12  Authority name analysis

It analyses the coverage of authority names (persons, organisations, events, uniform titles) in the catalogue. It checks specific fields, which might have authority names, and provides details about how and which schemes have been applied.

java -cp $JAR de.gwdg.metadataqa.marc.cli.AuthorityAnalysis [options] <file>

with a bash script

./authorities [options] <file>

or

catalogues/<catalogue>.sh authorities

or

./qa-catalogue --params="[options]" authorities

options:

• general parameters
• -w, --emptyLargeCollectors: empty large collectors periodically. It is a memory optimization parameter, turn it on if you run into a memory problem

The output is a set of files:

• authorities-by-records.csv: general overview of how many records has any authority names
• authorities-by-schema.csv: which authority names schemas are available in the catalogues (such as ISNI, Gemeinsame Normdatei etc.) and where they are referred
• authorities-histogram.csv: a frequency distribution of the number of authority names available in records (x records have 0 authority names, y records have 1 authority name, z records have 2 authority names etc.)
• authorities-frequency-examples.csv: examples for particular distributions (one record ID which has 0 authority name, one which has 1 authority name, etc.)
• authorities-by-schema-subfields.csv: the distribution of subfields of those fields, which contains authority names information. It gives you a background that what other contextual information behind the authority names are available (such as the version of the authority name scheme)