-
Schabas, A.H.: Postcoordinate retrieval : a comparison of two retrieval languages (1982)
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- Abstract
- This article reports on a comparison of the postcoordinate retrieval effectiveness of two indexing languages: LCSH and PRECIS. The effect of augmenting each with title words was also studies. The database for the study was over 15.000 UK MARC records. Users returned 5.326 relevant judgements for citations retrieved for 61 SDI profiles, representing a wide variety of subjects. Results are reported in terms of precision and relative recall. Pure/applied sciences data and social science data were analyzed separately. Cochran's significance tests for ratios were used to interpret the findings. Recall emerged as the more important measure discriminating the behavior of the two languages. Addition of title words was found to improve recall of both indexing languages significantly. A direct relationship was observed between recall and exhaustivity. For the social sciences searches, recalls from PRECIS alone and from PRECIS with title words were significantly higher than those from LCSH alone and from LCSH with title words, respectively. Corresponding comparisons for the pure/applied sciences searches revealed no significant differences
- Source
- Journal of the American Society for Information Science. 33(1982), S.32-37
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983)
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- Abstract
- A study was done to test the effectiveness of retrieval using title word searching. It was based on actual search profiles used in the Mechanized Information Center at Ohio State University, in order ro replicate as closely as possible actual searching conditions. Fewer than 50% of the relevant titles were retrieved by keywords in titles. The low rate of retrieval can be attributes to three sources: titles themselves, user and information specialist ignorance of the subject vocabulary in use, and to general language problems. Across fields it was found that the social sciences had the best retrieval rate, with science having the next best, and arts and humanities the lowest. Ways to enhance and supplement keyword in title searching on the computer and in printed indexes are discussed.
- Date
- 14. 3.1996 13:22:21
-
Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983)
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- Pages
- S.22-25
- Series
- Proceedings of the American Society for Information Science; vol. 20
- Source
- Productivity in the information age : proceedings of the 46th ASIS annual meeting, 1983. Ed.: Raymond F Vondra
-
Robertson, S.E.: ¬The methodology of information retrieval experiment (1981)
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- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
-
Belkin, N.J.: Ineffable concepts in information retrieval (1981)
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- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
-
Tague, J.M.: ¬The pragmatics of information retrieval experimentation (1981)
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- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
-
Rijsbergen, C.J. van: Retrieval effectiveness (1981)
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- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
-
Sparck Jones, K.: Retrieval system tests 1958-1978 (1981)
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- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
-
Salton, G.: ¬The Smart environment for retrieval systeme valuation : advantages and problem areas (1981)
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- Source
- Information retrieval experiments. Ed.: K. Sparck Jones
-
Information retrieval experiment (1981)
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- Content
- Enthält die Beiträge: ROBERTSON, S.E.: The methodology of information retrieval experiment; RIJSBERGEN, C.J. van: Retrieval effectiveness; BELKIN, N.: Ineffable concepts in information retrieval; TAGUE, J.M.: The pragmatics of information retrieval experimentation; LANCASTER, F.W.: Evaluation within the environment of an operating information service; BARRACLOUGH, E.D.: Opportunities for testing with online systems; KEEN, M.E.: Laboratory tests of manual systems; ODDY, R.N.: Laboratory tests: automatic systems; HEINE, M.D.: Simulation, and simulation experiments; COOPER, W.S.: Gedanken experimentation: an alternative to traditional system testing?; SPARCK JONES, K.: Actual tests - retrieval system tests; EVANS, L.: An experiment: search strategy variation in SDI profiles; SALTON, G.: The Smart environment for retrieval system evaluation - advantage and problem areas
-
Blair, D.C.; Maron, M.E.: ¬An evaluation of retrieval effectiveness for a full-text document-retrieval system (1985)
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- Footnote
- Vgl. auch : Salton, G.: Another look ... Comm. ACM 29(1986) S.S.648-656; Blair, D.C.: Full text retrieval ... Int. Class. 13(1986) S.18-23: Blair, D.C., M.E. Maron: Full-text information retrieval ... Inf. proc. man. 26(1990) S.437-447.
-
Madelung, H.-O.: Subject searching in the social sciences : a comparison of PRECIS and KWIC indexes indexes to newspaper articles (1982)
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- Abstract
- 89 articles from a small, Danish left-wing newspaper were indexed by PRECIS and KWIC. The articles cover a wide range of social science subjects. Controlled test searches in both indexes were carried out by 20 students of library science. The results obtained from this small-scale retrieval test were evaluated by a chi-square test. The PRECIS index led to more correct answers and fewer wrong answers than the KWIC index, i.e. it had both better recall and greater precision. Furthermore, the students were more confident in their judgement of the relevance of retrieved articles in the PRECIS index than in the KWIC index; and they generally favoured the PRECIS index in the subjective judgement they were asked to make
-
Barraclough, E.D.: Opportunities for testing with online systems (1981)
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- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
-
Keen, E.M.: Laboratory tests of manual systems (1981)
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- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
-
Oddy, R.N.: Laboratory tests : automatic systems (1981)
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- Information retrieval experiment. Ed.: K. Sparck Jones
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Heine, M.D.: Simulation, and simulation experiments (1981)
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- Information retrieval experiment. Ed.: K. Sparck Jones
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Cooper, W.S.: Gedanken experimentation : an alternative to traditional system testing? (1981)
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- Information retrieval experiment. Ed.: K. Sparck Jones
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Sparck Jones, K.: ¬The Cranfield tests (1981)
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- Information retrieval experiments. Ed.: K. Sparck Jones
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Evans, L.: ¬An experiment : search strategy variations in SDI (1981)
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- Information retrieval experiments. Ed.: K. Sparck Jones
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Lancaster, F.W.: Evaluation within the environment of an operating information service (1981)
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- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
