Class information for:
Level 1: ACCREDITATION AND QUALITY ASSURANCE//PROFICIENCY TESTING//MEASUREMENT UNCERTAINTY

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
18 4 CHEMISTRY, ANALYTICAL//TOXICOLOGY//ENVIRONMENTAL SCIENCES 697102
627 3       ACCREDITATION AND QUALITY ASSURANCE//PRESSURE SENSITIVE PAINT//CHEMISTRY, ANALYTICAL 12679
2308 2             ACCREDITATION AND QUALITY ASSURANCE//PROFICIENCY TESTING//HYDROCHLOROTHIAZIDE 4795
4275 1                   ACCREDITATION AND QUALITY ASSURANCE//PROFICIENCY TESTING//MEASUREMENT UNCERTAINTY 1848

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ACCREDITATION AND QUALITY ASSURANCE journal 3167361 27% 38% 492
2 PROFICIENCY TESTING authKW 880888 10% 27% 191
3 MEASUREMENT UNCERTAINTY authKW 545034 11% 16% 195
4 REFERENCE MATERIALS authKW 284629 7% 12% 138
5 FITNESS FOR PURPOSE authKW 205651 2% 43% 28
6 METROLOGY IN CHEMISTRY authKW 201286 1% 54% 22
7 CERTIFIED REFERENCE MATERIAL authKW 167539 4% 13% 73
8 PROFICIENCY TESTING SCHEME authKW 160100 1% 72% 13
9 HOMOGENEITY STUDY authKW 153469 1% 75% 12
10 E N NUMBERS authKW 138126 0% 90% 9

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Chemistry, Analytical 46677 67% 0% 1244
2 Instruments & Instrumentation 18169 31% 0% 580
3 Food Science & Technology 1704 12% 0% 222
4 Environmental Sciences 244 7% 0% 138
5 Biochemical Research Methods 172 4% 0% 77
6 Spectroscopy 82 2% 0% 46
7 Chemistry, Applied 63 3% 0% 47
8 Materials Science, Characterization, Testing 35 1% 0% 13
9 Medicine, Legal 23 0% 0% 9
10 Medical Laboratory Technology 20 1% 0% 15

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 REFERENCE MAT MEASUREMENTS 128857 5% 9% 85
2 FOOD STAND AGCY 106247 0% 69% 9
3 EUROPEAN UNION REFERENCE CHEM ELEMENTS FOOD A 102317 0% 100% 6
4 DG 12 76735 0% 75% 6
5 ENVIRONM MEASUREMENT TESTING 71052 0% 83% 5
6 GEN COORDINAT ACCREDITAT CGCRE 68211 0% 100% 4
7 AQS BADEN WURTTEMBERG 51158 0% 100% 3
8 CELJE 51158 0% 100% 3
9 CLIN SUPPORT GRP 51158 0% 100% 3
10 PHARM FAFAR 51152 0% 50% 6

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ACCREDITATION AND QUALITY ASSURANCE 3167361 27% 38% 492
2 TRAC-TRENDS IN ANALYTICAL CHEMISTRY 61563 6% 3% 108
3 FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY 14726 4% 1% 69
4 JOURNAL OF AOAC INTERNATIONAL 14074 4% 1% 65
5 ANALYST 11568 5% 1% 101
6 MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA 8870 1% 4% 13
7 GEOSTANDARDS AND GEOANALYTICAL RESEARCH 4766 1% 3% 11
8 JOURNAL OF THE FOOD HYGIENIC SOCIETY OF JAPAN 3013 1% 1% 16
9 ANALYTICAL METHODS 2706 2% 1% 32
10 QUIMICA ANALITICA 2614 0% 2% 7

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 PROFICIENCY TESTING 880888 10% 27% 191 Search PROFICIENCY+TESTING Search PROFICIENCY+TESTING
2 MEASUREMENT UNCERTAINTY 545034 11% 16% 195 Search MEASUREMENT+UNCERTAINTY Search MEASUREMENT+UNCERTAINTY
3 REFERENCE MATERIALS 284629 7% 12% 138 Search REFERENCE+MATERIALS Search REFERENCE+MATERIALS
4 FITNESS FOR PURPOSE 205651 2% 43% 28 Search FITNESS+FOR+PURPOSE Search FITNESS+FOR+PURPOSE
5 METROLOGY IN CHEMISTRY 201286 1% 54% 22 Search METROLOGY+IN+CHEMISTRY Search METROLOGY+IN+CHEMISTRY
6 CERTIFIED REFERENCE MATERIAL 167539 4% 13% 73 Search CERTIFIED+REFERENCE+MATERIAL Search CERTIFIED+REFERENCE+MATERIAL
7 PROFICIENCY TESTING SCHEME 160100 1% 72% 13 Search PROFICIENCY+TESTING+SCHEME Search PROFICIENCY+TESTING+SCHEME
8 HOMOGENEITY STUDY 153469 1% 75% 12 Search HOMOGENEITY+STUDY Search HOMOGENEITY+STUDY
9 E N NUMBERS 138126 0% 90% 9 Search E+N+NUMBERS Search E+N+NUMBERS
10 ASSIGNED VALUE 137553 1% 73% 11 Search ASSIGNED+VALUE Search ASSIGNED+VALUE

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 34529 ATMOSPHER PHYS OPT METROL//ACCREDITATION AND QUALITY ASSURANCE//FOOD FOOD PROC QUAL
2 23386 QUANTITATIVE NMR//QNMR//QUANTITATIVE NUCLEAR MAGNETIC RESONANCE
3 22978 ACCURACY PROFILE//TOTAL ERROR//LERMDV
4 18953 DEFINITIVE METHODS//RADIOCHEMICAL NEUTRON ACTIVATION ANALYSIS//PACIFIC AGRIFOOD SUMMERLAND
5 15795 CLASSICAL ESTIMATOR//SIMULTANEOUS TOLERANCE INTERVALS//INVERSE ESTIMATOR
6 36764 CIEMCIES MATEMAT INFORMAT//CONSERVATION OF MONEY//E COMMERCE TRANSACTIONS PROCESSING
7 14183 METROLOGIA//MEASUREMENT UNCERTAINTY//COVERAGE INTERVAL
8 28330 AR C68397AA//DESIGN QUALIFICATION//HTUPA
9 32312 SENVAR//COMPUTER ASSISTED TARGET FACTOR ANALYSIS//COMPUTER INTENSIVE RESAMPLING METHODS
10 25055 KJELDAHL METHOD//KJELDAHL//DUMAS METHOD

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