Tagging Vocabulary

The set of terms and categories used to label content or products with structured attributes. For a coffee roaster, the tagging vocabulary might include origin, processing method, varietal, roast level, and flavor notes. For a streaming platform, it includes mood, tone, pace, setting, and narrative structure. The tagging vocabulary is the schema that makes the catalogue intelligible to the recommendation engine. Its design is a strategic exercise: the tags must align with the dimensions customers use to make purchasing decisions, not just with the internal inventory logic of the business. A poorly designed vocabulary produces recommendations that feel generic; a well‑designed one produces recommendations that feel insightful.

Example: Netflix’s tagging vocabulary of 70,000 micro‑genres enables recommendations that match viewers with content along subtle emotional and stylistic dimensions.