10 Sep 2003
CS 6210: Module 5
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Controlled vocabularies
¡Benefits
l(Potentially) high precision, high recall
lQuestion: which of these components is more important?
l
¡Drawbacks
lCostly to construct and maintain
lIs difficult to use
¡Need CV knowledge
Query
Relevant
Documents
Controlled
Terms
Indexing
Retrieval
ASK plays a role here in drawbacks
Need to know cv knowledge rather than subject knowledge to be successful, relationship between terms