Search (49 results, page 1 of 3)

  • × theme_ss:"Retrievalstudien"
  1. Large, A.; Beheshti, J.; Breuleux, A.: ¬A comparison of information retrieval from print and CD-ROM versions of an encyclopedia by elementary school students (1994) 0.01 
    0.008676 = product of:
  0.026028 = sum of:
    0.026028 = product of:
      0.104112 = sum of:
        0.104112 = weight(_text_:cd in 1015) [ClassicSimilarity], result of:
          0.104112 = score(doc=1015,freq=8.0), product of:
            0.16313457 = queryWeight, product of:
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.03953887 = queryNorm
            0.638197 = fieldWeight in 1015, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1015)
      0.25 = coord(1/4)
  0.33333334 = coord(1/3)
    Abstract
    Describes an experiment using 48 sixth-grade students to compare retrieval techniques using the print and CD-ROM versions of Compton's Encyclopedia. Four queries of defferent complexity (measured by the numer of terms present) were searched by the students after a short training session. The searches were timed and the retrieval steps and search terms were noted. The searches were no faster on the CD-ROM than the print version, but in both cases time was related directly to the number of terms involved. The students coped well with the CD-ROM interface and its several retrieval paths
  2. Armstrong, C.J.; Medawar, K.: Investigation into the quality of databases in general use in the UK (1996) 0.01 
    0.008676 = product of:
  0.026028 = sum of:
    0.026028 = product of:
      0.104112 = sum of:
        0.104112 = weight(_text_:cd in 6768) [ClassicSimilarity], result of:
          0.104112 = score(doc=6768,freq=8.0), product of:
            0.16313457 = queryWeight, product of:
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.03953887 = queryNorm
            0.638197 = fieldWeight in 6768, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.0546875 = fieldNorm(doc=6768)
      0.25 = coord(1/4)
  0.33333334 = coord(1/3)
    Abstract
    Reports on a Centre for Information Quality Management (CIQM) BLRRD funded project which investigated the quality of databases in general use in the UK. Gives a literature review of quality in library and information services. Reports the results of a CIQM questionnaire survey on the quality problems of databases and their affect on users. Carries out databases evaluations of: INSPEC on ESA-IRS, INSPEC on KR Data-Star, INSPEC on UMI CD-ROM, BNB on CD-ROM, and Information Science Abstracts Plus CD-ROM. Sets out a methodology for evaluation of bibliographic databases
    Object
    BNB-CD
  3. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.01 
    0.0083330665 = product of:
  0.0249992 = sum of:
    0.0249992 = product of:
      0.0749976 = sum of:
        0.0749976 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
          0.0749976 = score(doc=262,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.5416616 = fieldWeight in 262, 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=262)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Date
    20.10.2000 12:22:23
  4. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.01 
    0.0083330665 = product of:
  0.0249992 = sum of:
    0.0249992 = product of:
      0.0749976 = sum of:
        0.0749976 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
          0.0749976 = score(doc=6418,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.5416616 = fieldWeight in 6418, 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=6418)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Source
    Online. 22(1998) no.6, S.57-58
  5. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.01 
    0.0083330665 = product of:
  0.0249992 = sum of:
    0.0249992 = product of:
      0.0749976 = sum of:
        0.0749976 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
          0.0749976 = score(doc=6438,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.5416616 = fieldWeight in 6438, 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=6438)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Date
    11. 8.2001 16:22:19
  6. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.01 
    0.0083330665 = product of:
  0.0249992 = sum of:
    0.0249992 = product of:
      0.0749976 = sum of:
        0.0749976 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
          0.0749976 = score(doc=5089,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = 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)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Date
    22. 7.2006 18:43:54
  7. Kaltenborn, K.-F.: Endnutzerrecherchen in der CD-ROM-Datenbank Medline : T.1: Evaluations- und Benutzerforschung über Nutzungscharakteristika, Bewertung der Rechercheergebnisse und künftige Informationsgewinnung; T.2: Evaluations- und Benutzerforschung über Recherchequalität und Nutzer-Computer/Datenbank-Interaktion (1991) 0.01 
    0.00831434 = product of:
  0.02494302 = sum of:
    0.02494302 = product of:
      0.09977208 = sum of:
        0.09977208 = weight(_text_:cd in 5105) [ClassicSimilarity], result of:
          0.09977208 = score(doc=5105,freq=10.0), product of:
            0.16313457 = queryWeight, product of:
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.03953887 = queryNorm
            0.6115937 = fieldWeight in 5105, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.046875 = fieldNorm(doc=5105)
      0.25 = coord(1/4)
  0.33333334 = coord(1/3)
    Abstract
