Search (55 results, page 2 of 3)

  • × theme_ss:"Indexierungsstudien"
  • × type_ss:"a"
  1. Krovetz, R.; Croft, W.B.: Lexical ambiguity and information retrieval (1992) 0.01 
    0.0056708455 = product of:
  0.022683382 = sum of:
    0.022683382 = weight(_text_:information in 4028) [ClassicSimilarity], result of:
      0.022683382 = score(doc=4028,freq=8.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.27153665 = fieldWeight in 4028, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4028)
  0.25 = coord(1/4)
    Abstract
    Reports on an analysis of lexical ambiguity in information retrieval text collections and on experiments to determine the utility of word meanings for separating relevant from nonrelevant documents. Results show that there is considerable ambiguity even in a specialised database. Word senses provide a significant separation between relevant and nonrelevant documents, but several factors contribute to determining whether disambiguation will make an improvement in performance such as: resolving lexical ambiguity was found to have little impact on retrieval effectiveness for documents that have many words in common with the query. Discusses other uses of word sense disambiguation in an information retrieval context
    Source
    ACM transactions on information systems. 10(1992) no.2, S.115-141
  2. Booth, A.: How consistent is MEDLINE indexing? (1990) 0.01 
    0.0056414027 = product of:
  0.02256561 = sum of:
    0.02256561 = product of:
      0.04513122 = sum of:
        0.04513122 = weight(_text_:22 in 3510) [ClassicSimilarity], result of:
          0.04513122 = score(doc=3510,freq=2.0), product of:
            0.16663991 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047586527 = queryNorm
            0.2708308 = fieldWeight in 3510, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3510)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Source
    Health libraries review. 7(1990) no.1, S.22-26
  3. Neshat, N.; Horri, A.: ¬A study of subject indexing consistency between the National Library of Iran and Humanities Libraries in the area of Iranian studies (2006) 0.01 
    0.0056414027 = product of:
  0.02256561 = sum of:
    0.02256561 = product of:
      0.04513122 = sum of:
        0.04513122 = weight(_text_:22 in 230) [ClassicSimilarity], result of:
          0.04513122 = score(doc=230,freq=2.0), product of:
            0.16663991 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047586527 = queryNorm
            0.2708308 = fieldWeight in 230, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=230)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Date
    4. 1.2007 10:22:26
  4. David, C.; Giroux, L.; Bertrand-Gastaldy, S.; Lanteigne, D.: Indexing as problem solving : a cognitive approach to consistency (1995) 0.01 
    0.0056126816 = product of:
  0.022450726 = sum of:
    0.022450726 = weight(_text_:information in 3833) [ClassicSimilarity], result of:
      0.022450726 = score(doc=3833,freq=6.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.2687516 = fieldWeight in 3833, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=3833)
  0.25 = coord(1/4)
    Imprint
    Medford, NJ : Learned Information
    Source
    Forging new partnerships in information: converging technologies. Proceedings of the 58th Annual Meeting of the American Society for Information Science, ASIS'95, Chicago, IL, 9-12 October 1995. Ed.: T. Kinney
  5. Hersh, W.R.; Hickam, D.H.: ¬A comparison of two methods for indexing and retrieval from a full-text medical database (1992) 0.00 
    0.0049110963 = product of:
  0.019644385 = sum of:
    0.019644385 = weight(_text_:information in 4526) [ClassicSimilarity], result of:
      0.019644385 = score(doc=4526,freq=6.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.23515764 = fieldWeight in 4526, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4526)
  0.25 = coord(1/4)
    Abstract
    Reports results of a study of 2 information retrieval systems on a 2.000 document full text medical database. The first system, SAPHIRE, features concept based automatic indexing and statistical retrieval techniques, while the second system, SWORD, features traditional word based Boolean techniques, 16 medical students at Oregon Health Sciences Univ. each performed 10 searches and their results, recorded in terms of recall and precision, showed nearly equal performance for both systems. SAPHIRE was also compared with a version of SWORD modified to use automatic indexing and ranked retrieval. Using batch input of queries, the latter method performed slightly better
    Imprint
    Medford, NJ : Learned Information Inc.
