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  • × author_ss:"Devadason, F.J."
  • × year_i:[1980 TO 1990}
  1. Devadason, F.J.: Postulate-Based Permuted Subject Indexing Language as a metalanguage for computer-aided generation of information retrieval thesaurus (1983) 0.02 
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    Abstract
    The development of the general theory of subject indexing language and of POPSI for organisation, storage and retrieval of subjects embodies in documents has a striking parallel in the search for and development of 'universal forms' and 'deep structure' in language and linguistic studies. This paper briefly traces the development of POPSI language as a metalanguage for information organisation and for generating information retrieval thesaurus. Also a computer-based system for generating an information retrieval thesaurus from modulated subject headings formulated according to POPSI which are enriched with certain codes for relating the terms in the subject headings is described. It is also mentioned that, if it is possible to form a table of equivalent terms in another language for the terms already used to generate the thesaurus, then it is possible to translate the thesaurus automatically into the other language
    Source
    International forum on information and documentation. 8(1983), S.22-29
    Type
    a
  2. Devadason, F.J.: Computerization of Deep Structure Based Indexes (1985) 0.00 
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    Abstract
    The Deep Structure Indexing System is based on: (1) a set of postulated elementary categories of the elements fit to form componentes of names of subjects; (2) a set of syntax rules with reference to the categories; (3) a vocabulary control tool such as Classaurus; (4) a set of indicator digits to denote the categories and their subdivisions; and (5) a set of codes to denote a few of the decisions of the indexer. Names of subjects formulated on the basis mentioned above are input to a set of computer programs to generate several different types of subject index entires. This paper describes briefly the Deep Structure Index System
    Type
    a
  3. Devadason, F.J.; Kumbhar, M.R.: Language and indexing language : Nalimor and Gardin revised (1988) 0.00 
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    Abstract
    Studies the salient features of ordinary language as a means of designing languages for information storage and retrieval systems. Pays particular attention to the POPSI (Postulate-based Permuted Subject Indexing) language.
    Type
    a
  4. Devadason, F.J.: Ranganathan's idea of facet analysis in action (1986) 0.00 
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  5. Devadason, F.J.; Ramanujam, M.K.: Computer aided construction of 'alphabetic' classaurus (1982) 0.00 
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  6. Devadason, F.J.: Online construction of alphabetic classaurus : a vocabulary control and indexing tool (1985) 0.00 
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    Abstract
    Classaurus is a faceted hierarchic scheme of terms with vocabulary control features. It is a system of terms having separate hierarchic schedules of the elementary categories: discipline, entity, property and action, together with their respective species/types, parts and special modifiers. Also there are separate schedules for the common modifiers: form, time, environment, and place. Each of the terms in these hierarchic schedules is enriched with synonyms, quasi synonyms etc. The hierarchic schedules constituting the systematic part is supplemented by ab alphabetical index of chain entries. Classaurus is used in the formulation of subject headings in general, and in particular, subject headings according to the Postulate based Permuted Subject Indexing (POPSI) language. For the construction of classaurus the POPSI language itself provides guidelines. A set or programs have been developed to construct a classaurus using as input, subject headings formulated according to POPSI language which are enriches with certain codes to deniote the different elementary categories, their species, parts, special modifiers and other common modifiers of different kinds. The resulting classaurus has hierarchic schedules but terms in an array are arranged only alphabetically. The hierarchic schedules constitute the systematic part of the classaurus. The system generates an alphabetic index part to the systematic part, in which for each term its broader terms are kept to its right hand side successively along with a code to denote the schedule to which the term belongs. To find out the position of a term in the systematic part, the whole entry for the term in the alphabetic part is taken and the sequence of the terms in it is reversed. Using the code for the schedule in the entry, the appropriate hierarchic schedule is selected. The schedule is then searched using the broader terms successively as keys until the the term in question is reached, wherein all the hierarchically related terms could be found, including synonyms, quasi-synonyms etc. Both the systematic part and the alphabetical index part are printed out for manual reference and also kept as direct access files for on-line access and on-the-spot updating and building up of the classaurus while inputting new subject headings formulated for this purpose
    Type
    a

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