QA catalogue for analysing library data

Bibbi-katalogen (fullstendig) number of records:
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Thompson—Traill completeness

These scores are the implementation of the following paper:

Kelly Thompson and Stacie Traill (2017) Implementation of the scoring algorithm described in Leveraging Python to improve ebook metadata selection, ingest, and management, Code4Lib Journal, Issue 38, 2017-10-18. http://journal.code4lib.org/articles/12828

Their approach to calculate the quality of ebook records comming from different data sources.

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 score is the summary of these criteria scores.

Record Element	MARC field/position/subfield	How counted
1. ISBN	020	1 point for each occurrence of field
2. Authors	100, 110, 111	1 point for each occurrence of field(s)
3. Alternative Titles	246	1 point for each occurrence of field
4. Edition	250	1 point for each occurrence of field
5. Contributors	700, 710, 711, 720	1 point for each occurrence of field(s)
6. Series	440, 490, 800, 810, 830	1 point for each occurrence of field(s)
7. Table of Contents and Abstract	505, 520	2 points if both fields exist; 1 point if either field exists
8. Date (MARC 008)	008/7-10	1 point if valid coded date exists
9. Date (MARC 26X)	260$c or 264$c	1 point if 4-digit date exists; 1 point if matches 008 date.
10. LC/NLM Classification	050, 060, 090	1 point if any field exists
11. Subject Headings: Library of Congress	600, 610, 611, 630, 650, 651 second indicator 0	1 point for each field up to 10 total points
12. Subject Headings: MeSH	600, 610, 611, 630, 650, 651 second indicator 2	1 point for each field up to 10 total points
13. Subject Headings: FAST	600, 610, 611, 630, 650, 651 second indicator 7, $2 fast	1 point for each field up to 10 total points
14. Subject Headings: GND (This was not part of the original algorithm)	600, 610, 611, 630, 650, 651 second indicator 7, $2 fast	1 point for each field up to 10 total points
15. Subject Headings: Other	600, 610, 611, 630, 650, 651, 653 if above criteria are not met	1 point for each field up to 5 total points
16. Description	008/23=o and 300$a “online resource”	2 points if both elements exist; 1 point if either exists
17. Language of Resource	008/35-37	1 point if likely language code exists
18. Country of Publication Code	008/15-17	1 point if likely country code exists
19. Language of Cataloging	040$b	1 point if either no language is specified, or if English is specified
20. Descriptive cataloging standard	040$e	1 point if value is “rda”

components

The histograms of the individual components: