Search (2 results, page 1 of 1)

  • × author_ss:"Frei, H.P."
  • × year_i:[1990 TO 2000}
  1. Qiu, Y.; Frei, H.P.: Concept based query expansion (1993) 0.03 
    0.029081037 = product of:
  0.14540519 = sum of:
    0.14540519 = weight(_text_:thesaurus in 2678) [ClassicSimilarity], result of:
      0.14540519 = score(doc=2678,freq=2.0), product of:
        0.23732872 = queryWeight, product of:
          4.6210785 = idf(docFreq=1182, maxDocs=44218)
          0.051357865 = queryNorm
        0.61267424 = fieldWeight in 2678, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.6210785 = idf(docFreq=1182, maxDocs=44218)
          0.09375 = fieldNorm(doc=2678)
  0.2 = coord(1/5)
    Abstract
    Presentation of a probabilistic query expansion based on an automatically constructed similarity thesaurus. Such thesauri reflect the domain knowledge of their origin collection
  2. Frei, H.P.; Meienberg, S.: Evaluating weighted search terms as Boolean queries (1991) 0.01 
    0.011133251 = product of:
  0.055666253 = sum of:
    0.055666253 = weight(_text_:22 in 4159) [ClassicSimilarity], result of:
      0.055666253 = score(doc=4159,freq=2.0), product of:
        0.1798465 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051357865 = queryNorm
        0.30952093 = fieldWeight in 4159, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0625 = fieldNorm(doc=4159)
  0.2 = coord(1/5)
    Pages
    S.11-22

Authors