-
Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990)
0.01
0.014038912 = product of:
0.14038911 = sum of:
0.14038911 = product of:
0.21058366 = sum of:
0.15239656 = weight(_text_:1990 in 5089) [ClassicSimilarity], result of:
0.15239656 = score(doc=5089,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
1.1022682 = fieldWeight in 5089, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.109375 = fieldNorm(doc=5089)
0.058187105 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
0.058187105 = score(doc=5089,freq=2.0), product of:
0.10742335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03067635 = queryNorm
0.5416616 = fieldWeight in 5089, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=5089)
0.6666667 = coord(2/3)
0.1 = coord(1/10)
- Date
- 22. 7.2006 18:43:54
- Source
- Journal of the American Society for Information Science. 41(1990) no.4, S.272-281
- Year
- 1990
-
Logan, E.: Cognitive styles and online behaviour of novice searchers (1990)
0.01
0.005805583 = product of:
0.058055833 = sum of:
0.058055833 = product of:
0.1741675 = sum of:
0.1741675 = weight(_text_:1990 in 6891) [ClassicSimilarity], result of:
0.1741675 = score(doc=6891,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
1.2597351 = fieldWeight in 6891, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.125 = fieldNorm(doc=6891)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Information processing and management. 26(1990), S.503-510
- Year
- 1990
-
Harter, S.P.: Search term combinations and retrieval overlap : a proposed methodology and case study (1990)
0.01
0.0050798855 = product of:
0.050798856 = sum of:
0.050798856 = product of:
0.15239656 = sum of:
0.15239656 = weight(_text_:1990 in 339) [ClassicSimilarity], result of:
0.15239656 = score(doc=339,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
1.1022682 = fieldWeight in 339, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.109375 = fieldNorm(doc=339)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Journal of the American Society for Information Science. 41(1990) no.2, S.132-146
- Year
- 1990
-
Wildemuth, B.M.; Jacob, E.K.; Fullington, A.;; Bliek, R. de; Friedman, C.P.: ¬A detailed analysis of end-user search behaviours (1991)
0.00
0.0043302006 = product of:
0.021651002 = sum of:
0.010176711 = product of:
0.03053013 = sum of:
0.03053013 = weight(_text_:problem in 2423) [ClassicSimilarity], result of:
0.03053013 = score(doc=2423,freq=2.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.23447686 = fieldWeight in 2423, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.0390625 = fieldNorm(doc=2423)
0.33333334 = coord(1/3)
0.011474291 = product of:
0.03442287 = sum of:
0.03442287 = weight(_text_:1990 in 2423) [ClassicSimilarity], result of:
0.03442287 = score(doc=2423,freq=2.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.248977 = fieldWeight in 2423, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.0390625 = fieldNorm(doc=2423)
0.33333334 = coord(1/3)
0.2 = coord(2/10)
- Abstract
- Search statements in this revision process can be viewed as a 'move' in the overall search strategy. Very little is known about how end users develop and revise their search strategies. A study was conducted to analyse the moves made in 244 data base searches conducted by 26 medical students at the University of North Carolina at Chapel Hill. Students search INQUIRER, a data base of facts and concepts in microbiology. The searches were conducted during a 3-week period in spring 1990 and were recorded by the INQUIRER system. Each search statement was categorised, using Fidel's online searching moves (S. Online review 9(1985) S.61-74) and Bates' search tactics (s. JASIS 30(1979) S.205-214). Further analyses indicated that the most common moves were Browse/Specity, Select Exhaust, Intersect, and Vary, and that selection of moves varied by student and by problem. Analysis of search tactics (combinations of moves) identified 5 common search approaches. The results of this study have implcations for future research on search behaviours, for thedesign of system interfaces and data base structures, and for the training of end users
-
Crestani, F.; Rijsbergen, C.J. van: Information retrieval by imaging (1996)
0.00
0.0041048992 = product of:
0.020524496 = sum of:
0.012212053 = product of:
0.03663616 = sum of:
0.03663616 = weight(_text_:problem in 6967) [ClassicSimilarity], result of:
0.03663616 = score(doc=6967,freq=2.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.28137225 = fieldWeight in 6967, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.046875 = fieldNorm(doc=6967)
0.33333334 = coord(1/3)
0.008312443 = product of:
0.02493733 = sum of:
0.02493733 = weight(_text_:22 in 6967) [ClassicSimilarity], result of:
0.02493733 = score(doc=6967,freq=2.0), product of:
0.10742335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03067635 = queryNorm
0.23214069 = fieldWeight in 6967, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=6967)
