Search (24 results, page 1 of 2)

  • × theme_ss:"Volltextretrieval"
  1. Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989) 0.02 
    0.015769763 = product of:
  0.06307905 = sum of:
    0.06307905 = sum of:
      0.02516541 = weight(_text_:research in 3564) [ClassicSimilarity], result of:
        0.02516541 = score(doc=3564,freq=2.0), product of:
          0.13306029 = queryWeight, product of:
            2.8529835 = idf(docFreq=6931, maxDocs=44218)
            0.046639 = queryNorm
          0.18912788 = fieldWeight in 3564, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.8529835 = idf(docFreq=6931, maxDocs=44218)
            0.046875 = fieldNorm(doc=3564)
      0.03791364 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
        0.03791364 = score(doc=3564,freq=2.0), product of:
          0.16332182 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046639 = queryNorm
          0.23214069 = fieldWeight in 3564, 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=3564)
  0.25 = coord(1/4)
    Abstract
    Searches conducted as part of the MEDLINE/Full-Text Research Project revealed that the full-text data bases of clinical medical journal articles (CCML (Comprehensive Core Medical Library) from BRS Information Technologies, and MEDIS from Mead Data Central) did not retrieve all the relevant citations. An analysis of the data indicated that 204 relevant citations were retrieved only by MEDLINE. A comparison of the strategies used on the full-text data bases with the text of the articles of these 204 citations revealed that 2 reasons contributed to these failure. The searcher often constructed a restrictive strategy which resulted in the loss of relevant documents; and as in other kinds of retrieval, the problems of natural language caused the loss of relevant documents.
    Date
    9. 1.1996 10:22:31
  2. Ojala, M.: Research into full-text retrieval (1990) 0.01 
    0.010485589 = product of:
  0.041942354 = sum of:
    0.041942354 = product of:
      0.08388471 = sum of:
        0.08388471 = weight(_text_:research in 576) [ClassicSimilarity], result of:
          0.08388471 = score(doc=576,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.6304263 = fieldWeight in 576, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.15625 = fieldNorm(doc=576)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
  3. DiMartino, D.; Zoe, L.R.: End-user full text searching : access or excess? (1996) 0.01 
    0.00838847 = product of:
  0.03355388 = sum of:
    0.03355388 = product of:
      0.06710776 = sum of:
        0.06710776 = weight(_text_:research in 7545) [ClassicSimilarity], result of:
          0.06710776 = score(doc=7545,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.504341 = fieldWeight in 7545, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.125 = fieldNorm(doc=7545)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Source
    Library and information science research. 18(1996) no.2, S.133-150
  4. Godby, J.: Two techniques for the identification of phrases in full text (1995) 0.01 
    0.007339911 = product of:
  0.029359644 = sum of:
    0.029359644 = product of:
      0.05871929 = sum of:
        0.05871929 = weight(_text_:research in 6829) [ClassicSimilarity], result of:
          0.05871929 = score(doc=6829,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.44129837 = fieldWeight in 6829, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.109375 = fieldNorm(doc=6829)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Source
    Annual review of OCLC research. 1995, S.28-31
  5. Shewale, N.G.: Information delivery of full-text databases in academic and research libraries using hypermedia (1998) 0.01 
    0.007339911 = product of:
  0.029359644 = sum of:
    0.029359644 = product of:
      0.05871929 = sum of:
        0.05871929 = weight(_text_:research in 3566) [ClassicSimilarity], result of:
          0.05871929 = score(doc=3566,freq=8.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.44129837 = fieldWeight in 3566, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3566)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Footnote
    Paper presented at the 5th National Convention for Automation of Libraries in Education and Research (CALIBER-98), at Bhubaneswar, 4-5 March 1998
    Source
    Information management in academic and research libraries: Proceedings of the 5th National convention for Automation of Libraries in Education and Research (CALIBER-98), Bhubaneswar, India, 4-5 March 1998. Ed. by M. Mahapatra et al
  6. Laegreid, J.A.: SIFT: a Norwegian information retrieval system (1993) 0.01 
    0.0063189403 = product of:
  0.025275761 = sum of:
    0.025275761 = product of:
      0.050551523 = sum of:
        0.050551523 = weight(_text_:22 in 7701) [ClassicSimilarity], result of:
          0.050551523 = score(doc=7701,freq=2.0), product of:
            0.16332182 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046639 = queryNorm
            0.30952093 = fieldWeight in 7701, 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=7701)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Date
    23. 1.1999 19:22:09
  7. Reinisch, F.: Wer suchet - der findet? : oder Die Überwindung der sprachlichen Grenzen bei der Suche in Volltextdatenbanken (2000) 0.01 
    0.0063189403 = product of:
  0.025275761 = sum of:
    0.025275761 = product of:
      0.050551523 = sum of:
        0.050551523 = weight(_text_:22 in 4919) [ClassicSimilarity], result of:
          0.050551523 = score(doc=4919,freq=2.0), product of:
            0.16332182 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046639 = queryNorm
            0.30952093 = fieldWeight in 4919, 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=4919)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Date
    22. 7.2000 17:48:06
  8. Zillmann, H.: OSIRIS und eLib : Information Retrieval und Search Engines in Full-text Databases (2001) 0.01 
    0.0063189403 = product of:
  0.025275761 = sum of:
    0.025275761 = product of:
      0.050551523 = sum of:
        0.050551523 = weight(_text_:22 in 5937) [ClassicSimilarity], result of:
