Search (57 results, page 1 of 3)

  • × theme_ss:"Automatisches Klassifizieren"
  • × type_ss:"a"
  1. Hotho, A.; Bloehdorn, S.: Data Mining 2004 : Text classification by boosting weak learners based on terms and concepts (2004) 0.29 
    0.29195872 = product of:
  0.43793806 = sum of:
    0.06107404 = product of:
      0.18322212 = sum of:
        0.18322212 = weight(_text_:3a in 562) [ClassicSimilarity], result of:
          0.18322212 = score(doc=562,freq=2.0), product of:
            0.32600754 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.038453303 = queryNorm
            0.56201804 = fieldWeight in 562, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.046875 = fieldNorm(doc=562)
      0.33333334 = coord(1/3)
    0.18322212 = weight(_text_:2f in 562) [ClassicSimilarity], result of:
      0.18322212 = score(doc=562,freq=2.0), product of:
        0.32600754 = queryWeight, product of:
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.038453303 = queryNorm
        0.56201804 = fieldWeight in 562, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.046875 = fieldNorm(doc=562)
    0.18322212 = weight(_text_:2f in 562) [ClassicSimilarity], result of:
      0.18322212 = score(doc=562,freq=2.0), product of:
        0.32600754 = queryWeight, product of:
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.038453303 = queryNorm
        0.56201804 = fieldWeight in 562, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.046875 = fieldNorm(doc=562)
    0.010419784 = product of:
      0.03125935 = sum of:
        0.03125935 = weight(_text_:22 in 562) [ClassicSimilarity], result of:
          0.03125935 = score(doc=562,freq=2.0), product of:
            0.13465692 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038453303 = queryNorm
            0.23214069 = fieldWeight in 562, 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=562)
      0.33333334 = coord(1/3)
  0.6666667 = coord(4/6)
    Content
    Vgl.: http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CEAQFjAA&url=http%3A%2F%2Fciteseerx.ist.psu.edu%2Fviewdoc%2Fdownload%3Fdoi%3D10.1.1.91.4940%26rep%3Drep1%26type%3Dpdf&ei=dOXrUMeIDYHDtQahsIGACg&usg=AFQjCNHFWVh6gNPvnOrOS9R3rkrXCNVD-A&sig2=5I2F5evRfMnsttSgFF9g7Q&bvm=bv.1357316858,d.Yms.
    Date
    8. 1.2013 10:22:32
  2. Wätjen, H.-J.: GERHARD : Automatisches Sammeln, Klassifizieren und Indexieren von wissenschaftlich relevanten Informationsressourcen im deutschen World Wide Web (1998) 0.03 
    0.028928082 = product of:
  0.08678424 = sum of:
    0.05012741 = weight(_text_:bibliothek in 3064) [ClassicSimilarity], result of:
      0.05012741 = score(doc=3064,freq=2.0), product of:
        0.1578712 = queryWeight, product of:
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.038453303 = queryNorm
        0.31752092 = fieldWeight in 3064, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3064)
    0.036656834 = weight(_text_:internet in 3064) [ClassicSimilarity], result of:
      0.036656834 = score(doc=3064,freq=4.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.32290122 = fieldWeight in 3064, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3064)
  0.33333334 = coord(2/6)
    Abstract
    Die intellektuelle Erschließung des Internet befindet sich in einer Krise. Yahoo und andere Dienste können mit dem Wachstum des Web nicht mithalten. GERHARD ist derzeit weltweit der einzige Such- und Navigationsdienst, der die mit einem Roboter gesammelten Internetressourcen mit computerlinguistischen und statistischen Verfahren auch automatisch vollständig klassifiziert. Weit über eine Million HTML-Dokumente von wissenschaftlich relevanten Servern in Deutschland können wie bei anderen Suchmaschinen in der Datenbank gesucht, aber auch über die Navigation in der dreisprachigen Universalen Dezimalklassifikation (ETH-Bibliothek Zürich) recherchiert werden
    Theme
    Internet
  3. Subramanian, S.; Shafer, K.E.: Clustering (2001) 0.02 
    0.02175812 = product of:
  0.06527436 = sum of:
    0.044434793 = weight(_text_:internet in 1046) [ClassicSimilarity], result of:
      0.044434793 = score(doc=1046,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.3914154 = fieldWeight in 1046, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.09375 = fieldNorm(doc=1046)
    0.020839568 = product of:
      0.0625187 = sum of:
        0.0625187 = weight(_text_:22 in 1046) [ClassicSimilarity], result of:
          0.0625187 = score(doc=1046,freq=2.0), product of:
