Search (22 results, page 1 of 2)

  • × theme_ss:"Automatisches Klassifizieren"
  • × year_i:[2000 TO 2010}
  1. Hotho, A.; Bloehdorn, S.: Data Mining 2004 : Text classification by boosting weak learners based on terms and concepts (2004) 0.13 
    0.1329582 = product of:
  0.221597 = sum of:
    0.053133007 = product of:
      0.15939902 = sum of:
        0.15939902 = weight(_text_:3a in 562) [ClassicSimilarity], result of:
          0.15939902 = score(doc=562,freq=2.0), product of:
            0.28361905 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.033453487 = 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)
    0.15939902 = weight(_text_:2f in 562) [ClassicSimilarity], result of:
      0.15939902 = score(doc=562,freq=2.0), product of:
        0.28361905 = queryWeight, product of:
          8.478011 = idf(docFreq=24, maxDocs=44218)
          0.033453487 = 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)
    0.0090649715 = product of:
      0.027194913 = sum of:
        0.027194913 = weight(_text_:22 in 562) [ClassicSimilarity], result of:
          0.027194913 = score(doc=562,freq=2.0), product of:
            0.117148414 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.033453487 = 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)
  0.6 = coord(3/5)
    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. Oberhauser, O.: Automatisches Klassifizieren : Entwicklungsstand - Methodik - Anwendungsbereiche (2005) 0.01 
    0.0075900652 = product of:
  0.037950326 = sum of:
    0.037950326 = weight(_text_:kritik in 38) [ClassicSimilarity], result of:
      0.037950326 = score(doc=38,freq=2.0), product of:
        0.2143907 = queryWeight, product of:
          6.4086204 = idf(docFreq=197, maxDocs=44218)
          0.033453487 = queryNorm
        0.1770148 = fieldWeight in 38, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          6.4086204 = idf(docFreq=197, maxDocs=44218)
          0.01953125 = fieldNorm(doc=38)
  0.2 = coord(1/5)
    Footnote
    Zum Inhalt Auf einen kurzen einleitenden Abschnitt folgt eine Einführung in die grundlegende Methodik des automatischen Klassifizierens. Oberhauser erklärt hier Begriffe wie Einfach- und Mehrfachklassifizierung, Klassen- und Dokumentzentrierung, und geht danach auf die hauptsächlichen Anwendungen der automatischen Klassifikation von Textdokumenten, maschinelle Lernverfahren und Techniken der Dimensionsreduktion bei der Indexierung ein. Zwei weitere Unterkapitel sind der Erstellung von Klassifikatoren und den Methoden für deren Auswertung gewidmet. Das Kapitel wird abgerundet von einer kurzen Auflistung einiger Softwareprodukte für automatisches Klassifizieren, die sowohl kommerzielle Software, als auch Projekte aus dem Open-Source-Bereich umfasst. Der Hauptteil des Buches ist den großen Projekten zur automatischen Erschließung von Webdokumenten gewidmet, die von OCLC (Scorpion) sowie an den Universitäten Lund (Nordic WAIS/WWW, DESIRE II), Wolverhampton (WWLib-TOS, WWLib-TNG, Old ACE, ACE) und Oldenburg (GERHARD, GERHARD II) durchgeführt worden sind. Der Autor beschreibt hier sehr detailliert - wobei der Detailliertheitsgrad unterschiedlich ist, je nachdem, was aus der Projektdokumentation geschlossen werden kann - die jeweilige Zielsetzung des Projektes, die verwendete Klassifikation, die methodische Vorgehensweise sowie die Evaluierungsmethoden und -ergebnisse. Sofern Querverweise zu anderen Projekten bestehen, werden auch diese besprochen. Der Verfasser geht hier sehr genau auf wichtige Aspekte wie Vokabularbildung, Textaufbereitung und Gewichtung ein, so dass der Leser eine gute Vorstellung von den Ansätzen und der möglichen Weiterentwicklung des Projektes bekommt. In einem weiteren Kapitel wird auf einige kleinere Projekte eingegangen, die dem für Bibliotheken besonders interessanten Thema des automatischen Klassifizierens von Büchern sowie den Bereichen Patentliteratur, Mediendokumentation und dem Einsatz bei Informationsdiensten gewidmet sind. Die Darstellung wird ergänzt von einem Literaturverzeichnis mit über 250 Titeln