    Die Einführung von CD-ROM Datenbanken als neue Informationstechnologie hat die Formen der Informationsgewinnung in bestimmten wissenschaftlichen Fachgebieten grundlegend geändert. Der Beitrag berichtet über Ergebnisse wissenschaftlicher Begleitforschung bei Endnutzerrecherchen in der CD-ROM-Version der Datenbank MEDLINE. Hierzu wurden drei verschiedene Erhebungen durchgeführt. Hiernach ist die überwiegende Zahl der Endnutzer (89,3%) mit dem jeweiligen Rechercheresultat zufrieden, wobei Benutzer mit geringer Rechercheerfahrung eine höhere Zufriedenheitsrate erreichen als Benutzer mit umfangreicheren Recherchekenntnissen. Die Gründe zur Nutzung von CD-ROM-Systemen resultieren voriwegend aus der klinischen Alltagsroutine oder täglichen Forschungspraxis, während vermittelte Online-Literatursuchen tendenziell häufiger im Zusammenhang mit einmaligen Ereignissen der wissenschaftlichen Aus- und Weiterbildung stehen. Die selbständige CD-ROM Literaturrecherche stellt für die befragten Ärzte und Wissenschaftler die bevorzugte Methode der Informationsgewinnung dar. Die analysierten Endnutzerrecherchen weisen allerdings Fehler und Defizite hinsichtlich einer optimalen Suchstrategie auf, die zu unbemerktn Informationsverlusten und zu Fehlbeurteilungen des wissenschaftlichen Kenntnisstandes führen
  8. 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) 0.01 
    0.0075136367 = product of:
  0.02254091 = sum of:
    0.02254091 = product of:
      0.09016364 = sum of:
        0.09016364 = weight(_text_:cd in 3114) [ClassicSimilarity], result of:
          0.09016364 = score(doc=3114,freq=6.0), product of:
            0.16313457 = queryWeight, product of:
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.03953887 = queryNorm
            0.55269486 = fieldWeight in 3114, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3114)
      0.25 = coord(1/4)
  0.33333334 = coord(1/3)
    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
  9. Crawford, G.A.: Varieties of access : a comparison of databases via Z39.50, FirstSearch and CD-ROM (1996) 0.01 
    0.0070112674 = product of:
  0.021033801 = sum of:
    0.021033801 = product of:
      0.084135205 = sum of:
        0.084135205 = weight(_text_:cd in 5655) [ClassicSimilarity], result of:
          0.084135205 = score(doc=5655,freq=4.0), product of:
            0.16313457 = queryWeight, product of:
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.03953887 = queryNorm
            0.5157411 = fieldWeight in 5655, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.0625 = fieldNorm(doc=5655)
      0.25 = coord(1/4)
  0.33333334 = coord(1/3)
    Abstract
    3 versions of 2 databases were used as examples for examining indexing, printing/downloading capabilities, and interface design in order to provide the most useful resources to the faculty, staff, and students of Penn State Harrisburg. The databases studied were ABI/Inform and PAIS available using a Z39.50 interface from the library's OPAC, FirstSearch from OCLC, and CD-ROMs from UMI and SilverPlatter
  10. Jascó, P.: CD-ROM commentaries : the speed of the retrieval software (1996) 0.01 
    0.0061348593 = product of:
  0.018404577 = sum of:
    0.018404577 = product of:
      0.07361831 = sum of:
        0.07361831 = weight(_text_:cd in 6992) [ClassicSimilarity], result of:
          0.07361831 = score(doc=6992,freq=4.0), product of:
            0.16313457 = queryWeight, product of:
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.03953887 = queryNorm
            0.45127347 = fieldWeight in 6992, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.0546875 = fieldNorm(doc=6992)
      0.25 = coord(1/4)
  0.33333334 = coord(1/3)
    Abstract
    Smart retrieval software can have more impact on response time than a faster CD-ROM drive. This can be shown easily now that more commerical databases are being released in several versions with practically identical content but different software. Illustrates this with 3 versions of the PAIS database, comparing the original OCSI, SPIRS software, and EBSCO software. Whereas the OCSI version took no more than a few seconds, the other 2 versions took around 10times longer, occasionally in the order of minutes. Considers how the construction of these products can account for such speed differences. However, search facilities and other features should be considered as well as speed. Offers advice for testing retrieval software
  11. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.01 
    0.0059521906 = product of:
  0.017856572 = sum of:
    0.017856572 = product of:
      0.05356971 = sum of:
        0.05356971 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
          0.05356971 = score(doc=3103,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.38690117 = fieldWeight in 3103, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.078125 = fieldNorm(doc=3103)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Date
    27. 2.1999 20:55:22
  12. Ng, K.B.; Loewenstern, D.; Basu, C.; Hirsh, H.; Kantor, P.B.: Data fusion of machine-learning methods for the TREC5 routing tak (and other work) (1997) 0.01 
    0.0059521906 = product of:
  0.017856572 = sum of:
    0.017856572 = product of:
      0.05356971 = sum of:
        0.05356971 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
          0.05356971 = score(doc=3107,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.38690117 = fieldWeight in 3107, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.078125 = fieldNorm(doc=3107)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Date
    27. 2.1999 20:59:22
  13. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.01 
