Preserved context index system (precis), Humanities

Assignment Help:

Preserved Context Index System (PRECIS) 

PRECIS (Preserved Context Index System) was designed and developed by Derek Austin by about 1970 as an alternative procedure for deriving the subject headings and subject index entries for British National Bibliography  (BNB). Since 1952, for nearly 20 years, BNB followed chain procedure for deriving subject index entries. Two most  important factors worked for the development of PRECIS: I) Idea of replacing chain indexing technique of BNB; and ii) the decision of  the British Library to generate computer produced BNB  with all the indexes in  view of launching the UKMARC project. Accordingly, a research project for a suitable alternative for generating subject indexes directly from the machine readable records were undertaken by the British Library with the following objectives, which, ultimately resulted in the development of PRECIS: 

  1. The computer, not the indexer, should produce all index entries. The indexer's responsibility would be only to prepare the input strings and to give necessary instructions to the computer to generate indexes according to a definite format; 
  2. Each of the sought terms should find index entries and each entry should express the complete thought content/full context of the document  unlike the chain indexing where only one entry is fully co-extensive with the subject and others are cross references describing only  one  aspect of the complete  content of the document; 
  3. Each of the entries should be expressive; 
  4. The system should be based on a single set of logical rules to make it consistent; and 
  5. The system must have sufficient references for semantically related terms. PRECIS is now a recognised indexing model and has been adopted by a number of indexing agencies to produce subject indexes to a wide range of indexing tools like national bibliographies, library catalogues, indexes to audio-visual materials,  musical scores, micro documents, etc.  

Related Discussions:- Preserved context index system (precis)

Main entry defined - library management, Main Entry Defined   "Specific...

Main Entry Defined   "Specific Entry giving maximum information about the whole of a document. All the other entries: specific or general relating to the document, are normally

Feminist research methodologies, Feminist Research Methodologies- Feminist ...

Feminist Research Methodologies- Feminist research is research that is performed by women who consider as feminists, and that has an exact reasons for knowing (a 'why'), specific k

Different types of ready reference sources, DIFFERENT TYPES OF READY REFE...

DIFFERENT TYPES OF READY REFERENCE SOURCES There are many types of ready reference sources. These sources satisfy fact-finding queries or in few cases, material-finding ques

.development studies, what is the definition of the concept foreign aid?

what is the definition of the concept foreign aid?

European history before 1715, Normal 0 false false false ...

Normal 0 false false false EN-US X-NONE X-NONE

Classified catalogue code (ccc), CCC   Classified Catalogue Code lays d...

CCC   Classified Catalogue Code lays down general principles about the choice of personal names as the basis of the heading. These principles are embodied in the Canons (genera

Gender roles in society- a global perspective, Gender Roles in Society: A G...

Gender Roles in Society: A Global Perspective The role of a woman and a man in society is influenced through a variety of factors. These factors vary along with the culture, re

Uses of special subject encyclopaedia, Special Subject Encyclopaedia I...

Special Subject Encyclopaedia It is rather common for the reference librarian to receive queries regarding specific subjects. The answer of such queries can be searched from t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd