Class information for:
Level 1: QUERY OPTIMIZATION//DISTRIBUTED DATABASE DESIGN//PARALLEL QUERY PROCESSING

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
7649 1343 25.6 22%


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
864 2             INFORMATION SYSTEMS//COMPUTER SCIENCE, INFORMATION SYSTEMS//ACM TRANSACTIONS ON DATABASE SYSTEMS 11601
7649 1                   QUERY OPTIMIZATION//DISTRIBUTED DATABASE DESIGN//PARALLEL QUERY PROCESSING 1343

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 QUERY OPTIMIZATION authKW 558830 6% 29% 84
2 DISTRIBUTED DATABASE DESIGN authKW 318290 1% 100% 14
3 PARALLEL QUERY PROCESSING authKW 247553 1% 78% 14
4 DISTRIBUTED DATABASE SYSTEM authKW 222795 1% 70% 14
5 QUERY PROCESSING authKW 206269 5% 12% 73
6 DISTRIBUTED DATABASES authKW 192805 4% 17% 49
7 MULTIPLE QUERY OPTIMIZATION authKW 174880 1% 77% 10
8 DISTRIBUTED QUERY OPTIMIZATION authKW 159145 1% 100% 7
9 ACM TRANSACTIONS ON DATABASE SYSTEMS journal 158663 6% 9% 74
10 DISTRIBUTED QUERY PROCESSING authKW 153439 1% 38% 18

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 53690 52% 0% 694
2 Computer Science, Theory & Methods 23319 36% 0% 488
3 Computer Science, Software Engineering 17058 26% 0% 352
4 Computer Science, Hardware & Architecture 9006 15% 0% 198
5 Computer Science, Artificial Intelligence 4216 15% 0% 202
6 COMPUTER APPLICATIONS & CYBERNETICS 1230 1% 0% 12
7 Engineering, Electrical & Electronic 803 16% 0% 221
8 Operations Research & Management Science 392 4% 0% 58
9 Computer Science, Interdisciplinary Applications 231 4% 0% 56
10 Information Science & Library Science 143 2% 0% 25

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 UPPSALA DATABASE 72750 0% 80% 4
2 HIGH PERFORMANCE TECHNOL 68205 0% 100% 3
3 GSCIT 63148 0% 56% 5
4 CLUJ N OCA MATH COMP SCI 45470 0% 100% 2
5 DATABASE EDUC 45470 0% 100% 2
6 3303 3301 22735 0% 100% 1
7 BELL COMMUN 22735 0% 100% 1
8 BOBLINGEN PROGRAMMING 22735 0% 100% 1
9 BUSINESS 210 22735 0% 100% 1
10 CHAIR PRACT COMP SCI 3 22735 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 ACM TRANSACTIONS ON DATABASE SYSTEMS 158663 6% 9% 74
2 DISTRIBUTED AND PARALLEL DATABASES 111428 3% 11% 43
3 INFORMATION SYSTEMS 94269 6% 5% 78
4 IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING 44767 6% 3% 77
5 VLDB JOURNAL 24159 2% 4% 25
6 IEEE TRANSACTIONS ON SOFTWARE ENGINEERING 17523 3% 2% 47
7 LECTURE NOTES IN COMPUTER SCIENCE 12003 16% 0% 218
8 DATA & KNOWLEDGE ENGINEERING 11522 2% 2% 25
9 COMPUTER JOURNAL 9873 3% 1% 34
10 COMPUTER SYSTEMS SCIENCE AND ENGINEERING 8739 1% 2% 17

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 QUERY OPTIMIZATION 558830 6% 29% 84 Search QUERY+OPTIMIZATION Search QUERY+OPTIMIZATION
2 DISTRIBUTED DATABASE DESIGN 318290 1% 100% 14 Search DISTRIBUTED+DATABASE+DESIGN Search DISTRIBUTED+DATABASE+DESIGN
3 PARALLEL QUERY PROCESSING 247553 1% 78% 14 Search PARALLEL+QUERY+PROCESSING Search PARALLEL+QUERY+PROCESSING
4 DISTRIBUTED DATABASE SYSTEM 222795 1% 70% 14 Search DISTRIBUTED+DATABASE+SYSTEM Search DISTRIBUTED+DATABASE+SYSTEM
5 QUERY PROCESSING 206269 5% 12% 73 Search QUERY+PROCESSING Search QUERY+PROCESSING
6 DISTRIBUTED DATABASES 192805 4% 17% 49 Search DISTRIBUTED+DATABASES Search DISTRIBUTED+DATABASES
7 MULTIPLE QUERY OPTIMIZATION 174880 1% 77% 10 Search MULTIPLE+QUERY+OPTIMIZATION Search MULTIPLE+QUERY+OPTIMIZATION
8 DISTRIBUTED QUERY OPTIMIZATION 159145 1% 100% 7 Search DISTRIBUTED+QUERY+OPTIMIZATION Search DISTRIBUTED+QUERY+OPTIMIZATION
9 DISTRIBUTED QUERY PROCESSING 153439 1% 38% 18 Search DISTRIBUTED+QUERY+PROCESSING Search DISTRIBUTED+QUERY+PROCESSING
10 PARALLEL DATABASES 137208 1% 46% 13 Search PARALLEL+DATABASES Search PARALLEL+DATABASES