            0.13465692 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038453303 = queryNorm
            0.46428138 = fieldWeight in 1046, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=1046)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Date
    5. 5.2003 14:17:22
    Footnote
    Teil eines Themenheftes: OCLC and the Internet: An Historical Overview of Research Activities, 1990-1999 - Part II
  4. Pfeffer, M.: Automatische Vergabe von RVK-Notationen mittels fallbasiertem Schließen (2009) 0.02 
    0.017795376 = product of:
  0.05338613 = sum of:
    0.042966347 = weight(_text_:bibliothek in 3051) [ClassicSimilarity], result of:
      0.042966347 = score(doc=3051,freq=2.0), product of:
        0.1578712 = queryWeight, product of:
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.038453303 = queryNorm
        0.27216077 = fieldWeight in 3051, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.046875 = fieldNorm(doc=3051)
    0.010419784 = product of:
      0.03125935 = sum of:
        0.03125935 = weight(_text_:22 in 3051) [ClassicSimilarity], result of:
          0.03125935 = score(doc=3051,freq=2.0), product of:
            0.13465692 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038453303 = queryNorm
            0.23214069 = fieldWeight in 3051, 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=3051)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Abstract
    Klassifikation von bibliografischen Einheiten ist für einen systematischen Zugang zu den Beständen einer Bibliothek und deren Aufstellung unumgänglich. Bislang wurde diese Aufgabe von Fachexperten manuell erledigt, sei es individuell nach einer selbst entwickelten Systematik oder kooperativ nach einer gemeinsamen Systematik. In dieser Arbeit wird ein Verfahren zur Automatisierung des Klassifikationsvorgangs vorgestellt. Dabei kommt das Verfahren des fallbasierten Schließens zum Einsatz, das im Kontext der Forschung zur künstlichen Intelligenz entwickelt wurde. Das Verfahren liefert für jedes Werk, für das bibliografische Daten vorliegen, eine oder mehrere mögliche Klassifikationen. In Experimenten werden die Ergebnisse der automatischen Klassifikation mit der durch Fachexperten verglichen. Diese Experimente belegen die hohe Qualität der automatischen Klassifikation und dass das Verfahren geeignet ist, Fachexperten bei der Klassifikationsarbeit signifikant zu entlasten. Auch die nahezu vollständige Resystematisierung eines Bibliothekskataloges ist - mit gewissen Abstrichen - möglich.
    Date
    22. 8.2009 19:51:28
  5. Egbert, J.; Biber, D.; Davies, M.: Developing a bottom-up, user-based method of web register classification (2015) 0.01 
    0.013946643 = product of:
  0.041839927 = sum of:
    0.031420145 = weight(_text_:internet in 2158) [ClassicSimilarity], result of:
      0.031420145 = score(doc=2158,freq=4.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.27677247 = fieldWeight in 2158, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.046875 = fieldNorm(doc=2158)
    0.010419784 = product of:
      0.03125935 = sum of:
        0.03125935 = weight(_text_:22 in 2158) [ClassicSimilarity], result of:
          0.03125935 = score(doc=2158,freq=2.0), product of:
            0.13465692 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.038453303 = queryNorm
            0.23214069 = fieldWeight in 2158, 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=2158)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Abstract
    This paper introduces a project to develop a reliable, cost-effective method for classifying Internet texts into register categories, and apply that approach to the analysis of a large corpus of web documents. To date, the project has proceeded in 2 key phases. First, we developed a bottom-up method for web register classification, asking end users of the web to utilize a decision-tree survey to code relevant situational characteristics of web documents, resulting in a bottom-up identification of register and subregister categories. We present details regarding the development and testing of this method through a series of 10 pilot studies. Then, in the second phase of our project we applied this procedure to a corpus of 53,000 web documents. An analysis of the results demonstrates the effectiveness of these methods for web register classification and provides a preliminary description of the types and distribution of registers on the web.
