noun
specialized classification system
Technical term used in computing and information science for a domain-specific taxonomy or classification scheme.
このデータベースでは、専門分類体系に従って文献が整理されている。
In this database, documents are organized according to a specialized classification system.
A general classification system; 専門分類体系 specifies a specialized or domain-specific one.
Compound of 専門 (specialty) + 分類 (classification) + 体系 (system). A straightforward modern technical term.