Search (21 results, page 1 of 2)

  • × theme_ss:"Automatisches Klassifizieren"
  1. Hotho, A.; Bloehdorn, S.: Data Mining 2004 : Text classification by boosting weak learners based on terms and concepts (2004) 0.06 
    0.06333326 = product of:
  0.09499988 = sum of:
    0.07564205 = product of:
      0.22692613 = sum of:
        0.22692613 = weight(_text_:3a in 562) [ClassicSimilarity], result of:
          0.22692613 = score(doc=562,freq=2.0), product of:
            0.4037702 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.047625583 = 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)
    0.019357827 = product of:
      0.038715653 = sum of:
        0.038715653 = weight(_text_:22 in 562) [ClassicSimilarity], result of:
          0.038715653 = score(doc=562,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.6666667 = coord(2/3)
    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. AlQenaei, Z.M.; Monarchi, D.E.: ¬The use of learning techniques to analyze the results of a manual classification system (2016) 0.04 
    0.035037026 = product of:
  0.10511108 = sum of:
    0.10511108 = weight(_text_:objects in 2836) [ClassicSimilarity], result of:
      0.10511108 = score(doc=2836,freq=4.0), product of:
        0.25313336 = queryWeight, product of:
          5.315071 = idf(docFreq=590, maxDocs=44218)
          0.047625583 = queryNorm
        0.41523993 = fieldWeight in 2836, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          5.315071 = idf(docFreq=590, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2836)
  0.33333334 = coord(1/3)
    Abstract
    Classification is the process of assigning objects to pre-defined classes based on observations or characteristics of those objects, and there are many approaches to performing this task. The overall objective of this study is to demonstrate the use of two learning techniques to analyze the results of a manual classification system. Our sample consisted of 1,026 documents, from the ACM Computing Classification System, classified by their authors as belonging to one of the groups of the classification system: "H.3 Information Storage and Retrieval." A singular value decomposition of the documents' weighted term-frequency matrix was used to represent each document in a 50-dimensional vector space. The analysis of the representation using both supervised (decision tree) and unsupervised (clustering) techniques suggests that two pairs of the ACM classes are closely related to each other in the vector space. Class 1 (Content Analysis and Indexing) is closely related to Class 3 (Information Search and Retrieval), and Class 4 (Systems and Software) is closely related to Class 5 (Online Information Services). Further analysis was performed to test the diffusion of the words in the two classes using both cosine and Euclidean distance.
  3. Liu, X.; Yu, S.; Janssens, F.; Glänzel, W.; Moreau, Y.; Moor, B.de: Weighted hybrid clustering by combining text mining and bibliometrics on a large-scale journal database (2010) 0.03 
    0.028864427 = product of:
  0.08659328 = sum of:
    0.08659328 = product of:
      0.17318656 = sum of:
        0.17318656 = weight(_text_:fusion in 3464) [ClassicSimilarity], result of:
          0.17318656 = score(doc=3464,freq=2.0), product of:
            0.35273543 = queryWeight, product of:
              7.406428 = idf(docFreq=72, maxDocs=44218)
              0.047625583 = queryNorm
            0.49098146 = fieldWeight in 3464, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              7.406428 = idf(docFreq=72, maxDocs=44218)
              0.046875 = fieldNorm(doc=3464)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    We propose a new hybrid clustering framework to incorporate text mining with bibliometrics in journal set analysis. The framework integrates two different approaches: clustering ensemble and kernel-fusion clustering. To improve the flexibility and the efficiency of processing large-scale data, we propose an information-based weighting scheme to leverage the effect of multiple data sources in hybrid clustering. Three different algorithms are extended by the proposed weighting scheme and they are employed on a large journal set retrieved from the Web of Science (WoS) database. The clustering performance of the proposed algorithms is systematically evaluated using multiple evaluation methods, and they were cross-compared with alternative methods. Experimental results demonstrate that the proposed weighted hybrid clustering strategy is superior to other methods in clustering performance and efficiency. The proposed approach also provides a more refined structural mapping of journal sets, which is useful for monitoring and detecting new trends in different scientific fields.
