ISSN : 1225-598X
This study aims to identify and analyze the types of abridgement in classification numbers by comparing the schedules of the full and abridged editions of the DDC system. To this end, a content analysis was conducted using the most recent printed editions: DDC 23 and ADDC 15. The results shows several types of abridgement, including ‘deleting of classification numbers’, ‘merging of classification numbers’, ‘changing the scope of classification facet’, ‘simplifying the structure’, and ‘abridging the classification of literature’. Drawing on these findings, the applicability of the identified abridgement types to the KDC system was examined, and methodological implications for simplifying KDC classification numbers were proposed.