Class information for:
Level 1: DISTRIBUTED INFORMATION RETRIEVAL//SIGNATURE FILE//SUPERIMPOSED CODING

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
17823 1                   DISTRIBUTED INFORMATION RETRIEVAL//SIGNATURE FILE//SUPERIMPOSED CODING 608

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 DISTRIBUTED INFORMATION RETRIEVAL authKW 992575 5% 64% 30
2 SIGNATURE FILE authKW 981723 4% 76% 25
3 SUPERIMPOSED CODING authKW 547509 2% 81% 13
4 INVERTED INDEX authKW 441131 3% 43% 20
5 INDEX COMPRESSION authKW 417143 2% 62% 13
6 INVERTED FILE authKW 414669 3% 50% 16
7 BITMAP INDEX authKW 339277 2% 55% 12
8 COLLECTION SELECTION authKW 266581 1% 86% 6
9 BITMAP COMPRESSION authKW 207342 1% 100% 4
10 METASEARCH authKW 199927 1% 43% 9

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Computer Science, Information Systems 34533 62% 0% 377
2 Information Science & Library Science 6466 16% 0% 99
3 Computer Science, Theory & Methods 4932 25% 0% 152
4 Computer Science, Software Engineering 4785 21% 0% 126
5 Computer Science, Hardware & Architecture 2304 11% 0% 68
6 Computer Science, Artificial Intelligence 1536 14% 0% 83
7 COMPUTER APPLICATIONS & CYBERNETICS 172 0% 0% 3
8 Engineering, Electrical & Electronic 61 9% 0% 52
9 Telecommunications 39 3% 0% 17
10 Computer Science, Interdisciplinary Applications 11 2% 0% 11

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 LICEF 178730 2% 34% 10
2 IST ISTI A FAEDO 103671 0% 100% 2
3 CONSIPLIO RIC 51836 0% 100% 1
4 DEV DATABASES T SID41 51836 0% 100% 1
5 DOCTORAL DEGREE PROGRAM ENGN 51836 0% 100% 1
6 FB WIRT AFT 51836 0% 100% 1
7 FESTUS AGHAGBO NWAKO LIB 51836 0% 100% 1
8 INFORMAT SYST QUANTITAT SCI ISQS 51836 0% 100% 1
9 INTELLIGENT INTEGRATED PORT MANAGEMENT SYST 51836 0% 100% 1
10 ITI SANDERS 51836 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ACM TRANSACTIONS ON INFORMATION SYSTEMS 138030 6% 7% 38
2 INFORMATION PROCESSING & MANAGEMENT 74561 9% 3% 55
3 INFORMATION RETRIEVAL 50705 3% 5% 18
4 INFORMATION TECHNOLOGY-RESEARCH DEVELOPMENT APPLICATIONS 17938 0% 12% 3
5 INFORMATION RETRIEVAL JOURNAL 16580 1% 8% 4
6 INFORMATION SYSTEMS 12446 3% 1% 19
7 ACM TRANSACTIONS ON THE WEB 12081 1% 3% 7
8 ACM TRANSACTIONS ON DATABASE SYSTEMS 10980 2% 2% 13
9 ACM TRANSACTIONS ON OFFICE INFORMATION SYSTEMS 7601 1% 4% 4
10 I-S ANALYZER 7403 0% 14% 1

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 DISTRIBUTED INFORMATION RETRIEVAL 992575 5% 64% 30 Search DISTRIBUTED+INFORMATION+RETRIEVAL Search DISTRIBUTED+INFORMATION+RETRIEVAL
2 SIGNATURE FILE 981723 4% 76% 25 Search SIGNATURE+FILE Search SIGNATURE+FILE
3 SUPERIMPOSED CODING 547509 2% 81% 13 Search SUPERIMPOSED+CODING Search SUPERIMPOSED+CODING
4 INVERTED INDEX 441131 3% 43% 20 Search INVERTED+INDEX Search INVERTED+INDEX
5 INDEX COMPRESSION 417143 2% 62% 13 Search INDEX+COMPRESSION Search INDEX+COMPRESSION
6 INVERTED FILE 414669 3% 50% 16 Search INVERTED+FILE Search INVERTED+FILE
7 BITMAP INDEX 339277 2% 55% 12 Search BITMAP+INDEX Search BITMAP+INDEX
8 COLLECTION SELECTION 266581 1% 86% 6 Search COLLECTION+SELECTION Search COLLECTION+SELECTION
9 BITMAP COMPRESSION 207342 1% 100% 4 Search BITMAP+COMPRESSION Search BITMAP+COMPRESSION
10 METASEARCH 199927 1% 43% 9 Search METASEARCH Search METASEARCH

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 9454 INFORMATION PROCESSING & MANAGEMENT//JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE//INFORMATION RETRIEVAL
2 12029 INFORMATION RETRIEVAL//LEARNING TO RANK//QUERY EXPANSION
3 17195 B TREE//EXTENDIBLE HASHING//DICTIONARY MACHINE
4 29008 INFORMAT SCI INTELLIGENT SYST//TRIE STRUCTURES//NATURAL LANGUAGE DICTIONARIES
5 12754 CROSS LANGUAGE INFORMATION RETRIEVAL//STEMMING//INTER INFORMAT
6 10483 QUERY OPTIMIZATION//MULTIPLE QUERY OPTIMIZATION//PARALLEL QUERY PROCESSING
7 30315 XML RETRIEVAL//STRUCTURED DOCUMENT RETRIEVAL//STRUCTURED INFORMATION RETRIEVAL
8 11438 WEBOMETRICS//WEB CITATION//SEARCH ENGINES
9 30674 BERNARD MADOFF//CONFIDENCE CON GAMES//INTERNET SEARCHING AND BROWSING
10 32458 DNA SEQUENCE COMPRESSION//REFERENCE BASED COMPRESSION//REFERENTIAL COMPRESSION

Go to start page