taxonomy-design

Designing a controlled vocabulary requires building a category hierarchy where each child node is a true subtype of its parent, applying IS-A substitution checks to ensure consistent classification and reliable item retrieval across the structure.

Preventing taxonomy drift requires defining explicit assignment rules and moving cross-cutting dimensions into faceted classifications or tags, eliminating duplicate branches so the tagging system avoids becoming an uncontrolled catch-all.

You need faceted classification when items possess cross-cutting attributes that shouldn't be duplicated across a single category tree, allowing users to filter by multiple independent dimensions rather than navigating one rigid hierarchy.

Setting up governance rules requires defining explicit boundary definitions between sibling categories and establishing controlled vocabulary policies that specify when terms are synonyms versus distinct categories, ensuring consistent item assignment.

Organizing a knowledge graph with SKOS principles involves applying controlled taxonomy design to define semantic relations, category hierarchies, and explicit assignment rules that maintain consistent classification boundaries across related concepts.

Relying on a single organizational principle for a product catalog limits browsability when items have multiple valid access points, requiring faceted classification and tagging governance to prevent mixing incompatible hierarchical structures.