0.33333334 = coord(1/3)
0.2 = coord(2/10)
- Abstract
- Explains briefly what constitutes the imaging process and explains how imaging can be used in information retrieval. Proposes an approach based on the concept of: 'a term is a possible world'; which enables the exploitation of term to term relationships which are estimated using an information theoretic measure. Reports results of an evaluation exercise to compare the performance of imaging retrieval, using possible world semantics, with a benchmark and using the Cranfield 2 document collection to measure precision and recall. Initially, the performance imaging retrieval was seen to be better but statistical analysis proved that the difference was not significant. The problem with imaging retrieval lies in the amount of computations needed to be performed at run time and a later experiement investigated the possibility of reducing this amount. Notes lines of further investigation
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
-
Bollmann-Sdorra, P.: Probleme der Validität bei Retrievaltests (1990)
0.00
0.0036284893 = product of:
0.036284894 = sum of:
0.036284894 = product of:
0.10885468 = sum of:
0.10885468 = weight(_text_:1990 in 5113) [ClassicSimilarity], result of:
0.10885468 = score(doc=5113,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.78733444 = fieldWeight in 5113, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.078125 = fieldNorm(doc=5113)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Nachrichten für Dokumentation. 41(1990) H.1, S.9-12
- Year
- 1990
-
Mandl, T.: Evaluierung im Information Retrieval : die Hildesheimer Antwort auf aktuelle Herausforderungen der globalisierten Informationsgesellschaft (2010)
0.00
0.0032694556 = product of:
0.032694556 = sum of:
0.032694556 = product of:
0.09808366 = sum of:
0.09808366 = weight(_text_:2010 in 4011) [ClassicSimilarity], result of:
0.09808366 = score(doc=4011,freq=5.0), product of:
0.14672957 = queryWeight, product of:
4.7831497 = idf(docFreq=1005, maxDocs=44218)
0.03067635 = queryNorm
0.6684655 = fieldWeight in 4011, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.7831497 = idf(docFreq=1005, maxDocs=44218)
0.0625 = fieldNorm(doc=4011)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Information - Wissenschaft und Praxis. 61(2010) H.6/7, S.341-348
- Year
- 2010
-
Blair, D.C.; Maron, M.E.: Full-text information retrieval : further analysis and clarification (1990)
0.00
0.0029027916 = product of:
0.029027916 = sum of:
0.029027916 = product of:
0.08708375 = sum of:
0.08708375 = weight(_text_:1990 in 2046) [ClassicSimilarity], result of:
0.08708375 = score(doc=2046,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.62986755 = fieldWeight in 2046, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.0625 = fieldNorm(doc=2046)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Information processing and management. 26(1990), S.437-447
- Year
- 1990
-
Bauer, G.; Schneider, C.: PADOK-II : Untersuchungen zur Volltextproblematik und zur interpretativen Analyse der Retrievalprotokolle (1990)
0.00
0.0029027916 = product of:
0.029027916 = sum of:
0.029027916 = product of:
0.08708375 = sum of:
0.08708375 = weight(_text_:1990 in 4164) [ClassicSimilarity], result of:
0.08708375 = score(doc=4164,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.62986755 = fieldWeight in 4164, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.0625 = fieldNorm(doc=4164)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Nachrichten für Dokumentation. 41(1990) H.1, S.21-26
- Year
- 1990
-
Krause, J.; Womser-Hacker, C.: PADOK-II : Retrievaltests zur Bewertung von Volltextindexierungsvarianten für das deutsche Patentinformationssystem (1990)
0.00
0.0029027916 = product of:
0.029027916 = sum of:
0.029027916 = product of:
0.08708375 = sum of:
0.08708375 = weight(_text_:1990 in 2653) [ClassicSimilarity], result of:
0.08708375 = score(doc=2653,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.62986755 = fieldWeight in 2653, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.0625 = fieldNorm(doc=2653)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Nachrichten für Dokumentation. 41(1990) H.1, S.13-19
- Year
- 1990
-
Al-Maskari, A.; Sanderson, M.: ¬A review of factors influencing user satisfaction in information retrieval (2010)
0.00
0.0028607734 = product of:
0.028607734 = sum of:
0.028607734 = product of:
0.0858232 = sum of:
0.0858232 = weight(_text_:2010 in 3447) [ClassicSimilarity], result of:
0.0858232 = score(doc=3447,freq=5.0), product of:
0.14672957 = queryWeight, product of:
4.7831497 = idf(docFreq=1005, maxDocs=44218)
0.03067635 = queryNorm
0.5849073 = fieldWeight in 3447, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.7831497 = idf(docFreq=1005, maxDocs=44218)
0.0546875 = fieldNorm(doc=3447)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Journal of the American Society for Information Science and Technology. 61(2010) no.5, S.859-868
- Year
- 2010
-
