QA catalogue for analysing library data

British Library     last data update: 2020-11-26     number of records: 18,787,911

Shelf-Ready completeness

These scores are the implementation of the following paper:

Emma Booth (2020) Quality of Shelf-Ready Metadata. Analysis of survey responses and recommendations for suppliers, Pontefract (UK): National Acquisitions Group, 2020. p 31. https://nag.org.uk/wp-content/uploads/2020/06/NAG-Quality-of-Shelf-Ready-Metadata-Survey-Analysis-and-Recommendations_FINAL_June2020.pdf

The main purpose of the report is to highlight which fields of the printed and electronic book records are important when the records are coming from different suppliers. 50 libraries participated in the survey, each selected which fields are important to them. The report listed those fields which gets the highest scores.
The current calculation based on this list of essentian fields. If all data elements specified are available in the record it gets the full scrore, if only some of them, it gets a proportional score. E.g. under 250 (edition statement) there are two subfields. If both are available, it gets score 44. If only one of them, it gets the half of it, 22, and if none, it gets 0. For 1XX,, 6XX, 7XX and 8XX the record gets the full scores if at least one of those fields (with subfield $a) is available. The total score became the average. The theoretical maximum score would be 28.44, which could be accessed if all the data elements are available in the record.

histogram

  • y axis: number of records
  • x axis: total score of a record

Each record get a score based on a number of criteria. Each criteria results in a positive score. The final (rounded) score is the summary of these criteria scores.

Record Element MARC field/position/subfield Score
1. Type of record LDR~06 38
2. Bibliographic level LDR~07 40
3. Encoding level and Descriptive cataloguing form LDR~17-18 29
4. Additional characteristics 006~00 9
5. Library of Congress Control Number 010$a 6
6. National Bibliography Number 015$a,015$2 5
7. International Standard Book Number 020$a,020$z,020$q 45
8. System Control Number 035$a,035$z 19
9. Cataloguing source data 040$a,040$b,040$c,040$d,040$e 29
10. Language code 041$a,041$b,041$h 31
11. Library of Congress Call Number 050$a,050$b 13
12. Dewey Decimal Classification Number 082$a,082$2 28
13. Subject Headings 100$a,110$a,111$a,130$a 44
14. Uniform Title 240$a,240$l,240$n,240$p 34
15. Title Statement 245$a,245$b,245$n,245$p,245$c 44
16. Varying Form of Title 246$a,246$b,246$n,246$p 39
17. Edition Statement 250$a,250$b 44
18. Publication, Copyright etc. 264$a,264$b,264$c 45
19. Physical Description 300$a,300$b,300$c 43
20. Content term(s) e.g. text, still image 336$a,336$b,336$2 35
21. Media term e.g. unmediated or computer 337$a,337$b,337$2 35
22. Carrier term e.g. volume or online resource 338$a,338$b,338$2 34
23. Series Statement(s) 490$a,490$v 40
24. General note(s) 500$a 30
25. Bibliography note 504$a 19
26. Contents note 505$a,505$t,505$r 14
27. Summary note(s) 520$a 11
28. Language note(s) 546$a 19
29. Source of descriptive metadata 588$a 4
30. Subject Headings 600$a,610$a,611$a,630$a,647$a,648$a,650$a,651$a,653$a,654$a,655$a,656$a,657$a,658$a,662$a 44
31. Added Entity Name/Title Heading(s) APP(s) 700$a,710$a,711$a,720$a,730$a,740$a,751$a,752$a,753$a,754$a 44
32. Additional Physical format(s) 776$a 12
33. Electronic access URL 856$u 9
34. Series Heading(s) (traced) AAP(s) (if applicable) 800$a,810$a,811$a,830$a 32

components

The histograms of the individual components:

1. Type of record
score: 0—38

2. Bibliographic level
score: 0—40

3. Encoding level and Descriptive cataloguing form
score: 0—29

4. Additional characteristics
score: 0—9

5. Library of Congress Control Number
score: 0—6

6. National Bibliography Number
score: 0—5

7. International Standard Book Number
score: 0—45

8. System Control Number
score: 0—19

9. Cataloguing source data
score: 0—29

10. Language code
score: 0—31

11. Library of Congress Call Number
score: 0—13

12. Dewey Decimal Classification Number
score: 0—28

13. Subject Headings
score: 0—44

14. Uniform Title
score: 0—34

15. Title Statement
score: 0—44

16. Varying Form of Title
score: 0—39

17. Edition Statement
score: 0—44

18. Publication, Copyright etc.
score: 0—45

19. Physical Description
score: 0—43

20. Content term(s) e.g. text, still image
score: 0—35

21. Media term e.g. unmediated or computer
score: 0—35

22. Carrier term e.g. volume or online resource
score: 0—34

23. Series Statement(s)
score: 0—40

24. General note(s)
score: 0—30

25. Bibliography note
score: 0—19

26. Contents note
score: 0—14

27. Summary note(s)
score: 0—11

28. Language note(s)
score: 0—19

29. Source of descriptive metadata
score: 0—4

30. Subject Headings
score: 0—44

31. Added Entity Name/Title Heading(s) APP(s)
score: 0—44

32. Additional Physical format(s)
score: 0—12

33. Electronic access URL
score: 0—9

34. Series Heading(s) (traced) AAP(s) (if applicable)
score: 0—32