classification work; sorting task
Refers to the task or process of classifying items, often used in computing, library science, or data management contexts.
I will finish the classification work on this data by tomorrow.
Volunteers are helping with the library's sorting tasks.
分類 is the general concept of classification, while 分類作業 specifically refers to the work or task of classifying.
Compound of 分類 (classification) and 作業 (work, operation).