Vechtomova, O.: Facet-based opinion retrieval from blogs (2010)
0.00
0.0028607734 = product of:
0.028607734 = sum of:
0.028607734 = product of:
0.0858232 = sum of:
0.0858232 = weight(_text_:2010 in 4225) [ClassicSimilarity], result of:
0.0858232 = score(doc=4225,freq=5.0), product of:
0.14672957 = queryWeight, product of:
4.7831497 = idf(docFreq=1005, maxDocs=44218)
0.03067635 = queryNorm
0.5849073 = fieldWeight in 4225, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.7831497 = idf(docFreq=1005, maxDocs=44218)
0.0546875 = fieldNorm(doc=4225)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Information processing and management. 46(2010) no.1, S.71-88
- Year
- 2010
-
Salton, G.: ¬The Smart environment for retrieval systeme valuation : advantages and problem areas (1981)
0.00
0.002849479 = product of:
0.028494788 = sum of:
0.028494788 = product of:
0.08548436 = sum of:
0.08548436 = weight(_text_:problem in 3159) [ClassicSimilarity], result of:
0.08548436 = score(doc=3159,freq=2.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.6565352 = fieldWeight in 3159, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.109375 = fieldNorm(doc=3159)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
-
Leppanen, E.: Homografiongelma tekstihaussa ja homografien disambiguoinnin vaikutukset (1996)
0.00
0.002730698 = product of:
0.027306981 = sum of:
0.027306981 = product of:
0.081920944 = sum of:
0.081920944 = weight(_text_:problem in 27) [ClassicSimilarity], result of:
0.081920944 = score(doc=27,freq=10.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.6291675 = fieldWeight in 27, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.046875 = fieldNorm(doc=27)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Abstract
- Homonymy is known to often cause false drops in free text searching in a full text database. The problem is quite common and difficult to avoid in Finnish, but nobody has examined it before. Reports on a study that examined the frequency of, and solutions to, the homonymy problem, based on searches made in a Finnish full text database containing about 55.000 newspaper articles. The results indicate that homonymy is not a very serious problem in full text searching, with only about 1 search result set out of 4 containing false drops caused by homonymy. Several other reasons for nonrelevance were much more common. However, in some set results there were a considerable number of homonymy errors, so the number seems to be very random. A study was also made into whether homonyms can be disambiguated by syntactic analysis. The result was that 75,2% of homonyms were disambiguated by this method. Verb homonyms were considerably easier to disambiguate than substantives. Although homonymy is not a very big problem it could perhaps easily be eliminated if there was a suitable syntactic analyzer in the IR system
- Footnote
- Übers. d. Titels: The homonymy problem in free text searching and the results of homonymy disambiguation
-
Spink, A.; Greisdorf, H.: Users' partial relevance judgements during online searching (1997)
0.00
0.0024677215 = product of:
0.024677215 = sum of:
0.024677215 = product of:
0.07403164 = sum of:
0.07403164 = weight(_text_:problem in 623) [ClassicSimilarity], result of:
0.07403164 = score(doc=623,freq=6.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.5685763 = fieldWeight in 623, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.0546875 = fieldNorm(doc=623)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Abstract
- Reports results of research to examine users conducting their initial online search on a particular information problem. Findings from 3 separate studies of relevance judgements by 44 initial search users were examined, including 2 studies of 13 end users and a study of 18 user engaged in mediated online searches. Number of items was judged on the scale 'relevant', 'patially relevant' and 'not rlevant'. Results suggest that: a relationship exists between partially rlevant items retrieved anch changes in the users' information problem or question during an information seeking process; partial relevance judgements play an important role for users in the early stages of seeking information on a particular information problem; and 'highly' relevant items may or may not be the only items useful at the early stages of users' information seeking processes
-
Blair, D.C.; Maron, M.E.: ¬An evaluation of retrieval effectiveness for a full-text document-retrieval system (1985)
0.00
0.0022948582 = product of:
0.022948582 = sum of:
0.022948582 = product of:
0.06884574 = sum of:
0.06884574 = weight(_text_:1990 in 1345) [ClassicSimilarity], result of:
0.06884574 = score(doc=1345,freq=2.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.497954 = fieldWeight in 1345, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.078125 = fieldNorm(doc=1345)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- 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.