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 SONG, S , (2015) DESIGN OF DISTRIBUTED DATABASE SYSTEMS: AN ITERATIVE GENETIC ALGORITHM.JOURNAL OF INTELLIGENT INFORMATION SYSTEMS. VOL. 45. ISSUE 1. P. 29 -59 16 89% 0
2 SEN, G , KRISHNAMOORTHY, M , RANGARAJ, N , NARAYANAN, V , (2016) FACILITY LOCATION MODELS TO LOCATE DATA IN INFORMATION NETWORKS: A LITERATURE REVIEW.ANNALS OF OPERATIONS RESEARCH. VOL. 246. ISSUE 1-2. P. 313 -348 30 44% 0
3 SHAH-HOSSEINI, H , GOLSHANARA, L , RANKOOHI, SMTR , (2014) A MULTI-COLONY ANT ALGORITHM FOR OPTIMIZING JOIN QUERIES IN DISTRIBUTED DATABASE SYSTEMS.KNOWLEDGE AND INFORMATION SYSTEMS. VOL. 39. ISSUE 1. P. 175 -206 15 88% 4
4 HAMEURLAIN, A , MORVAN, F , (2004) PARALLEL QUERY OPTIMIZATION METHODS AND APPROACHES: A SURVEY.COMPUTER SYSTEMS SCIENCE AND ENGINEERING. VOL. 19. ISSUE 5. P. 275 -288 16 89% 0
5 RHO, S , MARCH, ST , (1997) OPTIMIZING DISTRIBUTED JOIN QUERIES: A GENETIC ALGORITHM APPROACH.ANNALS OF OPERATIONS RESEARCH. VOL. 71. ISSUE . P. 199-228 18 95% 9
6 GORLA, N , NG, V , LAW, DM , (2012) IMPROVING DATABASE PERFORMANCE WITH A MIXED FRAGMENTATION DESIGN.JOURNAL OF INTELLIGENT INFORMATION SYSTEMS. VOL. 39. ISSUE 3. P. 559 -576 14 78% 0
7 WANG, CP , CHEN, MS , (1996) ON THE COMPLEXITY OF DISTRIBUTED QUERY OPTIMIZATION.IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING. VOL. 8. ISSUE 4. P. 650-662 18 95% 17
8 KOSSMANN, D , (2000) THE STATE OF THE ART IN DISTRIBUTED QUERY PROCESSING.ACM COMPUTING SURVEYS. VOL. 32. ISSUE 4. P. 422 -469 14 74% 218
9 MORFFI, AR , GONZALEZ, CEG , LEMAHIEU, W , GONZALEZ, LMG , (2009) SIADBDD: AN INTEGRATED TOOL TO DESIGN DISTRIBUTED DATABASES.REVISTA FACULTAD DE INGENIERIA-UNIVERSIDAD DE ANTIOQUIA. VOL. . ISSUE 47. P. 155-163 11 92% 1
10 SEVINC, E , COSAR, A , (2011) AN EVOLUTIONARY GENETIC ALGORITHM FOR OPTIMIZATION OF DISTRIBUTED DATABASE QUERIES.COMPUTER JOURNAL. VOL. 54. ISSUE 5. P. 717 -725 10 91% 6

Classes with closest relation at Level 1


Rank Class id link
1 23717 DATA STREAM PROCESSING//CONTINUOUS QUERIES//DATA STREAMS
2 28812 DATA SYNOPSES//SELECTIVITY ESTIMATION//MULTIDIMENSIONAL DATA MANAGEMENT
3 29419 RECURSIVE QUERY PROCESSING//DEDUCTIVE DATABASES//RECURSIVE QUERY EVALUATION
4 13344 DATA WAREHOUSE//OLAP//DATA WAREHOUSING
5 31816 COMPLEX OBJECT RELATIONS//2 PHASE LOCKING PROTOCOL//AD GT1
6 15494 B TREE//DECLUSTERING//EXTENDIBLE HASHING
7 9595 CONCURRENCY CONTROL//REAL TIME DATABASE//TRANSACTION PROCESSING
8 13630 OBJECT ORIENTED DATABASES//OBJECT ORIENTED DATABASE SYSTEMS//OBJECT ALGEBRA
9 19976 SIGNATURE FILE//SUPERIMPOSED CODING//INVERTED FILE
10 6911 FUNCTIONAL DEPENDENCY//SCHEMA MAPPING//ACM TRANSACTIONS ON DATABASE SYSTEMS

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