    Date
    4. 8.2015 19:22:04
    Theme
    Internet
  6. Chung, Y.-M.; Noh, Y.-H.: Developing a specialized directory system by automatically classifying Web documents (2003) 0.01 
    0.010910588 = product of:
  0.032731764 = sum of:
    0.022217397 = weight(_text_:internet in 1566) [ClassicSimilarity], result of:
      0.022217397 = score(doc=1566,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.1957077 = fieldWeight in 1566, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.046875 = fieldNorm(doc=1566)
    0.010514366 = product of:
      0.0315431 = sum of:
        0.0315431 = weight(_text_:29 in 1566) [ClassicSimilarity], result of:
          0.0315431 = score(doc=1566,freq=2.0), product of:
            0.13526669 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.038453303 = queryNorm
            0.23319192 = fieldWeight in 1566, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.046875 = fieldNorm(doc=1566)
      0.33333334 = coord(1/3)
  0.33333334 = coord(2/6)
    Source
    Journal of information science. 29(2003) no.2, S.117-126
    Theme
    Internet
  7. Shafer, K.E.: Evaluating Scorpion Results (2001) 0.01 
    0.010689351 = product of:
  0.0641361 = sum of:
    0.0641361 = weight(_text_:internet in 4085) [ClassicSimilarity], result of:
      0.0641361 = score(doc=4085,freq=6.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.56495947 = fieldWeight in 4085, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.078125 = fieldNorm(doc=4085)
  0.16666667 = coord(1/6)
    Abstract
    Using DDC for automatic indexing and classifying of Internet resources
    Footnote
    Teil eines Themenheftes: OCLC and the Internet: An Historical Overview of Research Activities, 1990-1999 - Part II
    Theme
    Internet
  8. Shafer, K.E.: Automatic Subject Assignment via the Scorpion System (2001) 0.01 
    0.010473382 = product of:
  0.06284029 = sum of:
    0.06284029 = weight(_text_:internet in 1043) [ClassicSimilarity], result of:
      0.06284029 = score(doc=1043,freq=4.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.55354494 = fieldWeight in 1043, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.09375 = fieldNorm(doc=1043)
  0.16666667 = coord(1/6)
    Footnote
    Teil eines Themenheftes: OCLC and the Internet: An Historical Overview of Research Activities, 1990-1999 - Part I
    Theme
    Internet
  9. Kasprzik, A.: Automatisierte und semiautomatisierte Klassifizierung : eine Analyse aktueller Projekte (2014) 0.01 
    0.010127267 = product of:
  0.060763597 = sum of:
    0.060763597 = weight(_text_:bibliothek in 2470) [ClassicSimilarity], result of:
      0.060763597 = score(doc=2470,freq=4.0), product of:
        0.1578712 = queryWeight, product of:
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.038453303 = queryNorm
        0.38489348 = fieldWeight in 2470, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.046875 = fieldNorm(doc=2470)
  0.16666667 = coord(1/6)
    Content
    Vgl.: https://journals.ub.uni-heidelberg.de/index.php/bibliothek/article/view/14022.
    Source
    Perspektive Bibliothek. 3(2014) H.1, S.85-110
  10. Vizine-Goetz, D.: NetLab / OCLC collaboration seeks to improve Web searching (1999) 0.01 
    0.008727819 = product of:
  0.05236691 = sum of:
    0.05236691 = weight(_text_:internet in 4180) [ClassicSimilarity], result of:
      0.05236691 = score(doc=4180,freq=4.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.46128747 = fieldWeight in 4180, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.078125 = fieldNorm(doc=4180)
  0.16666667 = coord(1/6)
    Abstract
    Vorstellung verschiedener Projekte zur Verbesserung der Internet-Erschließung mit Hilfe der DDC
    Theme
    Internet
  11. Oberhauser, O.: Automatisches Klassifizieren und Bibliothekskataloge (2005) 0.01 
    0.008354569 = product of:
  0.05012741 = sum of:
    0.05012741 = weight(_text_:bibliothek in 4099) [ClassicSimilarity], result of:
      0.05012741 = score(doc=4099,freq=2.0), product of:
        0.1578712 = queryWeight, product of:
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.038453303 = queryNorm
        0.31752092 = fieldWeight in 4099, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4099)
  0.16666667 = coord(1/6)
    Source
    Bibliothek Technik Recht. Festschrift für Peter Kubalek zum 60. Geburtstag. Hrsg.: H. Hrusa
  12. GERHARD : eine Spezialsuchmaschine für die Wissenschaft (1998) 0.01 
    0.007405799 = product of:
  0.044434793 = sum of:
    0.044434793 = weight(_text_:internet in 381) [ClassicSimilarity], result of:
      0.044434793 = score(doc=381,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.3914154 = fieldWeight in 381, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.09375 = fieldNorm(doc=381)
  0.16666667 = coord(1/6)
    Theme
    Internet
  13. Ardö, A.; Koch, T.: Automatic classification applied to full-text Internet documents in a robot-generated subject index (1999) 0.01 
    0.007405799 = product of:
  0.044434793 = sum of:
    0.044434793 = weight(_text_:internet in 382) [ClassicSimilarity], result of:
      0.044434793 = score(doc=382,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.3914154 = fieldWeight in 382, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.09375 = fieldNorm(doc=382)
  0.16666667 = coord(1/6)
  14. Chan, L.M.; Lin, X.; Zeng, M.L.: Structural and multilingual approaches to subject access on the Web (2000) 0.01 
    0.007405799 = product of:
  0.044434793 = sum of:
    0.044434793 = weight(_text_:internet in 507) [ClassicSimilarity], result of:
      0.044434793 = score(doc=507,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.3914154 = fieldWeight in 507, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.09375 = fieldNorm(doc=507)
  0.16666667 = coord(1/6)
    Theme
    Internet
  15. McKiernan, G.: Automated categorisation of Web resources : a profile of selected projects, research, products, and services (1996) 0.01 
    0.0061715 = product of:
  0.037028998 = sum of:
    0.037028998 = weight(_text_:internet in 2533) [ClassicSimilarity], result of:
      0.037028998 = score(doc=2533,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.3261795 = fieldWeight in 2533, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.078125 = fieldNorm(doc=2533)
  0.16666667 = coord(1/6)
    Theme
    Internet
  16. Möller, G.: Automatic classification of the World Wide Web using Universal Decimal Classification (1999) 0.01 
    0.0061715 = product of:
  0.037028998 = sum of:
    0.037028998 = weight(_text_:internet in 494) [ClassicSimilarity], result of:
      0.037028998 = score(doc=494,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.3261795 = fieldWeight in 494, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.078125 = fieldNorm(doc=494)
  0.16666667 = coord(1/6)
    Theme
    Internet
  17. Koch, T.: Experiments with automatic classification of WAIS databases and indexing of WWW : some results from the Nordic WAIS/WWW project (1994) 0.01 
    0.0061094724 = product of:
  0.036656834 = sum of:
    0.036656834 = weight(_text_:internet in 7209) [ClassicSimilarity], result of:
      0.036656834 = score(doc=7209,freq=4.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.32290122 = fieldWeight in 7209, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0546875 = fieldNorm(doc=7209)
  0.16666667 = coord(1/6)
    Source
    Internet world and document delivery world international 94: Proceedings of the 2nd Annual Conference, London, May 1994
    Theme
    Internet
  18. Choi, B.; Peng, X.: Dynamic and hierarchical classification of Web pages (2004) 0.01 
    0.005236691 = product of:
  0.031420145 = sum of:
    0.031420145 = weight(_text_:internet in 2555) [ClassicSimilarity], result of:
      0.031420145 = score(doc=2555,freq=4.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.27677247 = fieldWeight in 2555, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.046875 = fieldNorm(doc=2555)
  0.16666667 = coord(1/6)
    Abstract
    Automatic classification of Web pages is an effective way to organise the vast amount of information and to assist in retrieving relevant information from the Internet. Although many automatic classification systems have been proposed, most of them ignore the conflict between the fixed number of categories and the growing number of Web pages being added into the systems. They also require searching through all existing categories to make any classification. This article proposes a dynamic and hierarchical classification system that is capable of adding new categories as required, organising the Web pages into a tree structure, and classifying Web pages by searching through only one path of the tree. The proposed single-path search technique reduces the search complexity from (n) to (log(n)). Test results show that the system improves the accuracy of classification by 6 percent in comparison to related systems. The dynamic-category expansion technique also achieves satisfying results for adding new categories into the system as required.
    Theme
    Internet
  19. Koch, T.: Nutzung von Klassifikationssystemen zur verbesserten Beschreibung, Organisation und Suche von Internetressourcen (1998) 0.00 
    0.0049371994 = product of:
  0.029623196 = sum of:
    0.029623196 = weight(_text_:internet in 1030) [ClassicSimilarity], result of:
      0.029623196 = score(doc=1030,freq=2.0), product of:
        0.11352337 = queryWeight, product of:
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.038453303 = queryNorm
        0.2609436 = fieldWeight in 1030, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.9522398 = idf(docFreq=6276, maxDocs=44218)
          0.0625 = fieldNorm(doc=1030)
  0.16666667 = coord(1/6)
    Theme
    Internet
  20. Groß, T.; Faden, M.: Automatische Indexierung elektronischer Dokumente an der Deutschen Zentralbibliothek für Wirtschaftswissenschaften : Bericht über die Jahrestagung der Internationalen Buchwissenschaftlichen Gesellschaft (2010) 0.00 
    0.0047740387 = product of:
  0.028644232 = sum of:
    0.028644232 = weight(_text_:bibliothek in 4051) [ClassicSimilarity], result of:
      0.028644232 = score(doc=4051,freq=2.0), product of:
        0.1578712 = queryWeight, product of:
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.038453303 = queryNorm
        0.18144052 = fieldWeight in 4051, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.1055303 = idf(docFreq=1980, maxDocs=44218)
          0.03125 = fieldNorm(doc=4051)
  0.16666667 = coord(1/6)
    Abstract
    Die zunehmende Verfügbarmachung digitaler Informationen in den letzten Jahren sowie die Aussicht auf ein weiteres Ansteigen der sogenannten Datenflut kumulieren in einem grundlegenden, sich weiter verstärkenden Informationsstrukturierungsproblem. Die stetige Zunahme von digitalen Informationsressourcen im World Wide Web sichert zwar jederzeit und ortsungebunden den Zugriff auf verschiedene Informationen; offen bleibt der strukturierte Zugang, insbesondere zu wissenschaftlichen Ressourcen. Angesichts der steigenden Anzahl elektronischer Inhalte und vor dem Hintergrund stagnierender bzw. knapper werdender personeller Ressourcen in der Sacherschließun schafft keine Bibliothek bzw. kein Bibliotheksverbund es mehr, weder aktuell noch zukünftig, alle digitalen Daten zu erfassen, zu strukturieren und zueinander in Beziehung zu setzen. In der Informationsgesellschaft des 21. Jahrhunderts wird es aber zunehmend wichtiger, die in der Flut verschwundenen wissenschaftlichen Informationen zeitnah, angemessen und vollständig zu strukturieren und somit als Basis für eine Wissensgenerierung wieder nutzbar zu machen. Eine normierte Inhaltserschließung digitaler Informationsressourcen ist deshalb für die Deutsche Zentralbibliothek für Wirtschaftswissenschaften (ZBW) als wichtige Informationsinfrastruktureinrichtung in diesem Bereich ein entscheidender und auch erfolgskritischer Aspekt im Wettbewerb mit anderen Informationsdienstleistern. Weil die traditionelle intellektuelle Sacherschließung aber nicht beliebig skalierbar ist - mit dem Anstieg der Zahl an Online-Dokumenten steigt proportional auch der personelle Ressourcenbedarf an Fachreferenten, wenn ein gewisser Qualitätsstandard gehalten werden soll - bedarf es zukünftig anderer Sacherschließungsverfahren. Automatisierte Verschlagwortungsmethoden werden dabei als einzige Möglichkeit angesehen, die bibliothekarische Sacherschließung auch im digitalen Zeitalter zukunftsfest auszugestalten. Zudem können maschinelle Ansätze dazu beitragen, die Heterogenitäten (Indexierungsinkonsistenzen) zwischen den einzelnen Sacherschließer zu nivellieren, und somit zu einer homogeneren Erschließung des Bibliotheksbestandes beitragen.

Authors

Years

Languages

  • e 44
  • d 13

Themes