Page 176 - DLIS402_INFORMATION_ANALYSIS_AND_REPACKAGING

Unit 9: Cataloguing and Subject Indexing: Principles and Practices

Temperature RT Thermometers Notes
Public opinion
RT Press
Public health
RT Sanitation
Materials:
Ceramic Industry
RT Ceramics
Cells
RT Protoplasm
Money RT
Gold Silver
Similarity:
Singing

Compare a catalogue of any library or publishing house in 1950s with a most modern
catalogue any library or publishing house which is presently used.

Self Assessment

Fill in the blanks:
6. ...... headings are provided in the catalogue entries to provide subject access to information.
7. ...... follows set processes of analysing frequencies of word patterns and comparing results
to other documents in order to assign to subject knowledge.

9.7 Summary

• A catalogue is an ordered list of bibliographical records (document representations or docu-
ment surrogates) that represent the documents in a particular collection of documents.
• Subject indexing is the act of describing a document by index terms to indicate what the
document is about or to summarize its content.
• Subject indexing is used in information retrieval especially to create bibliographic databases
to retrieve documents on a particular subject.
• The first step in indexing is to decide on the subject matter of the document.
• The second stage of indexing involves the translation of the subject analysis into a set of index
terms.
• One application of indexing, the book index, remains relatively unchanged despite the infor-
mation revolution.
• Extraction indexing involves taking words directly from the document.
• Automated extraction indexing may lead to loss of meaning of terms by indexing single words
as opposed to phrases.
• Assignment indexing where index terms are taken from a controlled vocabulary.
• Assignment indexing is used in manual indexing to improve inter-indexer consistency.

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