    Source
    Proceedings of the 55th Annual Meeting of the American Society for Information Science, Pittsburgh, 26.-29.10.92. Ed.: D. Shaw
  6. Cleverdon, C.W.: ¬The Cranfield tests on index language devices (1967) 0.00 
    0.004860725 = product of:
  0.0194429 = sum of:
    0.0194429 = weight(_text_:information in 1957) [ClassicSimilarity], result of:
      0.0194429 = score(doc=1957,freq=2.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.23274569 = fieldWeight in 1957, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=1957)
  0.25 = coord(1/4)
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.47-58.
  7. Saracevic, T.: Measuring the degree of agreement between searchers (1984) 0.00 
    0.004860725 = product of:
  0.0194429 = sum of:
    0.0194429 = weight(_text_:information in 2410) [ClassicSimilarity], result of:
      0.0194429 = score(doc=2410,freq=2.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.23274569 = fieldWeight in 2410, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=2410)
  0.25 = coord(1/4)
    Source
    Challenges to an information society : proceedings of the 47th ASIS annual Meeting, Philadelphia, Pennsylvania, October 21-25, 1984. Ed.: Barbara Flood
  8. Edwards, S.: Indexing practices at the National Agricultural Library (1993) 0.00 
    0.0045827352 = product of:
  0.018330941 = sum of:
    0.018330941 = weight(_text_:information in 555) [ClassicSimilarity], result of:
      0.018330941 = score(doc=555,freq=4.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.21943474 = fieldWeight in 555, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=555)
  0.25 = coord(1/4)
    Abstract
    This article discusses indexing practices at the National Agriculture Library. Indexers at NAL scan over 2,200 incoming journals for input into its bibliographic database, AGRICOLA. The National Agriculture Library's coverage extends worldwide covering a broad range of agriculture subjects. Access to AGRICOLA occurs in several ways: onsite search, commercial vendors, Dialog Information Services, Inc. and BRS Information Technologies. The National Agricultural Library uses CAB THESAURUS to describe the subject content of articles in AGRICOLA.
  9. Evedove, P.R. Dal; Evedove Tartarotti, R.C. Dal; Lopes Fujita, M.S.: Verbal protocols in Brazilian information science : a perspective from indexing studies (2018) 0.00 
    0.0045827352 = product of:
  0.018330941 = sum of:
    0.018330941 = weight(_text_:information in 4783) [ClassicSimilarity], result of:
      0.018330941 = score(doc=4783,freq=4.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.21943474 = fieldWeight in 4783, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=4783)
  0.25 = coord(1/4)
    Source
    Challenges and opportunities for knowledge organization in the digital age: proceedings of the Fifteenth International ISKO Conference, 9-11 July 2018, Porto, Portugal / organized by: International Society for Knowledge Organization (ISKO), ISKO Spain and Portugal Chapter, University of Porto - Faculty of Arts and Humanities, Research Centre in Communication, Information and Digital Culture (CIC.digital) - Porto. Eds.: F. Ribeiro u. M.E. Cerveira
  10. David, C.; Giroux, L.; Bertrand-Gastaldy, S.; Lanteigne, D.: Indexing as problem solving : a cognitive approach to consistency (1995) 0.00 
    0.004209511 = product of:
  0.016838044 = sum of:
    0.016838044 = weight(_text_:information in 3609) [ClassicSimilarity], result of:
      0.016838044 = score(doc=3609,freq=6.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.20156369 = fieldWeight in 3609, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=3609)
  0.25 = coord(1/4)
    Imprint
    Alberta : Alberta University, School of Library and Information Studies
    Source
    Connectedness: information, systems, people, organizations. Proceedings of CAIS/ACSI 95, the proceedings of the 23rd Annual Conference of the Canadian Association for Information Science. Ed. by Hope A. Olson and Denis B. Ward
  11. Broxis, P.F.: ASSIA social science information service (1989) 0.00 
    0.0040506036 = product of:
  0.016202414 = sum of:
    0.016202414 = weight(_text_:information in 1511) [ClassicSimilarity], result of:
