Search (4 results, page 1 of 1)

  • × author_ss:"Landauer, T.K."
  1. Gomez, L.; Lochbaum, C.C.; Landauer, T.K.: All the right words: finding what you want as an function of richness of indexing vocabulary (1990) 0.01 
    0.006865305 = product of:
  0.04805713 = sum of:
    0.012107591 = weight(_text_:information in 154) [ClassicSimilarity], result of:
      0.012107591 = score(doc=154,freq=2.0), product of:
        0.052020688 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.029633347 = queryNorm
        0.23274569 = fieldWeight in 154, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=154)
    0.03594954 = weight(_text_:retrieval in 154) [ClassicSimilarity], result of:
      0.03594954 = score(doc=154,freq=2.0), product of:
        0.08963835 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.029633347 = queryNorm
        0.40105087 = fieldWeight in 154, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.09375 = fieldNorm(doc=154)
  0.14285715 = coord(2/14)
    Source
    Journal of the American Society for information Science. 41(1990) no.8, S.547-559
    Theme
    Verbale Doksprachen im Online-Retrieval
  2. Deerwester, S.C.; Dumais, S.T.; Landauer, T.K.; Furnas, G.W.; Harshman, R.A.: Indexing by latent semantic analysis (1990) 0.00 
    0.0044962796 = product of:
  0.031473957 = sum of:
    0.0060537956 = weight(_text_:information in 2399) [ClassicSimilarity], result of:
      0.0060537956 = score(doc=2399,freq=2.0), product of:
        0.052020688 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.029633347 = queryNorm
        0.116372846 = fieldWeight in 2399, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=2399)
    0.025420163 = weight(_text_:retrieval in 2399) [ClassicSimilarity], result of:
      0.025420163 = score(doc=2399,freq=4.0), product of:
        0.08963835 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.029633347 = queryNorm
        0.2835858 = fieldWeight in 2399, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.046875 = fieldNorm(doc=2399)
  0.14285715 = coord(2/14)
    Abstract
    A new method for automatic indexing and retrieval is described. The approach is to take advantage of implicit higher-order structure in the association of terms with documents ("semantic structure") in order to improve the detection of relevant documents on the basis of terms found in queries. The particular technique used is singular-value decomposition, in which a large term by document matrix is decomposed into a set of ca 100 orthogonal factors from which the original matrix can be approximated by linear combination. Documents are represented by ca 100 item vectors of factor weights. Queries are represented as pseudo-document vectors formed from weighted combinations of terms, and documents with supra-threshold cosine values are returned. Initial tests find this completely automatic method for retrieval to be promising.
    Source
    Journal of the American Society for Information Science. 41(1990) no.6, S.391-407
  3. Furnas, G.W.; Landauer, T.K.: Describing categories of objects for menu retrieval systems (1984) 0.00 
    0.0034237658 = product of:
  0.047932718 = sum of:
    0.047932718 = weight(_text_:retrieval in 6507) [ClassicSimilarity], result of:
      0.047932718 = score(doc=6507,freq=2.0), product of:
        0.08963835 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.029633347 = queryNorm
        0.5347345 = fieldWeight in 6507, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.125 = fieldNorm(doc=6507)
  0.071428575 = coord(1/14)
  4. Landauer, T.K.; Foltz, P.W.; Laham, D.: ¬An introduction to Latent Semantic Analysis (1998) 0.00 
    0.0012839122 = product of:
  0.01797477 = sum of:
    0.01797477 = weight(_text_:retrieval in 1162) [ClassicSimilarity], result of:
      0.01797477 = score(doc=1162,freq=2.0), product of:
        0.08963835 = queryWeight, product of:
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.029633347 = queryNorm
        0.20052543 = fieldWeight in 1162, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.024915 = idf(docFreq=5836, maxDocs=44218)
          0.046875 = fieldNorm(doc=1162)
  0.071428575 = coord(1/14)
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval

Authors

Years

Types

Themes