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

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
5727 1516 17.4 39%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
2436 3630 ACCREDITATION AND QUALITY ASSURANCE//PROFICIENCY TESTING//MEASUREMENT UNCERTAINTY

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 ACCREDITATION AND QUALITY ASSURANCE Journal 179 35% 28% 419
2 PROFICIENCY TESTING Author keyword 27 21% 8% 115
3 PROFICIENCY TEST Author keyword 22 35% 3% 50
4 ASSIGNED VALUE Author keyword 18 83% 1% 10
5 MEASUREMENT UNCERTAINTY Author keyword 16 11% 9% 143
6 NOTIFIED ANALYTICAL METHOD Author keyword 14 100% 0% 7
7 HOMOGENEITY STUDY Author keyword 12 75% 1% 9
8 METROLOGY IN CHEMISTRY Author keyword 12 44% 1% 20
9 OUT OF SPECIFICATION TEST RESULTS Author keyword 11 100% 0% 6
10 METHOD PERFORMANCE STUDY Author keyword 11 69% 1% 9

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 PROFICIENCY TESTING 27 21% 8% 115 Search PROFICIENCY+TESTING Search PROFICIENCY+TESTING
2 PROFICIENCY TEST 22 35% 3% 50 Search PROFICIENCY+TEST Search PROFICIENCY+TEST
3 ASSIGNED VALUE 18 83% 1% 10 Search ASSIGNED+VALUE Search ASSIGNED+VALUE
4 MEASUREMENT UNCERTAINTY 16 11% 9% 143 Search MEASUREMENT+UNCERTAINTY Search MEASUREMENT+UNCERTAINTY
5 NOTIFIED ANALYTICAL METHOD 14 100% 0% 7 Search NOTIFIED+ANALYTICAL+METHOD Search NOTIFIED+ANALYTICAL+METHOD
6 HOMOGENEITY STUDY 12 75% 1% 9 Search HOMOGENEITY+STUDY Search HOMOGENEITY+STUDY
7 METROLOGY IN CHEMISTRY 12 44% 1% 20 Search METROLOGY+IN+CHEMISTRY Search METROLOGY+IN+CHEMISTRY
8 OUT OF SPECIFICATION TEST RESULTS 11 100% 0% 6 Search OUT+OF+SPECIFICATION+TEST+RESULTS Search OUT+OF+SPECIFICATION+TEST+RESULTS
9 METHOD PERFORMANCE STUDY 11 69% 1% 9 Search METHOD+PERFORMANCE+STUDY Search METHOD+PERFORMANCE+STUDY
10 REFERENCE MATERIALS 8 11% 5% 70 Search REFERENCE+MATERIALS Search REFERENCE+MATERIALS

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 LABORATORY PROTOCOL 30 84% 1% 16
2 UNCERTAINTY CALCULATIONS 18 53% 2% 23
3 HARMONIZED GUIDELINES 16 46% 2% 26
4 UNCORRECTED BIAS 12 86% 0% 6
5 LEGISLATIVE LIMITS 9 83% 0% 5
6 CRMS 7 53% 1% 9
7 CERTIFIED REFERENCE MATERIALS 6 18% 2% 31
8 FAT REFERENCE MATERIAL 6 100% 0% 4
9 METROLOGICAL APPROACH 5 60% 0% 6
10 HOUSE REFERENCE MATERIALS 4 75% 0% 3

Journals


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 ACCREDITATION AND QUALITY ASSURANCE 179 35% 28% 419

Reviews


Title Publ. year Cit. Active
references		 % act. ref.
to same field
Estimating uncertainty in analytical procedures based on chromatographic techniques 2010 55 42 38%
Treatment of uncorrected measurement bias in uncertainty estimation for chemical measurements 2008 22 14 71%
Uncertainty of measurement and conformity assessment: a review 2011 13 27 70%
Use of recovery and bias information in analytical chemistry and estimation of its uncertainty contribution 2008 14 22 82%
Measurement uncertainty 2007 36 8 50%
European Commission proficiency tests for pesticide residues in fruits and vegetables 2010 12 15 60%
Proficiency test for heavy metals in feed and food in Europe 2009 8 7 71%
Quality improvement in determination of chemical oxygen demand in samples considered difficult to analyze, through participation in proficiency-testing schemes 2010 8 12 75%
On the development of quality assurance 2014 2 37 46%
Challenges in preparing water-matrix reference materials for PAHs and pesticides: examples from SWIFT-WFD proficiency-testing schemes 2009 6 9 78%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ.
in class
1 FOOD STAND AGCY 5 54% 0.5% 7
2 F AS 4 75% 0.2% 3
3 AQS BADEN WURTTEMBERG 3 100% 0.2% 3
4 CELJE 3 100% 0.2% 3
5 CLIN SUPPORT GRP 3 100% 0.2% 3
6 EUROPEAN UNION REFERENCE CHEM ELEMENTS FOOD A 3 100% 0.2% 3
7 ENVIRONM MEASUREMENT TESTING 3 60% 0.2% 3
8 CECUL DQB 2 67% 0.1% 2
9 DEF QUIM BIOL NUCL 2 67% 0.1% 2
10 DIRECCAO GERAL PROTECCAO CULTURAS 2 67% 0.1% 2

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000145329 THEORY OF SAMPLING TOS//GYS SAMPLING THEORY//DG 12
2 0.0000130319 ACCURACY PROFILE//ANALYTICAL METHOD TRANSFER//LERMDV
3 0.0000116691 QUANTITATIVE NMR//QNMR//QHNMR
4 0.0000116381 CARRIER GAS HOT EXTRACTION//HIGH PURITY METALS//DETERMINATION OF OXYGEN
5 0.0000111268 DRUG SAMPLING//FOOD FOOD PROC QUAL//ISO IEC 17025 STANDARD
6 0.0000090580 CLASSICAL ESTIMATOR//INVERSE ESTIMATOR//ERRORS IN BOTH AXES
7 0.0000080410 HARNED CELL//STOICHIOMETRIC DISSOCIATION CONSTANT//SUSPENSION EFFECT
8 0.0000079849 NAA TECHNIQUE//PACIFIC AGRIFOOD SUMMERLAND//DIRECTORATE SCI
9 0.0000078667 ASPAC//COMMUNITY CONSERVATION AREAS//FERTILIZER ADVICE
10 0.0000078356 SPECIMEN BANKING//STANDARD REFERENCE MATERIALS SRMS//CRYOGENIC HOMOGENIZATION