      0.016202414 = score(doc=1511,freq=2.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.19395474 = fieldWeight in 1511, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.078125 = fieldNorm(doc=1511)
  0.25 = coord(1/4)
  12. Subrahmanyam, B.: Library of Congress Classification numbers : issues of consistency and their implications for union catalogs (2006) 0.00 
    0.0040295734 = product of:
  0.016118294 = sum of:
    0.016118294 = product of:
      0.032236587 = sum of:
        0.032236587 = weight(_text_:22 in 5784) [ClassicSimilarity], result of:
          0.032236587 = score(doc=5784,freq=2.0), product of:
            0.16663991 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047586527 = queryNorm
            0.19345059 = fieldWeight in 5784, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5784)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Date
    10. 9.2000 17:38:22
  13. Deaves, J.C.; Pache, J.E.: Chemical and numerical indexing for the INSPEC database (1989) 0.00 
    0.004009893 = product of:
  0.016039573 = sum of:
    0.016039573 = weight(_text_:information in 2289) [ClassicSimilarity], result of:
      0.016039573 = score(doc=2289,freq=4.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.1920054 = fieldWeight in 2289, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2289)
  0.25 = coord(1/4)
    Abstract
    The wealth of chemical information on the INSPEC database is easily retrieved using the printed subject indexes to the associated abstract journals. However, this subject indexing is insufficient for machine retrieval, and free-text searching has special difficulties. An easy-to-use retrieval system has been developed which overcomes many problems, especially the retrieval of non-stoichiometric compositions, which are a feature solid-state chemistry. The scheme is limited to inorganic material, but allows flexibility and identification of dopants, interfaces and surfaces or substrates. At the same time, a system has been introduced for the online retrieval of numerical data included in the data base. This has successfully standardized the way in which such data is held for searching, enabling further refinement of searches where numerical information is significant
  14. Harter, S.P.; Cheng, Y.-R.: Colinked descriptors : improving vocabulary selection for end-user searching (1996) 0.00 
    0.0034370513 = product of:
  0.013748205 = sum of:
    0.013748205 = weight(_text_:information in 4216) [ClassicSimilarity], result of:
      0.013748205 = score(doc=4216,freq=4.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.16457605 = fieldWeight in 4216, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=4216)
  0.25 = coord(1/4)
    Abstract
    This article introduces a new concept and technique for information retrieval called 'colinked descriptors'. Borrowed from an analogous idea in bibliometrics - cocited references - colinked descriptors provide a theory and method for identifying search terms that, by hypothesis, will be superior to those entered initially by a searcher. The theory suggests a means of moving automatically from 2 or more initial search terms, to other terms that should be superior in retrieval performance to the 2 original terms. A research project designed to test this colinked descriptor hypothesis is reported. The results suggest that the approach is effective, although methodological problems in testing the idea are reported. Algorithms to generate colinked descriptors can be incorporated easily into system interfaces, front-end or pre-search systems, or help software, in any database that employs a thesaurus. The potential use of colinked descriptors is a strong argument for building richer and more complex thesauri that reflect as many legitimate links among descriptors as possible
    Source
    Journal of the American Society for Information Science. 47(1996) no.4, S.311-325
  15. Braam, R.R.; Bruil, J.: Quality of indexing information : authors' views on indexing of their articles in chemical abstracts online CA-file (1992) 0.00 
    0.0034370513 = product of:
  0.013748205 = sum of:
    0.013748205 = weight(_text_:information in 2638) [ClassicSimilarity], result of:
      0.013748205 = score(doc=2638,freq=4.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.16457605 = fieldWeight in 2638, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=2638)
