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  • × author_ss:"Biswas, S.C."
  1. Biswas, S.C.; Smith, F.: Computerized Deep Structure Indexing System : a critical appraisal (1988) 0.00 
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  2. Biswas, S.C.: Two decades of POPSI, 1969-1988 : a literature review (1988) 0.00 
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  3. Mahapatra, M.; Biswas, S.C.: Interdependence of PRECIS role operators : a quantitative analysis of their associations (1986) 0.00 
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  4. Biswas, S.C.; Smith, F.: Efficiency and effectiveness of deep structure based indexing languages : PRECIS vs. DSIS (1991) 0.00 
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    Abstract
    A subject indexing language (SIL) is an artificial language used for formulating names of subjects and is composed of (a) a vocabulary, (b) a list of elementary categories, and (c) the rules of syntax. A string indexing language is an SIL, whose expressions are multiple overlappimg index entries, constructed accordingly to explicit syntax rules. PRECIS, developed by Austin, and POPSI, developed by Bhattacharyya, are two such string indexing languages. DSIS is a more versatile version of the POPSI system, developed by Devadason. There have been several attempts to compare and evaluate the superiority of one system over another, with the exception that none of these tried to compare their performances from the searcher's point of view. This present study tries to compare the efficiency and effectiveness of printed subject indexes produced by PRECIS and DSIS on a non-empirical basis and based on the following five major characteristics of index entries identified by Craven as desirable from the searcher's viewpoint: (1) predicitibility, (2) collocation, (3) clarity, (4) succinctness, and (5) eliminability. A representative sample of 600 documents (both macro and micro), chosen from three different social science subject fields, has been used as the test data. The main points of discussion are (a) the term structure, (b) the term relationships, and (c) the entry structure, generated by the two systems. On the whole, a PRECIS index performs better than a DSIS index in terms of most of the above characteristics. It has been concluded that the user will search the former more efficiently and effectively than the latter
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  5. Biswas, S.C.; Smith, F.: Classed thesauri in indexing and retrieval : a literature review and critical evaluation of online alphabetic classaurus (1989) 0.00 
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    Abstract
    Reviews the research that led to the development of a hierarchic scheme of terms with vocabulary control features, called Classaurus, and describes a project aimed at writing software that could be used for the automatic generation of an online alphabetic Classaurus. The problems encountered are discussed and suggestions for further research are made.
    Type
    a
  6. Mahapatra, M.; Biswas, S.C.: PRECIS: its history and application : an extented state-of-the-art review from the beginning up to 1982 (1983) 0.00 
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  7. Mahapatra, M.; Biswas, S.C.: Efficiency of PRECIS role operators (1984) 0.00 
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    Abstract
    The efficiency of the role operators of PRECIS may be studied from two viewpoints - quantitative as well as qualitative. The frequency of appearance of different role operators in an input string may be taken as a measure of such quantitative parameters of efficiency. The scope of this paper lies in measuring the efficiency of role operators through their frequency of appearances in input strings. Most of the earlier research on PRECIS focused either on its general descriptions or its application to various subjects, media, languages, institutions, countries and to any regional/national/international information exchange network. No work has so far been reported which makes a quantitative evaluation of the system through its role operators except some general evaluative studies against different subject fields
    Type
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  8. Biswas, S.C.; Smith, F.: Term and cross reference structure in computerized Deep Structure Indexing System (1988) 0.00 
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