Tagiperustaista

Tagiperustaista is a Finnish term used to describe approaches, methods, or systems that organize, filter, or retrieve information primarily through tags (labels) rather than traditional fixed hierarchies or schemas. The word combines tagi (tag) and perustaista (based). It is used in Finnish IT and information management discourse to refer to tag-based or metadata-driven organization, often contrasted with category- or taxonomy-based designs.

Key characteristics include support for multiple labels per item, flexibility as new tags can be added freely, and facilitation of faceted search and personalized organization. The quality of tagging depends on user input or governance; tag normalization and synonym handling may be needed.

Common applications include photo and video management apps relying on user-generated tags, social media platforms enabling tag-based discovery, and data catalogs or document repositories that use metadata tagging. Tag-based systems are often chosen to support dynamic categorization and user-driven organization, especially in environments with evolving content.

Advantages include adaptability, scalability, and user empowerment; drawbacks include inconsistent tagging, vocabulary drift, and challenges in automated retrieval when tags are noisy. Mitigation strategies include tagging guidelines, moderation, and support for controlled vocabularies and automated tagging where appropriate.

Related concepts include folksonomy, metadata, and faceted search.