Search (19 results, page 1 of 1)

  • × theme_ss:"Automatisches Klassifizieren"
  1. Hotho, A.; Bloehdorn, S.: Data Mining 2004 : Text classification by boosting weak learners based on terms and concepts (2004) 0.10 
    0.10025631 = sum of:
  0.0798274 = product of:
    0.23948218 = sum of:
      0.23948218 = weight(_text_:3a in 562) [ClassicSimilarity], result of:
        0.23948218 = score(doc=562,freq=2.0), product of:
          0.4261112 = queryWeight, product of:
            8.478011 = idf(docFreq=24, maxDocs=44218)
            0.05026075 = 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)
  0.02042891 = product of:
    0.04085782 = sum of:
      0.04085782 = weight(_text_:22 in 562) [ClassicSimilarity], result of:
        0.04085782 = score(doc=562,freq=2.0), product of:
          0.17600457 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05026075 = 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)
    0.5 = coord(1/2)
    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. Reiner, U.: Automatische DDC-Klassifizierung bibliografischer Titeldatensätze der Deutschen Nationalbibliografie (2009) 0.06 
    0.055918865 = product of:
  0.11183773 = sum of:
    0.11183773 = sum of:
      0.08459918 = weight(_text_:plus in 3284) [ClassicSimilarity], result of:
        0.08459918 = score(doc=3284,freq=2.0), product of:
          0.3101809 = queryWeight, product of:
            6.1714344 = idf(docFreq=250, maxDocs=44218)
            0.05026075 = queryNorm
          0.27274144 = fieldWeight in 3284, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            6.1714344 = idf(docFreq=250, maxDocs=44218)
            0.03125 = fieldNorm(doc=3284)
      0.02723855 = weight(_text_:22 in 3284) [ClassicSimilarity], result of:
        0.02723855 = score(doc=3284,freq=2.0), product of:
          0.17600457 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05026075 = queryNorm
          0.15476047 = fieldWeight in 3284, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.03125 = fieldNorm(doc=3284)
  0.5 = coord(1/2)
    Abstract
    Die Menge der zu klassifizierenden Veröffentlichungen steigt spätestens seit der Existenz des World Wide Web schneller an, als sie intellektuell sachlich erschlossen werden kann. Daher werden Verfahren gesucht, um die Klassifizierung von Textobjekten zu automatisieren oder die intellektuelle Klassifizierung zumindest zu unterstützen. Seit 1968 gibt es Verfahren zur automatischen Dokumentenklassifizierung (Information Retrieval, kurz: IR) und seit 1992 zur automatischen Textklassifizierung (ATC: Automated Text Categorization). Seit immer mehr digitale Objekte im World Wide Web zur Verfügung stehen, haben Arbeiten zur automatischen Textklassifizierung seit ca. 1998 verstärkt zugenommen. Dazu gehören seit 1996 auch Arbeiten zur automatischen DDC-Klassifizierung bzw. RVK-Klassifizierung von bibliografischen Titeldatensätzen und Volltextdokumenten. Bei den Entwicklungen handelt es sich unseres Wissens bislang um experimentelle und keine im ständigen Betrieb befindlichen Systeme. Auch das VZG-Projekt Colibri/DDC ist seit 2006 u. a. mit der automatischen DDC-Klassifizierung befasst. Die diesbezüglichen Untersuchungen und Entwicklungen dienen zur Beantwortung der Forschungsfrage: "Ist es möglich, eine inhaltlich stimmige DDC-Titelklassifikation aller GVK-PLUS-Titeldatensätze automatisch zu erzielen?"
    Date
    22. 1.2010 14:41:24
  3. Pech, G.; Delgado, C.; Sorella, S.P.: Classifying papers into subfields using Abstracts, Titles, Keywords and KeyWords Plus through pattern detection and optimization procedures : an application in Physics (2022) 0.04 
    0.03738791 = product of:
  0.07477582 = sum of:
    0.07477582 = product of:
      0.14955164 = sum of:
        0.14955164 = weight(_text_:plus in 744) [ClassicSimilarity], result of:
          0.14955164 = score(doc=744,freq=4.0), product of:
            0.3101809 = queryWeight, product of:
              6.1714344 = idf(docFreq=250, maxDocs=44218)
              0.05026075 = queryNorm
            0.4821433 = fieldWeight in 744, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.1714344 = idf(docFreq=250, maxDocs=44218)