-
Becks, D.; Mandl, T.; Womser-Hacker, C.: Spezielle Anforderungen bei der Evaluierung von Patent-Retrieval-Systemen (2010)
0.00
0.0022159456 = product of:
0.022159455 = sum of:
0.022159455 = product of:
0.066478364 = sum of:
0.066478364 = weight(_text_:2010 in 4667) [ClassicSimilarity], result of:
0.066478364 = score(doc=4667,freq=3.0), product of:
0.14672957 = queryWeight, product of:
4.7831497 = idf(docFreq=1005, maxDocs=44218)
0.03067635 = queryNorm
0.45306724 = fieldWeight in 4667, product of:
1.7320508 = tf(freq=3.0), with freq of:
3.0 = termFreq=3.0
4.7831497 = idf(docFreq=1005, maxDocs=44218)
0.0546875 = fieldNorm(doc=4667)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Year
- 2010
-
Yerbury, H.; Parker, J.: Novice searchers' use of familiar structures in searching bibliographic information retrieval systems (1998)
0.00
0.0021151898 = product of:
0.021151898 = sum of:
0.021151898 = product of:
0.06345569 = sum of:
0.06345569 = weight(_text_:problem in 2874) [ClassicSimilarity], result of:
0.06345569 = score(doc=2874,freq=6.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.48735106 = fieldWeight in 2874, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.046875 = fieldNorm(doc=2874)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Abstract
- Reports results of a study of the use of metaphors as problem solving mechanisms by novice searchers of bibliographic databases. Metaphors provide a framework or 'familiar structure' of credible associations within which relationships in other domains may be considered. 28 students taking an undergraduate course in information retrieval at Sydney University of Technology, were recorded as they 'talked through' a search on a bibliographic retrieval system. The transcripts were analyzed using conventional methods and the NUDIST software package for qualitative research. A range of metaphors was apparent from the language use by students in the search process. Those which predominated were: a journey; human interaction; a building or matching process; a problem solving process, and a search for a quantity. Many of the studentes experiencing the interaction as a problem solving process or a search for quantity perceived the outcomes as successful. Concludes that when memory for operating methods and procedures is incomplete an unconscious approach through the use of a conceptual system which is consonant with the task at hand may also lead to success in bibliographic searching
-
Kazai, G.; Lalmas, M.: ¬The overlap problem in content-oriented XML retrieval evaluation (2004)
0.00
0.0020353422 = product of:
0.020353422 = sum of:
0.020353422 = product of:
0.06106026 = sum of:
0.06106026 = weight(_text_:problem in 4083) [ClassicSimilarity], result of:
0.06106026 = score(doc=4083,freq=2.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.46895373 = fieldWeight in 4083, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.078125 = fieldNorm(doc=4083)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
-
Van der Walt, H.E.A.; Brakel, P.A. van: Method for the evaluation of the retrieval effectiveness of a CD-ROM bibliographic database (1991)
0.00
0.0020148864 = product of:
0.020148862 = sum of:
0.020148862 = product of:
0.060446583 = sum of:
0.060446583 = weight(_text_:problem in 3114) [ClassicSimilarity], result of:
0.060446583 = score(doc=3114,freq=4.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.46424055 = fieldWeight in 3114, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.0546875 = fieldNorm(doc=3114)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Abstract
- Addresses the problem of how potential users of CD-ROM data bases can objectively establish which version of the same data base is best suited for a specific situation. The problem was solved by applying the retrieval effectiveness of current on-line data base search systems as a standard measurement. 5 search queries from the medical sciences were presented by experienced users of MEDLINE. Search strategies were written for both DIALOG and DATA-STAR. Search results were compared to create a recall base from documents present in both on-line searches. This recall base was then used to establish the retrieval and precision of 4 CD-ROM data bases: MEDLINE, Compact Cambrdge MEDLINE, DIALOG OnDisc, Comprehensive MEDLINE/EBSCO
