Page 100 - DLIS405_INFORMATION_STORAGE_AND_RETRIEVAL

Unit 9: Trends in Indexing

• In alphabetizing, uppercase and lowercase letters are considered the same. Notes
• Simple Index is a powerful yet affordable solution for Keyword Indexing.
• Simple Index is also much easier to use because it is designed for single-user scanning
environments instead of large scanning service bureaus.
• Post-coordinated indexing is the opposite of pre-coordinated indexing.
• In a post-coordinate system, a single concept is represented by a single term.
• The kind of system in which coordination is done at the time of indexing is called pre-coordi-
nate indexing system.
• Pre-coordinate indexes eliminate the need for sophisticated search logic.
• In pre-coordinate systems, the multidimensional character at the subject matter is forced into
a one-dimensional representations.
• A citation index is an index of citations between publications, allowing the user to easily
establish which later documents cite which earlier documents.

9.11 Keywords

Derived Indexing Terms : Are terms occurring in the text to be indexed.
Simple Index : Is a powerful yet affordable solution for keyword Indexing.

9.12 Review Questions

1. Write about current Trends in Indexing.
2. What do you know about Assign Indexing and Aphabetical Indexing?
3. Define Pre-coordinate indexing system.
4. Explain advantages and disadvantages of pre-coordinate indexing system.
5. Write the major citation indexing services.

Answers: Self Assessment

1. (c) 2. (b) 3. (a)
4. True 5. False 6. True
7. False 8. True

9.13 Further Readings

Best, DP, Ed. The fourth resource: information and its management. Aldershot: Aslib,
1996.
Chowdhary, GG: Introduction to Modern Information Retrieval. London: LA, 1999.
Deegan, M. and Simon Tanner. Digital futures. London. LA, 2002.

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