Page 209 - DLIS402_INFORMATION_ANALYSIS_AND_REPACKAGING

Information Analysis and Repackaging

Notes whatever else it may be, inherently a jacket, and that it has the characteristics which define a
jacket.Mice can properly be said to be a narrower term of Rodents, because all mice are inherently
rodents, but it is not correct to list Miceas a narrower term of Pests, because some mice, such as
laboratory mice and pet mice, are not pests. The idea is to have relationships in the thesaurus which
are always true, irrespective of context. In the same way, it would not be correct to list Buses as a
narrower term of Diesel-engine vehicles, although many of them are; if we have a diesel-engine bus
in our collection, we should show this by giving it the two terms Buses and Diesel-engine vehicles.

Figure 11.5

Mice BT Rodents
Rodents NT Mice

Shoes BT Footwear
Footwear NT Shoes
Mice BT Pests
Pest NT Mice
Shoes BT Shoemaking
Shoemaking NT Shoes

Good computer software should allow you to search for “Jackets and all its narrower terms” as a
single operation, so that it will not be necessary to type in all the possibilities if you want to do a
generic search:

Figure 11.6: Inclusion of narrower terms

I shall search for.
Jackets or Anoraks
or Blazers or
What jackets of Dinner Jackets or
any kind do we have Donkey jackets.
in the collection?
Computer
consults
the thesaurus

We have the following: Computer uses
1234 : Green anorak thesaurus results
2345: Blue anorak to search the
8876: Black blazer catalogue
8765: Navy blue donkey
jacket

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