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Library Sciences QUESTION #1509
Question 1
In information retrieval, which type of retrieval tool uses a controlled vocabulary to represent the subject content of documents?
  • Full-text search engine
  • Thesaurus-based index✔️
  • Free-text keyword system
  • Boolean retrieval without vocabulary control
Correct Answer Explanation
A thesaurus-based index uses a controlled vocabulary — a structured list of preferred terms with cross-references — to consistently represent subject content, improving retrieval precision over uncontrolled free-text keyword systems.