The use of thesauri in online retrieval

Abstract

The controlled vocabulary versus the free text approach to information retrieval is reviewed from the mid 1960s to the early 1980s. The dominance of the free text approach following the Cranfield tests is increasingly coming into question as a result of tests on existing online data bases and case studies. This is supported by two case studies on the Coffeeline data base. The differences and values of the two approaches are explored considering thesauri as semantic maps. It is suggested that the most appropriate evaluatory technique for indexing languages is to study the actual use made of various techniques in a wide variety of search environments. Such research is becoming more urgent. Economic and other reasons for the scarcity of online thesauri are reviewed and suggestions are made for methods to secure revenue from thesaurus display facilities. Finally, the promising outlook for renewed develop ment of controlled vocabularies with more effective online display techniques is mentioned, although such development must be based on firm research of user behaviour and needs.

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References

C.W. Cleverdon et al., Factors determining the performance of indexing systems, College of Aeronautics, Cranfield (1966).

K. Bhattacharya , The effectiveness of natural language in science indexing and retrieval, Journal of Documentation 30 (1974) 235-254.

P.H. Klingbiel , Machine-aided indexing, Defence Documentation Center, Alexandra, VA (1969).

A. Gilchrist , The thesaurus in retrieval, Aslib, London (1971).

W.A. Martin , Toward an integral multi-file on-line bibliographic data base, Journal of Information Science 2 (1980) 241-253.

E. Michael Keen, The Aberystwyth index languages test, Journal of Documentation 29 (1973 ) 1-35.

S.M. Johnston , Effect of thesaurus indexing on retrieval from machine-readable databases, Quarterly Bulletin of the Association of International Librarians and Documentalists 27 (1982) 90-96.

R.G. Henzler , Free or controlled vocabularies, International Classification 5 ( 1978) 21-26.

B. Hass Weinberg , Multiple sets of human indexing for civil engineering documents: comparison of structure and occurrence rates in full text, Science and Technology Libraries 2 (3) (1982) 13-33.

10.

P. Duckitt , The value of controlled indexing systems in online full text databases, Proc. 5th International Online Information Meeting, London, December 1981 (Learned Information , Oxford, 1981) 447-453.

11.

K. Markey et al., An analysis of controlled vocabulary and free text search statements in online searches, Online Review 4 (1980) 225-236.

12.

L. Wittgenstein , Philosophical Investigations ( Blackwell, Oxford, 2nd ed., 1958).

13.

F.W. Lancaster , Vocabulary control in information retrieval systems, Advances in Librarianship 7 (1977) 1-40.

14.

C.P.R. Dubois , The COFFEELINE database, Quarterly Bulietin of the International Association of Agricultural Librarians and Documentalists 28 (1983) 1-5.

15.

International Coffee Organization, COFFEELINE search guide and thesaurus, London (1982).

16.

E. Svenonius , Natural language vs. controlled vocabulary, Proc. 4th Canadian Conference on Information Science (Canadian Association for Information Science, Ottawa, 1976) 141-150.

17.

N.W. Posnett , Thesaurus of land resource terms and its relationship with a feature card system, Quarterly Bulletin of the International Association of Agricultural Librarians and Documentalists 27 (1982) 74-86.

18.

C.P.R. Dubois , Multilingual information systems, Journal of Information Science 1 ( 1979) 5-12.

19.

T. Gardner and M.L. Goodyear , The inadequacy of interdisciplinary subject retrieval, Special Libraries 68 (1977). 193-197.

20.

P. Hargreaves , On-line information retrieval from foreign language data bases, Loughborough University of Technology M.Sc. thesis, Loughborough (1980).