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  • × theme_ss:"Preserved Context Index System (PRECIS)"
  1. DeHart, F.E.; Glazier, J.: Computer searching on PRECIS : an exploration of measuring comparative retrieval effectiveness (1984) 0.02 
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    Abstract
    Designing research on the retrieval effectiveness of computer searches on PRECIS compared with retrieval effectiveness of searches on other types of subject analysis used in computer-based information sources is a complex process. This paper explores the complexity of measuring comparative retrieval effectiveness through a comparison of the subject analysis provided by the PRECIS system for fifty articles with the subject analysis provided for the same articles by three computer-based information sources: ERIC/CIJE, LLBA/Online and PsycINFO. Objectives are: (1) to discover factors that should be taken into account when designing this type of research; and (2) to identify extraneous variables that work against internal validity in research design .
  2. PRECIS: Recent applications (1986) 0.02 
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    Content
    Enthält die Beiträge: CAIN, J.: PRECIS at UTLAS; CHOR, L.: PRECIS: report on chinese entries; DYKSTRA, M.: FORMAT; Connecting Canada's audiovisual information; SMITH, F.: An in-house PRECIS system for support in education; CHIPMAN, A.: Access to picture collections using PRECIS
  3. Mahapatra, M.; Biswas, S.C.: Efficiency of PRECIS role operators (1984) 0.02 
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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
  4. Austin, D.: PRECIS (2009) 0.01 
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    Abstract
    Derek Austin's PRECIS, or PREserved Context Index System, was one of the most sophisticated indexing systems ever developed for text. Austin noted that there are many ways that the meaning of index entries may be misread and misunderstood, if the original context from which the concept came was not present. Drawing on a good understanding of linguistics, Austin and his colleagues developed a highly rigorous, yet not impossibly difficult, set of principles to use in indexing with the help of PRECIS. The system was particularly valuable for generating multiple word orderings of entries that still retained their proper contextual meaning. Much of the need for this feature was obviated by the development of powerful full text searching in information systems, however, and PRECIS receded from view in information science. The final sections of the article that address the details of coding and indexing management are deleted from the text below.
    Source
    Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
  5. ¬The PRECIS index systems : principles, applications, and prospects. Proc. of the Int. PRECIS workshop sponsored ... , Univ. of Maryland, 15.-17.10.1976. (1977) 0.01 
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    Content
    Enthält die Beiträge: AUSTIN, D.: The development of PRECIS, and introduction to its syntax; AUSTIN, D.: The semantics of PRECIS: vocabulary control and the RIN system; AUSTIN, D.: Management aspects of PRECIS, and current research and development; SØRENSEN, J.: Multilingual aspects of PRECIS; RICHMOND, P.A.: PRECIS compared with other indexing systems; BRUIN, V. de: PRECIS in a university library; SCHABAS, A.H.: Machine searching of UK MARC on title, LCSH, and PRECIS for selective dissemeination of information; TAYLOR, A.: Manual application of PRECIS in a high school library; ROBINSON, C.D.: Indexing nonbook materials by PRECIS; DYKSTRA, M.: The National Film Board of Canada project; COOK, C.D.: The practical possibilities of PRECIS in North America
  6. Michell, G.: Does PRECIS have feet of clay? : problems with the universality of the role operators (1979) 0.01 
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    Abstract
    One current trend in information retrieval that can facilitate resource sharing and cost reduction is the sread of common indexing languages. Of the more sophisticated languages available, clearly the best known and widely adopted is PRECIS. One of the claims made for PRECIS by its designer is that the role operators it uses correspond to linguistic universals, making PRECIS eminently suitable for multilingual indexing. This strong claim, if justified, could make PRECIS the common indexing language of choice where translation problems have high priority, as they do in Canada. This paper shows there is little support for this claim to universality because the role operators are defined in terms of superficial characteristics of language that are far from universal
    Source
    Sharing resources, sharing costs. Proc. of the 7th Annual Canadian Conf. on Information Science, Banff, 12.-15.5.1979
  7. Butcher, J.E.; Trotter, R.: Building on PRECIS : strategies for online subject access in the British Library (1989) 0.01 
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  8. Shuiqing, H.; Hanqing, H.: ¬The realizing of Chinese PRECIS on computer (1991) 0.01 
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  9. Dykstra, M.: Subject indexing and retrieval: what more can technology do? (1987) 0.01 
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  10. Peters, H.J.: User reactions to PRECIS indexes (1981) 0.00 
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    Imprint
    Liverpool : Polytechnic. School of Librarianship and Information Studies
  11. Venkatachari, P.N.: Application of PRECIS to Indian languages : a case study (1982) 0.00 
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    Source
    Perspectives in library and information science (Viswanathan Festschrift). Ed.: S.N. Agawahl
  12. Kuhlen, R.: Linguistische Grundlagen (1980) 0.00 
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    Source
    Grundlagen der praktischen Information und Dokumentation: eine Einführung. 2. Aufl
  13. Austin, D.; Sørensen, J.: PRECIS in a multilingual context : Pt.2: A linguistic and logical explanation of the syntax. (1976) 0.00 
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    Abstract
    In this second paper in the series on PRECIS we set out to establish a theoretical model of the indexing operation to account for the growing empirical evidence that PRECIS can be applied successfully to the terms and phrases of more than one natural language (NL). For this purpose, the system is examined from two different but related viewpoints, the first linguistic and the second logical. In linguistic terms, the schema of role operators is related to certain features of NL which are regarded by linguists as language-independent, particular attention being paid to Chomsky's 1965 theory, the notion of deep cases, and the idea that roles, as used in an indexing language (IL) are related to deep cases in NL. It is realised that we should not rely too heavily on analogies between NL and IL, on the grounds that these two kinds of language have different structures and to some extent different functions, Consequently, the structure of a PRECIS string is also considered in terms of an alternative logic, and it is suggested that the order of terms in strings and entries, explained in the earlier paper through reference to the dual properties of context-dependency and one-toone relationships, is also amenable to a different but reinforcing explanation in terms of time-dependency. These two types of explanation, the linguistic and the logical, form the basis for a proposed theoretical model of the 'stages of indexing'. Finally, the authors consider the implications of this model for multilingual indexing.
