the third step of popsi is
Answers
Answer:
The inherent weakness of chain indexing has been its dependence on a scheme of classification. Another weakness was its disappearing chain. In view of this situation, the information scientists at the Documentation Research and Training Centre (DRTC), Banglore, directed themselves from these limitations; the Postulate Based Permuted Subject Indexing (POPSI) is the results of these efforts. It was developed by Ganesh Bhattacharya.
POPSI does not depend on the Class Number but is based on Ranganathan’s postulates and principles of general theory of classification.
POPSI is specifically based on:
(a) a set of postulated Elementary Categories (ECs) of the elements fit to form component of subject proposition.
Elementary Categories are:
Discipline (D) - It covers conventional field of study, e.g. Chemistry, Physics, etc.,
Entity (E) - e.g. Plant, Lens, Eye, Book, etc.,
Action (A) - e.g. Treatment, Migration, etc; and
Property (P) - It includes ideas denoting the concept of ‘attribute’ – qualitative or quantitative. e.g. Power, Capacity, Property, etc.
(b) a set of rules of syntax with reference to ECs
The Syntax is based on Ranganathan’s general theory of classification.
(c) a set of indicator digits or notations to denote the ECs and their subdivisions. It is got by POPSI table as given below:
POPSI Table
0 = Form modifier
1 = General treatment
2 = Phase relation
2.1 = general
2.2 = bias
2.3 = comparison
2.4 = similarity
2.5 = difference
2.6 = application
2.7 = influence
3 = Time modifier
4 = Entity modifier
5 = Place modifier
6 = Entry
7 = Discipline
(d) a vocabulary control device designated as ‘Classaurus’.
Contents
Format
Steps in POPSI (with Example)
Conclusion
Steps in POPSI (with Example)
The index entries according to this system are generated in a systematic manner with the help of following steps of operation.
Analysis
Formalisation
Modulation
Standardisation
Preparation of EOC
Decision about TA
Preparation of EAC
Alphabetisation
Let us examine these stages with the help of a sample title, ‘Chemical treatment of tuberculosis of lungs’.
Analysis
Subject indicative expression, the starting point of index generation, may be the title of a paper, a book or any other document. According to the first stage of operation, the expression is analysed to identify the facets in terms of concepts and modifiers. Analysis of the above mentioned example will lead to the following:
D - Medicine
E - Lungs
A - Chemical Treatment
P - Tuberculosis
Formalisation
In the stage of formalisation the sequence of components derived by analysis has to be decided. It involves the arrangement of component terms according to the principles of sequence of components indicating the status of each component term. Applying this principle, the components are sequenced in the following manner to obtain the basic chain:
Medicine (D), Lungs (E), Tuberculosis (P of E), Chemical treatment (A on P)