              0.0390625 = fieldNorm(doc=744)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Classifying papers according to the fields of knowledge is critical to clearly understand the dynamics of scientific (sub)fields, their leading questions, and trends. Most studies rely on journal categories defined by popular databases such as WoS or Scopus, but some experts find that those categories may not correctly map the existing subfields nor identify the subfield of a specific article. This study addresses the classification problem using data from each paper (Abstract, Title, Keywords, and the KeyWords Plus) and the help of experts to identify the existing subfields and journals exclusive of each subfield. These "exclusive journals" are critical to obtain, through a pattern detection procedure that uses machine learning techniques (from software NVivo), a list of the frequent terms that are specific to each subfield. With that list of terms and with the help of optimization procedures, we can identify to which subfield each paper most likely belongs. This study can contribute to support scientific policy-makers, funding, and research institutions-via more accurate academic performance evaluations-, to support editors in their tasks to redefine the scopes of journals, and to support popular databases in their processes of refining categories.
  4. Subramanian, S.; Shafer, K.E.: Clustering (2001) 0.02 
    0.02042891 = product of:
  0.04085782 = sum of:
    0.04085782 = product of:
      0.08171564 = sum of:
        0.08171564 = weight(_text_:22 in 1046) [ClassicSimilarity], result of:
          0.08171564 = score(doc=1046,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    5. 5.2003 14:17:22
  5. Reiner, U.: Automatische DDC-Klassifizierung von bibliografischen Titeldatensätzen (2009) 0.02 
    0.017024094 = product of:
  0.03404819 = sum of:
    0.03404819 = product of:
      0.06809638 = sum of:
        0.06809638 = weight(_text_:22 in 611) [ClassicSimilarity], result of:
          0.06809638 = score(doc=611,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 8.2009 12:54:24
  6. HaCohen-Kerner, Y. et al.: Classification using various machine learning methods and combinations of key-phrases and visual features (2016) 0.02 
    0.017024094 = product of:
  0.03404819 = sum of:
    0.03404819 = product of:
      0.06809638 = sum of:
        0.06809638 = weight(_text_:22 in 2748) [ClassicSimilarity], result of:
          0.06809638 = score(doc=2748,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.38690117 = fieldWeight in 2748, 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=2748)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    1. 2.2016 18:25:22
  7. Bock, H.-H.: Datenanalyse zur Strukturierung und Ordnung von Information (1989) 0.01 
    0.011916866 = product of:
  0.023833731 = sum of:
    0.023833731 = product of:
      0.047667462 = sum of:
        0.047667462 = weight(_text_:22 in 141) [ClassicSimilarity], result of:
          0.047667462 = score(doc=141,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.2708308 = fieldWeight in 141, 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=141)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Pages
    S.1-22
  8. Dubin, D.: Dimensions and discriminability (1998) 0.01 
    0.011916866 = product of:
  0.023833731 = sum of:
    0.023833731 = product of:
      0.047667462 = sum of:
        0.047667462 = weight(_text_:22 in 2338) [ClassicSimilarity], result of:
          0.047667462 = score(doc=2338,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.2708308 = fieldWeight in 2338, 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=2338)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 9.1997 19:16:05
  9. Automatic classification research at OCLC (2002) 0.01 
    0.011916866 = product of:
  0.023833731 = sum of:
    0.023833731 = product of:
      0.047667462 = sum of:
        0.047667462 = weight(_text_:22 in 1563) [ClassicSimilarity], result of:
          0.047667462 = score(doc=1563,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    5. 5.2003 9:22:09
  10. Jenkins, C.: Automatic classification of Web resources using Java and Dewey Decimal Classification (1998) 0.01 
    0.011916866 = product of:
  0.023833731 = sum of:
    0.023833731 = product of:
      0.047667462 = sum of:
        0.047667462 = weight(_text_:22 in 1673) [ClassicSimilarity], result of:
          0.047667462 = score(doc=1673,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.2708308 = fieldWeight in 1673, 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=1673)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    1. 8.1996 22:08:06
  11. Yoon, Y.; Lee, C.; Lee, G.G.: ¬An effective procedure for constructing a hierarchical text classification system (2006) 0.01 
    0.011916866 = product of:
  0.023833731 = sum of:
    0.023833731 = product of:
      0.047667462 = sum of:
        0.047667462 = weight(_text_:22 in 5273) [ClassicSimilarity], result of:
          0.047667462 = score(doc=5273,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 7.2006 16:24:52
  12. Yi, K.: Automatic text classification using library classification schemes : trends, issues and challenges (2007) 0.01 
    0.011916866 = product of:
  0.023833731 = sum of:
    0.023833731 = product of:
      0.047667462 = sum of:
        0.047667462 = weight(_text_:22 in 2560) [ClassicSimilarity], result of:
          0.047667462 = score(doc=2560,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 9.2008 18:31:54
  13. Liu, R.-L.: Context recognition for hierarchical text classification (2009) 0.01 
    0.010214455 = product of:
  0.02042891 = sum of:
    0.02042891 = product of:
      0.04085782 = sum of:
        0.04085782 = weight(_text_:22 in 2760) [ClassicSimilarity], result of:
          0.04085782 = score(doc=2760,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 3.2009 19:11:54
  14. Pfeffer, M.: Automatische Vergabe von RVK-Notationen mittels fallbasiertem Schließen (2009) 0.01 
    0.010214455 = product of:
  0.02042891 = sum of:
    0.02042891 = product of:
      0.04085782 = sum of:
        0.04085782 = weight(_text_:22 in 3051) [ClassicSimilarity], result of:
          0.04085782 = score(doc=3051,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 8.2009 19:51:28
  15. Zhu, W.Z.; Allen, R.B.: Document clustering using the LSI subspace signature model (2013) 0.01 
    0.010214455 = product of:
  0.02042891 = sum of:
    0.02042891 = product of:
      0.04085782 = sum of:
        0.04085782 = weight(_text_:22 in 690) [ClassicSimilarity], result of:
          0.04085782 = score(doc=690,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.23214069 = fieldWeight in 690, 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=690)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    23. 3.2013 13:22:36
  16. Egbert, J.; Biber, D.; Davies, M.: Developing a bottom-up, user-based method of web register classification (2015) 0.01 
    0.010214455 = product of:
  0.02042891 = sum of:
    0.02042891 = product of:
      0.04085782 = sum of:
        0.04085782 = weight(_text_:22 in 2158) [ClassicSimilarity], result of:
          0.04085782 = score(doc=2158,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    4. 8.2015 19:22:04
  17. Mengle, S.; Goharian, N.: Passage detection using text classification (2009) 0.01 
    0.008512047 = product of:
  0.017024094 = sum of:
    0.017024094 = product of:
      0.03404819 = sum of:
        0.03404819 = weight(_text_:22 in 2765) [ClassicSimilarity], result of:
          0.03404819 = score(doc=2765,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 3.2009 19:14:43
  18. Liu, R.-L.: ¬A passage extractor for classification of disease aspect information (2013) 0.01 
    0.008512047 = product of:
  0.017024094 = sum of:
    0.017024094 = product of:
      0.03404819 = sum of:
        0.03404819 = weight(_text_:22 in 1107) [ClassicSimilarity], result of:
          0.03404819 = score(doc=1107,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.19345059 = fieldWeight in 1107, 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=1107)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    28.10.2013 19:22:57
  19. Khoo, C.S.G.; Ng, K.; Ou, S.: ¬An exploratory study of human clustering of Web pages (2003) 0.01 
    0.0068096374 = product of:
  0.013619275 = sum of:
    0.013619275 = product of:
      0.02723855 = sum of:
        0.02723855 = weight(_text_:22 in 2741) [ClassicSimilarity], result of:
          0.02723855 = score(doc=2741,freq=2.0), product of:
            0.17600457 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05026075 = queryNorm
            0.15476047 = fieldWeight in 2741, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03125 = fieldNorm(doc=2741)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    12. 9.2004 9:56:22

Authors

Years

Languages

  • e 15
  • d 4

Types

Themes