

Author Key Words



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 INFORMATION RETRIEVAL 177053 11% 5% 134 Search INFORMATION+RETRIEVAL Search INFORMATION+RETRIEVAL
2 PROBABILISTIC INDEXING 132862 0% 100% 5 Search PROBABILISTIC+INDEXING Search PROBABILISTIC+INDEXING
3 CLUSTER BASED RETRIEVAL 106286 1% 67% 6 Search CLUSTER+BASED+RETRIEVAL Search CLUSTER+BASED+RETRIEVAL
4 PROBABILISTIC RETRIEVAL 100151 1% 54% 7 Search PROBABILISTIC+RETRIEVAL Search PROBABILISTIC+RETRIEVAL
5 AD HOC RETRIEVAL 94899 0% 71% 5 Search AD+HOC+RETRIEVAL Search AD+HOC+RETRIEVAL
6 CLUSTER BASED LANGUAGE MODELS 79717 0% 100% 3 Search CLUSTER+BASED+LANGUAGE+MODELS Search CLUSTER+BASED+LANGUAGE+MODELS
7 CLUSTER HYPOTHESIS 79717 0% 100% 3 Search CLUSTER+HYPOTHESIS Search CLUSTER+HYPOTHESIS
8 EXTENDED BOOLEAN MODEL 59786 0% 75% 3 Search EXTENDED+BOOLEAN+MODEL Search EXTENDED+BOOLEAN+MODEL
9 PROBABILITY RANKING PRINCIPLE 55353 0% 42% 5 Search PROBABILITY+RANKING+PRINCIPLE Search PROBABILITY+RANKING+PRINCIPLE
10 BIT COUNTING 53145 0% 100% 2 Search BIT+COUNTING Search BIT+COUNTING

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.

Classes with closest relation at Level 1



rank cluster_id2 link
1 12029 INFORMATION RETRIEVAL//LEARNING TO RANK//QUERY EXPANSION
2 12754 CROSS LANGUAGE INFORMATION RETRIEVAL//STEMMING//INTER INFORMAT
3 17823 DISTRIBUTED INFORMATION RETRIEVAL//SIGNATURE FILE//SUPERIMPOSED CODING
4 29008 INFORMAT SCI INTELLIGENT SYST//TRIE STRUCTURES//NATURAL LANGUAGE DICTIONARIES
5 13623 TEXT CATEGORIZATION//TEXT CLASSIFICATION//TERM WEIGHTING
6 831 INFORMATION RESEARCH-AN INTERNATIONAL ELECTRONIC JOURNAL//INFORMATION SCIENCE & LIBRARY SCIENCE//PROCEEDINGS OF THE ASIS ANNUAL MEETING
7 30315 XML RETRIEVAL//STRUCTURED DOCUMENT RETRIEVAL//STRUCTURED INFORMATION RETRIEVAL
8 17897 INTERNATIONAL CLASSIFICATION//LIBRARY RESOURCES & TECHNICAL SERVICES//INFORMATION SCIENCE & LIBRARY SCIENCE
9 27677 CHINESE WORD SEGMENTATION//ALLERGOL IMMUNOL SERV//ASSOCIATE CONSTRAINT NETWORK
10 12207 PROGRAM-AUTOMATED LIBRARY AND INFORMATION SYSTEMS//ONLINE//LIBRARY SOFTWARE REVIEW

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