  14. Austin, D.: PRECIS: Introduction (1987) 0.00 
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    Source
    Encyclopedia of library and information science. Vol.42, [=Suppl.7]
  15. Austin, D.: Automatisierung in der Sacherschließung der British Library (1984) 0.00 
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    Abstract
    Dieser Aufsatz beschäftigt sich mit Management-Aspekten der Sacherschließung in der British Library, Bibliographic Services Division, wo computergestützte, nicht völlig "automatische" Verfahren angewendet werden. In einer ausführlichen Darstellung des Arbeitsablaufes im Subject Systems Office wird der Weg eines Dokumentes durch die verschiedenen Sektionen verfolgt, und die betriebswirtschaftlichen Folgen der besonderen Rolle von PRECIS in diesem Arbeitsablauf werden erörtert. Das Mehrdateiensystem der British-Library-Datenbank wird beschrieben; es wird gezeigt, wie diese Struktur den effektiven Wiedergebrauch von Daten ermöglicht. Weiterhin wird die Verbesserung des on-line Retrieval durch den Einbau von präkoordinierten Themenangaben in den Suchablauf behandelt; abschließend wird die Rolle des Computers in der Sacherschließung einer IuD-Einrichtung wie der British Library diskutiert
  16. Bakewell, K.G.B.: Indexers' reactions to PRECIS (1979) 0.00 
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    Abstract
    The background to the Liverpool Polytechnique study of indexer reaction to the PRECIS indexing system and the methodology of the study are described. Some of the findings are discussed, special attention being given to points which some indexers regarded as advantages and other as disadvantages; the alleged labour-intensiveness of PRECIS; the British Library and PRECIS; and the impact of PRECIS on the British library community. A thesaurus of terms used in the British Library PRECIS indexes is needed, and some consideration should be given to the possible simplifications of PRECIS or modification to suit the needs of different users. Feedback from users of PRECIS indexes is required
  17. Assuncào, J.B.: PRECIS en portuguès : em busca uma adaptacào (1989) 0.00 
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    Abstract
    Report on research carried out in Brazil for a doctoral thesis, investigating the possibility of using the PRECIS indexing system for documents in Portuguese. Discusses the theoretical basis of PRECIS, and presents the resultss of a study in comparing the use PRECIS to index 2 samples of documents, in English and Portuguese respectively. Concludes that, with minor modifications to take account of the differences in structure between the 2 languages. PRECIS could produce satisfactory results for documents in Portuguese. This suggests the further possibility that PRECIS - because of its sound logical basis rather than its complex linguistic theory - could become a multilingual indexing system.
  18. ¬The PRECIS system for computer-generated indexes and its use in the British National Bibliography (1972) 0.00 
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    Series
    Contributions in librarianship and information science; no.3
  19. Bidd, D.; Chevigny, L. de; Marshall, M.: PRECIS for subject access in a national audiovisual information system (1986) 0.00 
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    Abstract
    The first opportunity to assess a largescale application of the PRECIS indexing system in North America came with its adoption by the National Film Board of Canada as the method of subject access to a national information system for Canadian audiovisual materials. The authors provide an overview of PRECIS use by this automated bibliographic service - the reasons for its choice, the challenge involved in the subject analysis and indexing of audiovisual documents, the methodology and software used to process PRECIS records, the resulting catalogue subject indexes and user reaction
  20. Lambert, G.: PRECIS in a multilingual context : Pt.4: The application of PRECIS in French. (1976) 0.00 
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    Abstract
    This fourth paper in the series on PRECIS will consider the theoretical model of the indexing operation proposed in an earlier paper, and extend its application to one of the Romance languages, namely French. The present author has noted, throughout the publication of this series, how closely these logico-linguistic explanations could be applied to indexing in the French language. It is realised that experiments into PRECIS as a multilingual system are not complete, and that a new phase has undoubtedly started with the current British Library investigation of its translingual potential. Nevertheless, it would appear that the major problems still facing the researchers, such as the treatment of inflections, infixes, etc., are mostly related to the Germanic languages. As far as French is concerned, it is a relatively simple matter to give a positive answer to the question posed in the first paper: " . . . Do the codes and procedures developed so far (including the specified additions) amount to a general system which is capable of operating in any of the major European (and other) languages?"

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