Page 184 - DLIS402_INFORMATION_ANALYSIS_AND_REPACKAGING

Unit 10: Pre-coordinate, Post-coordinate and Citation Indexing

4. Standardisation: It is concerned with semantics. It helps in the decision of standard terms Notes
for synonyms and the terms for reference generation. It is done vocabulary control. In
step 3 and 4, classaurus has been suggested to be used. The above chain after this step
will be:
Medicine (D), Man. Respiratory System. Lungs (E), Disease. Tuberculosis (P of E),
Chemotherapy (=Chemical treatment) (A on P)
5. Preparation of the EOC(Entry for Organising Classification): It consists of preparing
the entry for generating organising classification by inserting appropriate notations from
the POPSI table. The above chain after this step will take the following shape.
7 Medicine, 6 Man. Respiratory System. Lungs, 6.2 Disease. Tuberculosis, 6.2.1
Chemotherapy (=Chemical treatment)
6. Decision about TA (terms of approach): This step is concerned with the decision regarding
terms of approach for generating successive index entries and references.
In this step ‘Lungs’, ‘Tuberculosis’ and ‘Chemotherapy’ are selected as terms of approach
and a cross reference entry is decided to be made for ‘Chemotherapy’.
7. Preparation of EAC (Entries for Associative Classification): This step consists of
preparation of entries under each approach terms and references. This step will result in
the following entries.
Lungs
7 Medicine, 6 Man. Respiratory System. Lungs,
6.2 Disease. Tuberculosis, 6.2.1 Chemotherapy
Tuberculosis
7 Medicine, 6 Man. Respiratory System. Lungs,
6.2 Disease. Tuberculosis, 6.2.1 Chemotherapy
Chemotherapy
7 Medicine, 6 Man. Respiratory System. Lungs,
6.2 Disease. Tuberculosis, 6.2.1 Chemotherapy
8. Alphabetization: In this step all the index entries including references are arranged in a
word by word sequence
(i) Chemical treatment
Chemotherapy
(ii) Chemotherapy
7 Medicine… …
(iii) Lungs
7 Medicine … …
(iv) Tuberculosis
7 Medicine … …
Conclusion
POPSI is certainly an extension of Chain Indexing, though they differ from each other. POPSI has
successfully solved the problem of disappearing chain which was a major criticism against chain
indexing. POPSI made the indexing system free from classification scheme because this system is
based on general theory of classification and is not tagged with any classification scheme.

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