Search (1 results, page 1 of 1)

  • × author_ss:"Bollmann, P."
  • × type_ss:"a"
  • × year_i:[1980 TO 1990}
  1. Raghavan, V.V.; Jung, G.S.; Bollmann, P.: ¬A critical investigation of recall and precision as measures of retrieval system performance (1989) 0.01
    0.014287531 = product of:
      0.07143766 = sum of:
        0.07143766 = weight(_text_:7 in 3606) [ClassicSimilarity], result of:
          0.07143766 = score(doc=3606,freq=4.0), product of:
            0.17251469 = queryWeight, product of:
              3.3127685 = idf(docFreq=4376, maxDocs=44218)
              0.052075688 = queryNorm
            0.41409606 = fieldWeight in 3606, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.3127685 = idf(docFreq=4376, maxDocs=44218)
              0.0625 = fieldNorm(doc=3606)
      0.2 = coord(1/5)
    
    Date
    15. 1.1996 7:28:19
    Source
    ACM transactions on information systems. 7(1989) no.3, S.205-229