  4. Mu, T.; Goulermas, J.Y.; Korkontzelos, I.; Ananiadou, S.: Descriptive document clustering via discriminant learning in a co-embedded space of multilevel similarities (2016) 0.02 
    0.02477492 = product of:
  0.07432476 = sum of:
    0.07432476 = weight(_text_:objects in 2496) [ClassicSimilarity], result of:
      0.07432476 = score(doc=2496,freq=2.0), product of:
        0.25313336 = queryWeight, product of:
          5.315071 = idf(docFreq=590, maxDocs=44218)
          0.047625583 = queryNorm
        0.29361898 = fieldWeight in 2496, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.315071 = idf(docFreq=590, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2496)
  0.33333334 = coord(1/3)
    Abstract
    Descriptive document clustering aims at discovering clusters of semantically interrelated documents together with meaningful labels to summarize the content of each document cluster. In this work, we propose a novel descriptive clustering framework, referred to as CEDL. It relies on the formulation and generation of 2 types of heterogeneous objects, which correspond to documents and candidate phrases, using multilevel similarity information. CEDL is composed of 5 main processing stages. First, it simultaneously maps the documents and candidate phrases into a common co-embedded space that preserves higher-order, neighbor-based proximities between the combined sets of documents and phrases. Then, it discovers an approximate cluster structure of documents in the common space. The third stage extracts promising topic phrases by constructing a discriminant model where documents along with their cluster memberships are used as training instances. Subsequently, the final cluster labels are selected from the topic phrases using a ranking scheme using multiple scores based on the extracted co-embedding information and the discriminant output. The final stage polishes the initial clusters to reduce noise and accommodate the multitopic nature of documents. The effectiveness and competitiveness of CEDL is demonstrated qualitatively and quantitatively with experiments using document databases from different application fields.
  5. Subramanian, S.; Shafer, K.E.: Clustering (2001) 0.01 
    0.012905218 = product of:
  0.038715653 = sum of:
    0.038715653 = product of:
      0.077431306 = sum of:
        0.077431306 = weight(_text_:22 in 1046) [ClassicSimilarity], result of:
          0.077431306 = score(doc=1046,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    5. 5.2003 14:17:22
  6. Reiner, U.: Automatische DDC-Klassifizierung von bibliografischen Titeldatensätzen (2009) 0.01 
    0.010754349 = product of:
  0.032263044 = sum of:
    0.032263044 = product of:
      0.06452609 = sum of:
        0.06452609 = weight(_text_:22 in 611) [ClassicSimilarity], result of:
          0.06452609 = score(doc=611,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    22. 8.2009 12:54:24
  7. HaCohen-Kerner, Y. et al.: Classification using various machine learning methods and combinations of key-phrases and visual features (2016) 0.01 
    0.010754349 = product of:
  0.032263044 = sum of:
    0.032263044 = product of:
      0.06452609 = sum of:
        0.06452609 = weight(_text_:22 in 2748) [ClassicSimilarity], result of:
          0.06452609 = score(doc=2748,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    1. 2.2016 18:25:22
  8. Bock, H.-H.: Datenanalyse zur Strukturierung und Ordnung von Information (1989) 0.01 
    0.007528044 = product of:
  0.022584131 = sum of:
    0.022584131 = product of:
      0.045168262 = sum of:
        0.045168262 = weight(_text_:22 in 141) [ClassicSimilarity], result of:
          0.045168262 = score(doc=141,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Pages
    S.1-22
  9. Dubin, D.: Dimensions and discriminability (1998) 0.01 
    0.007528044 = product of:
  0.022584131 = sum of:
    0.022584131 = product of:
      0.045168262 = sum of:
        0.045168262 = weight(_text_:22 in 2338) [ClassicSimilarity], result of:
          0.045168262 = score(doc=2338,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    22. 9.1997 19:16:05
  10. Automatic classification research at OCLC (2002) 0.01 
    0.007528044 = product of:
  0.022584131 = sum of:
    0.022584131 = product of:
      0.045168262 = sum of:
