Search (2 results, page 1 of 1)

  • × theme_ss:"Retrievalstudien"
  • × year_i:[1970 TO 1980}
  1. Schabas, A.H.: ¬A comparative evaluation of the retrieval effectiveness of titles, Library of Congress Subject Headings and PRECIS strings for computer searching of UK MARC data (1979) 0.02
    0.015936451 = product of:
      0.031872902 = sum of:
        0.031872902 = product of:
          0.063745804 = sum of:
            0.063745804 = weight(_text_:online in 5277) [ClassicSimilarity], result of:
              0.063745804 = score(doc=5277,freq=2.0), product of:
                0.15842392 = queryWeight, product of:
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.05220068 = queryNorm
                0.40237486 = fieldWeight in 5277, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.09375 = fieldNorm(doc=5277)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Theme
    Verbale Doksprachen im Online-Retrieval
  2. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01
    0.014144942 = product of:
      0.028289884 = sum of:
        0.028289884 = product of:
          0.05657977 = sum of:
            0.05657977 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
              0.05657977 = score(doc=5002,freq=2.0), product of:
                0.18279788 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05220068 = queryNorm
                0.30952093 = fieldWeight in 5002, 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=5002)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    19. 3.1996 11:22:12

Types