In POPSI, a subject index entry is divided into three key sections:

(A). Approach-term Section

(B). Alphabetisation Section

(C). Organising Classification Section

(D). Location/Address Section

The Correct answer is A, C and D.

Key Points

• POPSI-
  • It stands for "Postulate-based Permuted Subject Indexing (POPSI)".
  • G. Bhattacharyya developed the POPSI through logical interpretation of the deep structure of subject indexing language (SIL) in 1980.
  • It prescribes the use of apparatus words – such as prepositions, conjunctions, participles, etc. when necessary.
  • It is built around fundamental theoretical ideas on classification, not on a specific classification system like class numbers.
  • It is based on Ranganathan’s General Theory of Library Classification.
• Entry Format:
  • In POPSI, a subject index entry is divided into three key sections:
    • Approach-term Section: Contains the approach-term, with or without upper links, helping in locating subject entries.
    • Organising Classification Section: Provides entries for organising classification, aiding in the understanding and relevance prediction of subjects.
    • Location/Address Section: Lists the serial numbers of records, assisting in finding the bibliographic information related to the subject.