          0.050551523 = score(doc=5937,freq=2.0), product of:
            0.16332182 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046639 = queryNorm
            0.30952093 = fieldWeight in 5937, 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=5937)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Date
    14. 6.2001 12:22:31
  9. Dambeck, H.; Engler, T.: Gesucht und gefunden : Neun Volltext-Suchprogramme für den Desktop (2002) 0.01 
    0.0063189403 = product of:
  0.025275761 = sum of:
    0.025275761 = product of:
      0.050551523 = sum of:
        0.050551523 = weight(_text_:22 in 1169) [ClassicSimilarity], result of:
          0.050551523 = score(doc=1169,freq=2.0), product of:
            0.16332182 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046639 = queryNorm
            0.30952093 = fieldWeight in 1169, 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=1169)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Source
    c't. 2002, H.22, S.190-197
  10. Sievert, M.C.: Full-text information retrieval : introduction (1996) 0.01 
    0.0052427943 = product of:
  0.020971177 = sum of:
    0.020971177 = product of:
      0.041942354 = sum of:
        0.041942354 = weight(_text_:research in 4719) [ClassicSimilarity], result of:
          0.041942354 = score(doc=4719,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.31521314 = fieldWeight in 4719, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.078125 = fieldNorm(doc=4719)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Abstract
    Introduces a special section devoted to full text information retrieval. Gives an overview of full text databases and research into them. There is a lack of a single definition of full text. Articles in the library related literature about full text have appeared with increasing frequnecy
  11. Wacholder, N.; Byrd, R.J.: Retrieving information from full text using linguistic knowledge (1994) 0.00 
    0.004448658 = product of:
  0.017794631 = sum of:
    0.017794631 = product of:
      0.035589263 = sum of:
        0.035589263 = weight(_text_:research in 8524) [ClassicSimilarity], result of:
          0.035589263 = score(doc=8524,freq=4.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.2674672 = fieldWeight in 8524, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046875 = fieldNorm(doc=8524)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Abstract
    Examines how techniques in the field of natural language processing can be applied to the analysis of text in information retrieval. State of the art text searching programs cannot distinguish, for example, between occurrences of the sickness, AIDS and aids as tool or between library school and school nor equate such terms as online or on-line which are variants of the same form. To make these distinction, systems must incorporate knowledge about the meaning of words in context. Research in natural language processing has concentrated on the automatic 'understanding' of language; how to analyze the grammatical structure and meaning of text. Although many asoects of this research remain experimental, describes how these techniques to recognize spelling variants, names, acronyms, and abbreviations
  12. Dubois, C.P.R.: Free text vs. controlled vocabulary; a reassessment (1987) 0.00 
    0.004194235 = product of:
  0.01677694 = sum of:
    0.01677694 = product of:
      0.03355388 = sum of:
        0.03355388 = weight(_text_:research in 2048) [ClassicSimilarity], result of:
          0.03355388 = score(doc=2048,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.2521705 = fieldWeight in 2048, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.0625 = fieldNorm(doc=2048)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Abstract
    Free text and controlled vocabulary searching can no longer be viewed as antagonistic techniques in information retrieval since they both display advantages and weaknesses dependent on a fairly wide range of context, with the option to use both increasingly favoured. An attempt is made to present a list of features associated with the two techniques and to suggest a methodology to assist in deciding on the optimal retrieval technique for a particular purpose. The relevance of the techniques in expert systems and full text contexts is also discussed. Finally, recommendations for further research are suggested, concentrating on survey techniques in real-life retrieval situations
  13. Paijmans, H.: Gravity wells of meaning : detecting information rich passages in scientific texts (1997) 0.00 
    0.004194235 = product of:
  0.01677694 = sum of:
    0.01677694 = product of:
      0.03355388 = sum of:
        0.03355388 = weight(_text_:research in 7444) [ClassicSimilarity], result of:
          0.03355388 = score(doc=7444,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.2521705 = fieldWeight in 7444, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.0625 = fieldNorm(doc=7444)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Abstract
    Presents research in which 4 term weigthing schemes were used to detect information rich passages in texts and the results compared. Demonstrates that word categories and frequency derived weights have a close correlation but that weighting according to the first mention theory or the cue method shows no correlation with frequency based weights
  14. Witt, M.: Au sujet des mots-clés (1997) 0.00 
    0.004194235 = product of:
  0.01677694 = sum of:
    0.01677694 = product of:
      0.03355388 = sum of:
        0.03355388 = weight(_text_:research in 1666) [ClassicSimilarity], result of:
          0.03355388 = score(doc=1666,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.2521705 = fieldWeight in 1666, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.0625 = fieldNorm(doc=1666)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Abstract
