"The field of information retrieval focuses on automated techniques, like keyword indexing, for searching large databases."

Library of Congress Subject Headings


What's Library of Congress Subject Headings?


Functions of Library of Congress Subject Headings


Structure of subject headings


Term relationships


• Equivalence relationships
  
• Hierarchical relationships
  
• Associative relationships
  

Food (May Subd Geog)

 [GN407-GN411.5 (Ethnology)]
 [RA601-RA602 (Public Health)]
 [TX341-TX641 (Home economics)]


UF  Foods
BT  Dinners and dining
      Home economics
      Table
RT  Cookery
      Diet
      Dietary
      Gastronomy
      Nutrition
SA  subdivision Food under ethnic groups, 
      and individual animals and groups
      of animals, e.g. Fishes--Food; also
      headings beginning with the word
      Food; and individual foods and 
      beverages, e.g. Bread, Milk
NT  Acorns as Food
      Agar as Food
      Algae as Food
      Animal Food
      Animals--Food
      Aquatic plants as food
      Artificial food
      Baby foods
      Bentu-speaking peoples--Food

See how the "The Research Topic Triangle" is used.

Research Triangle (example 1)	Research Triangle (example 2)	A Research Worksheet

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Prof. Deb Aikat daikat@email.unc.edu	Tom Hughes, teaching assistant tahughes@email.unc.edu
Eric Chernoff, student coordinator echernof@email.unc.edu	Mike Manning manning1@email.unc.edu

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