  0.25 = coord(1/4)
    Source
    Journal of information science. 18(1992) no.5, S.399-408
  16. Tonta, Y.: ¬A study of indexing consistency between Library of Congress and British Library catalogers (1991) 0.00 
    0.003240483 = product of:
  0.012961932 = sum of:
    0.012961932 = weight(_text_:information in 2277) [ClassicSimilarity], result of:
      0.012961932 = score(doc=2277,freq=2.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.1551638 = fieldWeight in 2277, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=2277)
  0.25 = coord(1/4)
    Abstract
    Indexing consistency between Library of Congress and British Library catalogers using the LCSH is compared.82 titles published in 1987 in the field of library and information science were identified for comparison, and for each title its LC subject headings, assigned by both LC and BL catalogers, were compared. By applying Hooper's 'consistency of a pair' equation, the average indexing consistency value was calculated for the 82 titles. The average indexing value between LC and BL catalogers is 16% for exact matches, and 36% for partial matches
  17. Prasher, R.G.: Evaluation of indexing system (1989) 0.00 
    0.003240483 = product of:
  0.012961932 = sum of:
    0.012961932 = weight(_text_:information in 4998) [ClassicSimilarity], result of:
      0.012961932 = score(doc=4998,freq=2.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.1551638 = fieldWeight in 4998, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=4998)
  0.25 = coord(1/4)
    Abstract
    Describes information system and its various components-index file construstion, query formulation and searching. Discusses an indexing system, and brings out the need for its evaluation. Explains the concept of the efficiency of indexing systems and discusses factors which control this efficiency. Gives criteria for evaluation. Discusses recall and precision ratios, as also noise ratio, novelty ratio, and exhaustivity and specificity and the impact of each on the efficiency of indexing system. Mention also various steps for evaluation.
  18. Soergel, D.: Indexing and retrieval performance : the logical evidence (1997) 0.00 
    0.003240483 = product of:
  0.012961932 = sum of:
    0.012961932 = weight(_text_:information in 578) [ClassicSimilarity], result of:
      0.012961932 = score(doc=578,freq=2.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.1551638 = fieldWeight in 578, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=578)
  0.25 = coord(1/4)
    Imprint
    The Hague : International Federation for Information and Documentation (FID)
  19. Ladewig, C.; Rieger, M.: Ähnlichkeitsmessung mit und ohne aspektische Indexierung (1998) 0.00 
    0.003240483 = product of:
  0.012961932 = sum of:
    0.012961932 = weight(_text_:information in 2526) [ClassicSimilarity], result of:
      0.012961932 = score(doc=2526,freq=2.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.1551638 = fieldWeight in 2526, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=2526)
  0.25 = coord(1/4)
    Source
    nfd Information - Wissenschaft und Praxis. 49(1998) H.8, S.459-462
  20. Saarti, J.: Consistency of subject indexing of novels by public library professionals and patrons (2002) 0.00 
    0.003240483 = product of:
  0.012961932 = sum of:
    0.012961932 = weight(_text_:information in 4473) [ClassicSimilarity], result of:
      0.012961932 = score(doc=4473,freq=2.0), product of:
        0.083537094 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047586527 = queryNorm
        0.1551638 = fieldWeight in 4473, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=4473)
  0.25 = coord(1/4)
    Abstract
    The paper discusses the consistency of fiction indexing of library professionals and patrons based on an empirical test. Indexing was carried out with a Finnish fictional thesaurus and all of the test persons indexed the same five novels. The consistency of indexing was determined to be low; several reasons are postulated. Also an algorithm for typified indexing of fiction is given as well as some suggestions for the development of fiction information retrieval systems and content representation.

Authors

Years

Languages

  • e 53
  • chi 1
  • d 1
  • More… Less…

Themes