zu den konkreten Projekten sowie einem Abkürzungs- und einem Abbildungsverzeichnis. In der abschließenden Diskussion der beschriebenen Projekte wird einerseits auf die Bedeutung der einzelnen Projekte für den methodischen Fortschritt eingegangen, andererseits aber auch einiges an Kritik geäußert, v. a. bezüglich der mangelnden Auswertung der Projektergebnisse und des Fehlens an brauchbarer Dokumentation. So waren z. B. die Projektseiten des Projekts GERHARD (www.gerhard.de/) auf den Stand von 1998 eingefroren, zurzeit [11.07.06] sind sie überhaupt nicht mehr erreichbar. Mit einigem Erstaunen stellt Oberhauser auch fest, dass - abgesehen von der fast 15 Jahre alten Untersuchung von Larsen - »keine signifikanten Studien oder Anwendungen aus dem Bibliotheksbereich vorliegen« (S. 139). Wie der Autor aber selbst ergänzend ausführt, dürfte dies daran liegen, dass sich bibliografische Metadaten wegen des geringen Textumfangs sehr schlecht für automatische Klassifikation eignen, und dass - wie frühere Ergebnisse gezeigt haben - das übliche TF/IDF-Verfahren nicht für Katalogisate geeignet ist (ibd.).
  3. Subramanian, S.; Shafer, K.E.: Clustering (2001) 0.00 
    0.0036259887 = product of:
  0.018129943 = sum of:
    0.018129943 = product of:
      0.054389827 = sum of:
        0.054389827 = weight(_text_:22 in 1046) [ClassicSimilarity], result of:
          0.054389827 = score(doc=1046,freq=2.0), product of:
            0.117148414 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.033453487 = 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)
  0.2 = coord(1/5)
    Date
    5. 5.2003 14:17:22
  4. Reiner, U.: Automatische DDC-Klassifizierung von bibliografischen Titeldatensätzen (2009) 0.00 
    0.0030216572 = product of:
  0.015108286 = sum of:
    0.015108286 = product of:
      0.04532486 = sum of:
        0.04532486 = weight(_text_:22 in 611) [ClassicSimilarity], result of:
          0.04532486 = score(doc=611,freq=2.0), product of:
            0.117148414 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.033453487 = queryNorm
            0.38690117 = fieldWeight in 611, 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=611)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    22. 8.2009 12:54:24
  5. Ruiz, M.E.; Srinivasan, P.: Combining machine learning and hierarchical indexing structures for text categorization (2001) 0.00 
    0.0021343601 = product of:
  0.0106718 = sum of:
    0.0106718 = product of:
      0.0320154 = sum of:
        0.0320154 = weight(_text_:29 in 1595) [ClassicSimilarity], result of:
          0.0320154 = score(doc=1595,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = queryNorm
            0.27205724 = fieldWeight in 1595, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1595)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    11. 5.2003 18:29:44
  6. Automatic classification research at OCLC (2002) 0.00 
    0.00211516 = product of:
  0.0105758 = sum of:
    0.0105758 = product of:
      0.0317274 = sum of:
        0.0317274 = weight(_text_:22 in 1563) [ClassicSimilarity], result of:
          0.0317274 = score(doc=1563,freq=2.0), product of:
            0.117148414 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.033453487 = queryNorm
            0.2708308 = fieldWeight in 1563, 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=1563)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    5. 5.2003 9:22:09
  7. Yoon, Y.; Lee, C.; Lee, G.G.: ¬An effective procedure for constructing a hierarchical text classification system (2006) 0.00 
    0.00211516 = product of:
  0.0105758 = sum of:
    0.0105758 = product of:
      0.0317274 = sum of:
        0.0317274 = weight(_text_:22 in 5273) [ClassicSimilarity], result of:
          0.0317274 = score(doc=5273,freq=2.0), product of:
            0.117148414 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.033453487 = queryNorm
            0.2708308 = fieldWeight in 5273, 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=5273)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    22. 7.2006 16:24:52
