CultureGraph Record Aggregator

A library that uses marc4j to aggregate MARC21 records into a single record.

Introduction

The Culturegraph project produces groups of records that could be identified by comparing them using a rule based matching procedure.

The library targets the export of those identified records into a single record.

Procedure

Assuming a collection of records as input:

• For each record r

  1. Add the data field 035 (contains a field link fl)

  2. Mark each data field (exclude field 035 and 883) in r with the field link fl

• Collect all data fields from all records

  1. Sort all data fields

  2. Re-Enumerate all field links

  3. Merge duplicate fields

  4. Create a blank record b

     • Use build number as control number (control field 001)

     • Use your ISIL as cataloging agency (control field 003)

  5. Add all data fields to b

  6. Return b

Appendix

Example

The folder example contains three marcxml records and their aggregate.