CIA Controlled Vocabularies and Thesauri 2 — Questions and Answers
Question 1: The ISO 25964 standard was developed to address which area of information management?
- Metadata element sets for digital repositories
- Thesauri construction and their interoperability with other vocabulary types (Correct answer)
- Ontology design principles for the Semantic Web
- Classification system governance for national libraries
Correct answer: Thesauri construction and their interoperability with other vocabulary types
ISO 25964 covers best practices for building and maintaining thesauri and addresses interoperability with other structured vocabularies.
Question 2: Pre-coordination in a controlled vocabulary system refers to:
- Planning vocabulary governance structures before development begins
- Reviewing proposed terms with stakeholders prior to publication
- Combining multiple concepts into compound terms before indexing occurs (Correct answer)
- Coordinating across different vocabularies before integration into one system
Correct answer: Combining multiple concepts into compound terms before indexing occurs
Pre-coordination combines separate concepts into a single compound heading at indexing time, before the retrieval event.
Question 3: In a faceted classification system, each facet represents:
- A synonym cluster for a primary concept in the hierarchy
- A level within the subject hierarchy of preferred terms
- A user-defined tag applied dynamically at retrieval time
- An independent characteristic or dimension of the subject domain (Correct answer)
Correct answer: An independent characteristic or dimension of the subject domain
Facets isolate distinct subject aspects (e.g., material, time period, place) so items can be described along multiple independent dimensions simultaneously.
Question 4: Post-coordination in indexing with controlled vocabularies means:
- Assigning compound subject headings to documents at cataloging time
- Combining individual index terms at the point of retrieval to express complex subjects (Correct answer)
- Reviewing and updating index terms systematically after system launch
- Merging multiple vocabularies together to improve overall domain coverage
Correct answer: Combining individual index terms at the point of retrieval to express complex subjects
Post-coordination defers the combination of simple concepts to the search phase, allowing users to combine terms dynamically at query time.
Question 5: Which of the following best describes polyhierarchy in a controlled vocabulary?
- A vocabulary that covers multiple unrelated subject domains simultaneously
- A classification system that contains more than five hierarchical levels
- A term that has more than one valid broader term within the hierarchy (Correct answer)
- Multiple separate vocabularies that are mapped to a single master term list
Correct answer: A term that has more than one valid broader term within the hierarchy
Polyhierarchy allows a narrower term to belong to more than one broader term category, reflecting real-world semantic complexity.
Question 6: In thesaurus management, 'concept drift' refers to:
- Errors introduced when migrating a vocabulary to a new software system
- A term gradually shifting in meaning over time within a subject domain (Correct answer)
- The tendency of users to ignore preferred terms and apply free-text tags
- Unintended removal of valid terms during a vocabulary pruning exercise
Correct answer: A term gradually shifting in meaning over time within a subject domain
Concept drift describes how a term's meaning evolves over time, requiring vocabulary stewards to periodically update definitions and relationships.
Question 7: When mapping between two controlled vocabularies, an 'exact match' relationship indicates:
- Terms that share the same broader term in their respective hierarchies
- Terms where one vocabulary's concept is broader in scope than the other's
- Terms from different vocabularies that represent the same concept with equivalent scope (Correct answer)
- Terms that have identical character strings but different intended meanings
Correct answer: Terms from different vocabularies that represent the same concept with equivalent scope
An exact match confirms that two terms from different vocabularies can be used interchangeably because they represent the same concept at the same level of specificity.
CIA Controlled Vocabularies and Thesauri 2
The ISO 25964 standard was developed to address which area of information management?