  8. Yi, K.: Automatic text classification using library classification schemes : trends, issues and challenges (2007) 0.00 
    0.00211516 = product of:
  0.0105758 = sum of:
    0.0105758 = product of:
      0.0317274 = sum of:
        0.0317274 = weight(_text_:22 in 2560) [ClassicSimilarity], result of:
          0.0317274 = score(doc=2560,freq=2.0), product of:
            0.117148414 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.033453487 = queryNorm
            0.2708308 = fieldWeight in 2560, 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=2560)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    22. 9.2008 18:31:54
  9. Drori, O.; Alon, N.: Using document classification for displaying search results (2003) 0.00 
    0.0018294513 = product of:
  0.009147257 = sum of:
    0.009147257 = product of:
      0.02744177 = sum of:
        0.02744177 = weight(_text_:29 in 1565) [ClassicSimilarity], result of:
          0.02744177 = score(doc=1565,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = queryNorm
            0.23319192 = fieldWeight in 1565, 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=1565)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Source
    Journal of information science. 29(2003) no.2, S.97-106
  10. Chung, Y.-M.; Noh, Y.-H.: Developing a specialized directory system by automatically classifying Web documents (2003) 0.00 
    0.0018294513 = product of:
  0.009147257 = sum of:
    0.009147257 = product of:
      0.02744177 = sum of:
        0.02744177 = weight(_text_:29 in 1566) [ClassicSimilarity], result of:
          0.02744177 = score(doc=1566,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = 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)
  0.2 = coord(1/5)
    Source
    Journal of information science. 29(2003) no.2, S.117-126
  11. Li, T.; Zhu, S.; Ogihara, M.: Hierarchical document classification using automatically generated hierarchy (2007) 0.00 
    0.0018294513 = product of:
  0.009147257 = sum of:
    0.009147257 = product of:
      0.02744177 = sum of:
        0.02744177 = weight(_text_:29 in 4797) [ClassicSimilarity], result of:
          0.02744177 = score(doc=4797,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = queryNorm
            0.23319192 = fieldWeight in 4797, 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=4797)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Source
    Journal of intelligent information systems. 29(2007) no.2, S.211-230
  12. Liu, R.-L.: Context recognition for hierarchical text classification (2009) 0.00 
    0.0018129944 = product of:
  0.0090649715 = sum of:
    0.0090649715 = product of:
      0.027194913 = sum of:
        0.027194913 = weight(_text_:22 in 2760) [ClassicSimilarity], result of:
          0.027194913 = score(doc=2760,freq=2.0), product of:
            0.117148414 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.033453487 = queryNorm
            0.23214069 = fieldWeight in 2760, 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=2760)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    22. 3.2009 19:11:54
  13. Pfeffer, M.: Automatische Vergabe von RVK-Notationen mittels fallbasiertem Schließen (2009) 0.00 
    0.0018129944 = product of:
  0.0090649715 = sum of:
    0.0090649715 = product of:
      0.027194913 = sum of:
        0.027194913 = weight(_text_:22 in 3051) [ClassicSimilarity], result of:
          0.027194913 = score(doc=3051,freq=2.0), product of:
            0.117148414 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.033453487 = 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)
  0.2 = coord(1/5)
    Date
    22. 8.2009 19:51:28
  14. Ribeiro-Neto, B.; Laender, A.H.F.; Lima, L.R.S. de: ¬An experimental study in automatically categorizing medical documents (2001) 0.00 
    0.0015245428 = product of:
  0.007622714 = sum of:
    0.007622714 = product of:
      0.022868142 = sum of:
        0.022868142 = weight(_text_:29 in 5702) [ClassicSimilarity], result of:
          0.022868142 = score(doc=5702,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = queryNorm
