Search (6 results, page 1 of 1)

Rijsbergen, C.J. van: Retrieval effectiveness (1981) 0.09

0.09336381 = product of:
  0.18672761 = sum of:
    0.18672761 = product of:
      0.37345523 = sum of:
        0.37345523 = weight(_text_:c.j in 3147) [ClassicSimilarity], result of:
          0.37345523 = score(doc=3147,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            1.2258956 = fieldWeight in 3147, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.125 = fieldNorm(doc=3147)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Information retrieval experiment (1981) 0.04
```
0.040846664 = product of:
  0.08169333 = sum of:
    0.08169333 = product of:
      0.16338666 = sum of:
        0.16338666 = weight(_text_:c.j in 2653) [ClassicSimilarity], result of:
          0.16338666 = score(doc=2653,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            0.5363293 = fieldWeight in 2653, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2653)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
```
Content

Enthält die Beiträge: ROBERTSON, S.E.: The methodology of information retrieval experiment; RIJSBERGEN, C.J. van: Retrieval effectiveness; BELKIN, N.: Ineffable concepts in information retrieval; TAGUE, J.M.: The pragmatics of information retrieval experimentation; LANCASTER, F.W.: Evaluation within the environment of an operating information service; BARRACLOUGH, E.D.: Opportunities for testing with online systems; KEEN, M.E.: Laboratory tests of manual systems; ODDY, R.N.: Laboratory tests: automatic systems; HEINE, M.D.: Simulation, and simulation experiments; COOPER, W.S.: Gedanken experimentation: an alternative to traditional system testing?; SPARCK JONES, K.: Actual tests - retrieval system tests; EVANS, L.: An experiment: search strategy variation in SDI profiles; SALTON, G.: The Smart environment for retrieval system evaluation - advantage and problem areas

Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.02

0.020831455 = product of:
  0.04166291 = sum of:
    0.04166291 = product of:
      0.08332582 = sum of:
        0.08332582 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
          0.08332582 = score(doc=262,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.5416616 = fieldWeight in 262, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=262)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 20.10.2000 12:22:23

Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.01

0.014879611 = product of:
  0.029759223 = sum of:
    0.029759223 = product of:
      0.059518445 = sum of:
        0.059518445 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
          0.059518445 = score(doc=2417,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.38690117 = fieldWeight in 2417, 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=2417)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Pages: S.22-25

Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.01

0.010415727 = product of:
  0.020831455 = sum of:
    0.020831455 = product of:
      0.04166291 = sum of:
        0.04166291 = weight(_text_:22 in 5001) [ClassicSimilarity], result of:
          0.04166291 = score(doc=5001,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.2708308 = fieldWeight in 5001, 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=5001)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 14. 3.1996 13:22:21

Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989) 0.01

0.008927766 = product of:
  0.017855532 = sum of:
    0.017855532 = product of:
      0.035711065 = sum of:
        0.035711065 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
          0.035711065 = score(doc=3564,freq=2.0), product of:
            0.15383372 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04392953 = queryNorm
            0.23214069 = fieldWeight in 3564, 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=3564)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 9. 1.1996 10:22:31

Search (6 results, page 1 of 1)

Authors

Languages

Types

Themes