        0.045168262 = weight(_text_:22 in 1563) [ClassicSimilarity], result of:
          0.045168262 = score(doc=1563,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    5. 5.2003 9:22:09
  11. Jenkins, C.: Automatic classification of Web resources using Java and Dewey Decimal Classification (1998) 0.01 
    0.007528044 = product of:
  0.022584131 = sum of:
    0.022584131 = product of:
      0.045168262 = sum of:
        0.045168262 = weight(_text_:22 in 1673) [ClassicSimilarity], result of:
          0.045168262 = score(doc=1673,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    1. 8.1996 22:08:06
  12. Yoon, Y.; Lee, C.; Lee, G.G.: ¬An effective procedure for constructing a hierarchical text classification system (2006) 0.01 
    0.007528044 = product of:
  0.022584131 = sum of:
    0.022584131 = product of:
      0.045168262 = sum of:
        0.045168262 = weight(_text_:22 in 5273) [ClassicSimilarity], result of:
          0.045168262 = score(doc=5273,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    22. 7.2006 16:24:52
  13. Yi, K.: Automatic text classification using library classification schemes : trends, issues and challenges (2007) 0.01 
    0.007528044 = product of:
  0.022584131 = sum of:
    0.022584131 = product of:
      0.045168262 = sum of:
        0.045168262 = weight(_text_:22 in 2560) [ClassicSimilarity], result of:
          0.045168262 = score(doc=2560,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    22. 9.2008 18:31:54
  14. Liu, R.-L.: Context recognition for hierarchical text classification (2009) 0.01 
    0.006452609 = product of:
  0.019357827 = sum of:
    0.019357827 = product of:
      0.038715653 = sum of:
        0.038715653 = weight(_text_:22 in 2760) [ClassicSimilarity], result of:
          0.038715653 = score(doc=2760,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    22. 3.2009 19:11:54
  15. Pfeffer, M.: Automatische Vergabe von RVK-Notationen mittels fallbasiertem Schließen (2009) 0.01 
    0.006452609 = product of:
  0.019357827 = sum of:
    0.019357827 = product of:
      0.038715653 = sum of:
        0.038715653 = weight(_text_:22 in 3051) [ClassicSimilarity], result of:
          0.038715653 = score(doc=3051,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    22. 8.2009 19:51:28
  16. Zhu, W.Z.; Allen, R.B.: Document clustering using the LSI subspace signature model (2013) 0.01 
    0.006452609 = product of:
  0.019357827 = sum of:
    0.019357827 = product of:
      0.038715653 = sum of:
        0.038715653 = weight(_text_:22 in 690) [ClassicSimilarity], result of:
          0.038715653 = score(doc=690,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    23. 3.2013 13:22:36
  17. Egbert, J.; Biber, D.; Davies, M.: Developing a bottom-up, user-based method of web register classification (2015) 0.01 
    0.006452609 = product of:
  0.019357827 = sum of:
    0.019357827 = product of:
      0.038715653 = sum of:
        0.038715653 = weight(_text_:22 in 2158) [ClassicSimilarity], result of:
          0.038715653 = score(doc=2158,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    4. 8.2015 19:22:04
  18. Mengle, S.; Goharian, N.: Passage detection using text classification (2009) 0.01 
    0.0053771744 = product of:
  0.016131522 = sum of:
    0.016131522 = product of:
      0.032263044 = sum of:
        0.032263044 = weight(_text_:22 in 2765) [ClassicSimilarity], result of:
          0.032263044 = score(doc=2765,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    22. 3.2009 19:14:43
  19. Liu, R.-L.: ¬A passage extractor for classification of disease aspect information (2013) 0.01 
    0.0053771744 = product of:
  0.016131522 = sum of:
    0.016131522 = product of:
      0.032263044 = sum of:
        0.032263044 = weight(_text_:22 in 1107) [ClassicSimilarity], result of:
          0.032263044 = score(doc=1107,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    28.10.2013 19:22:57
  20. Khoo, C.S.G.; Ng, K.; Ou, S.: ¬An exploratory study of human clustering of Web pages (2003) 0.00 
    0.0043017394 = product of:
  0.012905218 = sum of:
    0.012905218 = product of:
      0.025810435 = sum of:
        0.025810435 = weight(_text_:22 in 2741) [ClassicSimilarity], result of:
          0.025810435 = score(doc=2741,freq=2.0), product of:
            0.16677667 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047625583 = 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)
  0.33333334 = coord(1/3)
    Date
    12. 9.2004 9:56:22

Authors

Years

Languages

  • e 17
  • d 4

Types

Themes