            0.19432661 = fieldWeight in 5702, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5702)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    29. 9.2001 13:59:42
  15. Chung, Y.M.; Lee, J.Y.: ¬A corpus-based approach to comparative evaluation of statistical term association measures (2001) 0.00 
    0.0015245428 = product of:
  0.007622714 = sum of:
    0.007622714 = product of:
      0.022868142 = sum of:
        0.022868142 = weight(_text_:29 in 5769) [ClassicSimilarity], result of:
          0.022868142 = score(doc=5769,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = queryNorm
            0.19432661 = fieldWeight in 5769, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5769)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    29. 9.2001 14:01:18
  16. Ibekwe-SanJuan, F.; SanJuan, E.: From term variants to research topics (2002) 0.00 
    0.0015245428 = product of:
  0.007622714 = sum of:
    0.007622714 = product of:
      0.022868142 = sum of:
        0.022868142 = weight(_text_:29 in 1853) [ClassicSimilarity], result of:
          0.022868142 = score(doc=1853,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = queryNorm
            0.19432661 = fieldWeight in 1853, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1853)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Source
    Knowledge organization. 29(2002) nos.3/4, S.181-197
  17. Automatische Klassifikation und Extraktion in Documentum (2005) 0.00 
    0.0015245428 = product of:
  0.007622714 = sum of:
    0.007622714 = product of:
      0.022868142 = sum of:
        0.022868142 = weight(_text_:29 in 3974) [ClassicSimilarity], result of:
          0.022868142 = score(doc=3974,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = queryNorm
            0.19432661 = fieldWeight in 3974, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3974)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Footnote
    Kontakt: LCI GmbH, Freiburger Str. 16, 16,79199 Kirchzarten, Tel.: (0 76 61) 9 89 961o, Fax: (01212) 5 37 48 29 36, info@lci-software.com, www.lci-software.com
  18. Giorgetti, D.; Sebastiani, F.: Automating survey coding by multiclass text categorization techniques (2003) 0.00 
    0.0015245428 = product of:
  0.007622714 = sum of:
    0.007622714 = product of:
      0.022868142 = sum of:
        0.022868142 = weight(_text_:29 in 5172) [ClassicSimilarity], result of:
          0.022868142 = score(doc=5172,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = queryNorm
            0.19432661 = fieldWeight in 5172, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5172)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    9. 7.2006 10:29:12
  19. Kwon, O.W.; Lee, J.H.: Text categorization based on k-nearest neighbor approach for web site classification (2003) 0.00 
    0.0015245428 = product of:
  0.007622714 = sum of:
    0.007622714 = product of:
      0.022868142 = sum of:
        0.022868142 = weight(_text_:29 in 1070) [ClassicSimilarity], result of:
          0.022868142 = score(doc=1070,freq=2.0), product of:
            0.1176789 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.033453487 = queryNorm
            0.19432661 = fieldWeight in 1070, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1070)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    27.12.2007 17:32:29
  20. Mengle, S.; Goharian, N.: Passage detection using text classification (2009) 0.00 
    0.0015108286 = product of:
  0.007554143 = sum of:
    0.007554143 = product of:
      0.02266243 = sum of:
        0.02266243 = weight(_text_:22 in 2765) [ClassicSimilarity], result of:
          0.02266243 = score(doc=2765,freq=2.0), product of:
            0.117148414 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.033453487 = queryNorm
            0.19345059 = fieldWeight in 2765, 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=2765)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)
    Date
    22. 3.2009 19:14:43

Authors

Languages

  • e 17
  • d 5

Types

Themes