    0.0059521906 = product of:
  0.017856572 = sum of:
    0.017856572 = product of:
      0.05356971 = sum of:
        0.05356971 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
          0.05356971 = score(doc=2417,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.38690117 = fieldWeight in 2417, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.078125 = fieldNorm(doc=2417)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Pages
    S.22-25
  14. Harman, D.K.: ¬The first text retrieval conference : TREC-1, 1992 (1993) 0.00 
    0.0049577146 = product of:
  0.014873143 = sum of:
    0.014873143 = product of:
      0.059492573 = sum of:
        0.059492573 = weight(_text_:cd in 1317) [ClassicSimilarity], result of:
          0.059492573 = score(doc=1317,freq=2.0), product of:
            0.16313457 = queryWeight, product of:
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.03953887 = queryNorm
            0.36468402 = fieldWeight in 1317, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.125929 = idf(docFreq=1940, maxDocs=44218)
              0.0625 = fieldNorm(doc=1317)
      0.25 = coord(1/4)
  0.33333334 = coord(1/3)
    Abstract
    Reports on the 1st Text Retrieval Conference (TREC-1) held in Rockville, MD, 4-6 Nov. 1992. The TREC experiment is being run by the National Institute of Standards and Technology to allow information retrieval researchers to scale up from small collection of data to larger sized experiments. Gropus of researchers have been provided with text documents compressed on CD-ROM. They used experimental retrieval system to search the text and evaluate the results
  15. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.00 
    0.0047617527 = product of:
  0.014285257 = sum of:
    0.014285257 = product of:
      0.04285577 = sum of:
        0.04285577 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.04285577 = score(doc=5002,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.30952093 = fieldWeight in 5002, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=5002)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Date
    19. 3.1996 11:22:12
  16. Sanderson, M.: ¬The Reuters test collection (1996) 0.00 
    0.0047617527 = product of:
  0.014285257 = sum of:
    0.014285257 = product of:
      0.04285577 = sum of:
        0.04285577 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
          0.04285577 = score(doc=6971,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.30952093 = fieldWeight in 6971, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=6971)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    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
  17. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.00 
    0.0047617527 = product of:
  0.014285257 = sum of:
    0.014285257 = product of:
      0.04285577 = sum of:
        0.04285577 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
          0.04285577 = score(doc=744,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.30952093 = fieldWeight in 744, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=744)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Date
    1. 8.1996 22:01:00
  18. ¬The Fifth Text Retrieval Conference (TREC-5) (1997) 0.00 
    0.0047617527 = product of:
  0.014285257 = sum of:
    0.014285257 = product of:
      0.04285577 = sum of:
        0.04285577 = weight(_text_:22 in 3087) [ClassicSimilarity], result of:
          0.04285577 = score(doc=3087,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.30952093 = fieldWeight in 3087, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=3087)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Abstract
    Proceedings of the 5th TREC-confrerence held in Gaithersburgh, Maryland, Nov 20-22, 1996. Aim of the conference was discussion on retrieval techniques for large test collections. Different research groups used different techniques, such as automated thesauri, term weighting, natural language techniques, relevance feedback and advanced pattern matching, for information retrieval from the same large database. This procedure makes it possible to compare the results. The proceedings include papers, tables of the system results, and brief system descriptions including timing and storage information
  19. Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998) 0.00 
    0.0047617527 = product of:
  0.014285257 = sum of:
    0.014285257 = product of:
      0.04285577 = sum of:
        0.04285577 = weight(_text_:22 in 3572) [ClassicSimilarity], result of:
          0.04285577 = score(doc=3572,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.30952093 = fieldWeight in 3572, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=3572)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Source
    Online. 22(1998) no.3, S.24-26,28
  20. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.00 
    0.0047617527 = product of:
  0.014285257 = sum of:
    0.014285257 = product of:
      0.04285577 = sum of:
        0.04285577 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
          0.04285577 = score(doc=261,freq=2.0), product of:
            0.13845839 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03953887 = queryNorm
            0.30952093 = fieldWeight in 261, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=261)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)
    Abstract
    Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht

Authors

Years

Languages

  • e 42
  • d 4
  • f 1
  • sp 1
  • More… Less…

Types

  • a 44
  • s 3
  • m 2
  • r 1
  • More… Less…

Themes