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  • × author_ss:"Prasher, R.G."
  • × type_ss:"a"
  1. Prasher, R.G.: Index and indexing (1990) 0.04 
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    Abstract
    Reviews the evolution of subject indexing techniques such as: Chain indexing; POPSI; PRECIS, post-coordinate indexing; keyword indexing; and citation indexing. Specific developments that have taken place in India are reviewed
    Object
    Chain indexing
  2. Prasher, R.G.: Evaluation of indexing system (1989) 0.02 
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    Abstract
    Describes information system and its various components-index file construstion, query formulation and searching. Discusses an indexing system, and brings out the need for its evaluation. Explains the concept of the efficiency of indexing systems and discusses factors which control this efficiency. Gives criteria for evaluation. Discusses recall and precision ratios, as also noise ratio, novelty ratio, and exhaustivity and specificity and the impact of each on the efficiency of indexing system. Mention also various steps for evaluation.

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