I am starting module 5 today, although I noticed they have given us a few weeks to complete it, and no wonder it isn't making a whole lot of sense to me at the moment. I guess the more I read the more it will fall into place.
Vocabularies, whether controlled or uncontrolled, are also known as indexing languages.
Derived indexing takes words from the document.
Assigned indexing takes words from somewhere else and assigns them to the document.
Subject approaches
The controlled vocabulary approach is where a specific word or phrase is selected to denote a certain subject.
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