which will retrieve records that match
user language to words contained in a text and
involve guess-work and trial-and-error searching
a search by descriptor guarantees more precise
and relevant results. This is because the use of one
specific descriptor from a controlled vocabulary
should retrieve all relevant records indexed
under the topic described by that descriptor. In
addition, embedded associative and hierarchica
relationships may point researchers to further
pertinent results. That is why thesauri are highly
appreciated by information specialists – librarians
documentalists, archivists, and web managers
alike.