    Information research using keywords is largely ignored by readers but in medium sized libraries such as that of the City of Science and Industry (Paris), with a multimedia collection of some 200.000 documents, it is the most effective tool. The reader, however, needs guidance in using this technique, and in refining searches to reduce noise. Examples are given demonstrating how keyword searches can identify non-indexed material, documents in other languages, and collective authors
  15. Silva, E.M. da: Comparing the use of full text search between a conventional IR System and a DBMS (2018) 0.00 
    0.004194235 = product of:
  0.01677694 = sum of:
    0.01677694 = product of:
      0.03355388 = sum of:
        0.03355388 = weight(_text_:research in 4719) [ClassicSimilarity], result of:
          0.03355388 = score(doc=4719,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.2521705 = fieldWeight in 4719, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.0625 = fieldNorm(doc=4719)
      0.5 = coord(1/2)
  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
  16. Wildemuth, B.M.: Measures of success in searching a full-text fact base (1990) 0.00 
    0.0036699555 = product of:
  0.014679822 = sum of:
    0.014679822 = product of:
      0.029359644 = sum of:
        0.029359644 = weight(_text_:research in 2050) [ClassicSimilarity], result of:
          0.029359644 = score(doc=2050,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.22064918 = fieldWeight in 2050, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2050)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Source
    ASIS'90: Information in the year 2000, from research to applications. Proc. of the 53rd Annual Meeting of the American Society for Information Science, Toronto, Canada, 4.-8.11.1990. Ed. by Diana Henderson
  17. Bernard, M.: Modelling the efficient access to full-text information (1996) 0.00 
    0.0036699555 = product of:
  0.014679822 = sum of:
    0.014679822 = product of:
      0.029359644 = sum of:
        0.029359644 = weight(_text_:research in 5610) [ClassicSimilarity], result of:
          0.029359644 = score(doc=5610,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.22064918 = fieldWeight in 5610, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.0546875 = fieldNorm(doc=5610)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Abstract
    Describes a research goal set by many offices within the US Department of Energy. Reviews efficient full text searching techniques being developed to better understand and meet this goal. Classical computer human interaction (CHI) approaches provided by commercial information retrieval engines fail to contextualize information in ways that facilitates timely decision making. Discusses the uses of advanced CHI techniques in combination with deductive database technology to augment the weaknesses found in the presentation capabilities of information retrieval engines. Presents various techniques employed in a WWW based prototype system currently under development
  18. Albus, W.; Smulders, H.: Doeltreffend zoeken in volledige teksten : 1. full-text retrieval bij de HavenInformatieBank (1998) 0.00 
    0.0036699555 = product of:
  0.014679822 = sum of:
    0.014679822 = product of:
      0.029359644 = sum of:
        0.029359644 = weight(_text_:research in 1682) [ClassicSimilarity], result of:
          0.029359644 = score(doc=1682,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.22064918 = fieldWeight in 1682, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1682)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Abstract
    At Rotterdam Ports Authority in the Netherlands the Habour information database includes a press cuttings service and various online databases. To enable research staff to have direct access to information the POINT (Point Information Net) was begun in 1993. Using Verity software POINT provides simultaneously full text searching on a range of databases. The software uses current Web indexing technqiues to overcome the problems of excessive recall and low precision. A key element is the system's ability to recognise word combinations
  19. Huang, Y.-L.: ¬A theoretic and empirical research of cluster indexing for Mandarine Chinese full text document (1998) 0.00 
    0.0036699555 = product of:
  0.014679822 = sum of:
    0.014679822 = product of:
      0.029359644 = sum of:
        0.029359644 = weight(_text_:research in 513) [ClassicSimilarity], result of:
          0.029359644 = score(doc=513,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.22064918 = fieldWeight in 513, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.0546875 = fieldNorm(doc=513)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
  20. Blair, D.C.: Full text retrieval : Evaluation and implications (1986) 0.00 
    0.0031456763 = product of:
  0.012582705 = sum of:
    0.012582705 = product of:
      0.02516541 = sum of:
        0.02516541 = weight(_text_:research in 2047) [ClassicSimilarity], result of:
          0.02516541 = score(doc=2047,freq=2.0), product of:
            0.13306029 = queryWeight, product of:
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046639 = queryNorm
            0.18912788 = fieldWeight in 2047, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.8529835 = idf(docFreq=6931, maxDocs=44218)
              0.046875 = fieldNorm(doc=2047)
      0.5 = coord(1/2)
  0.25 = coord(1/4)
    Abstract
    Recently, a detailed evaluation of a large, operational full-text document retrieval system was reported in the literature. Values of precision and recall were estimated usind traditional statistical sampling methods and blind evaluation procedures. The results of this evaluation demonstrated that the system tested was retrieving less then 20% of the relevant documents when the searchers believed it was retrieving over 75% of the relevant documents. This evaluation is described including some data not reported in the original article. Also discussed are the implications which this study has for how the subjects of documents should be represented, as well as the importance of rigorous retrieval evaluations for the furtherhance of information retrieval research

Authors

Years

Languages

Types

  • a 23
  • el 1
  • s 1
  • More… Less…

Themes