Why Controlled Vocabularies?

Why Controlled Vocabularies?

Objetives of Controlled Vocabularies

The objetive of a controlled vocabulary is to facilitate agreement between the concepts within the site and the
vocabulary of the person using it.

Why Controlled Vocabularies?

Goal of information retrieval systems:
ƒ Efficient access to information
ƒ Core problems:
ƒ Within a domain: different terms with same meaning
ƒ Between domains: same term with different meanings
ƒ Other problems:
ƒ Scalability: almost all IR research is based on small test collections or user communities
ƒ User needs vary with time and subject domain
ƒ Basic disconnect between indexer and user experience



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