Search (9 results, page 1 of 1)

Grunder, R.: Qualitätskriterien für Datenbanken : Grundsätzliche Überlegungen und Untersuchung ausgewählter Aspekte am Beispiel bibliographischer Online-Datenbanken (1995) 0.03

0.031215612 = product of:
  0.062431224 = sum of:
    0.062431224 = product of:
      0.12486245 = sum of:
        0.12486245 = weight(_text_:x in 7107) [ClassicSimilarity], result of:
          0.12486245 = score(doc=7107,freq=2.0), product of:
            0.19116588 = queryWeight, product of:
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.045271195 = queryNorm
            0.65316284 = fieldWeight in 7107, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.109375 = fieldNorm(doc=7107)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Type: x

Lohmann, H.: Verbesserung der Literatursuche durch Dokumentanreicherung und automatische Inhaltserschließung : Das Projekt 'KASCADE' an der Universitäts- und Landesbibliothek Düsseldorf (1999) 0.03

0.026756238 = product of:
  0.053512476 = sum of:
    0.053512476 = product of:
      0.10702495 = sum of:
        0.10702495 = weight(_text_:x in 1221) [ClassicSimilarity], result of:
          0.10702495 = score(doc=1221,freq=2.0), product of:
            0.19116588 = queryWeight, product of:
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.045271195 = queryNorm
            0.55985385 = fieldWeight in 1221, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.09375 = fieldNorm(doc=1221)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Type: x

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

0.021467676 = product of:
  0.042935353 = sum of:
    0.042935353 = product of:
      0.085870706 = sum of:
        0.085870706 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
          0.085870706 = score(doc=262,freq=2.0), product of:
            0.15853201 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045271195 = 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

Griesbaum, J.: Evaluierung hybrider Suchsysteme im WWW (2000) 0.01

0.013378119 = product of:
  0.026756238 = sum of:
    0.026756238 = product of:
      0.053512476 = sum of:
        0.053512476 = weight(_text_:x in 2482) [ClassicSimilarity], result of:
          0.053512476 = score(doc=2482,freq=2.0), product of:
            0.19116588 = queryWeight, product of:
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.045271195 = queryNorm
            0.27992693 = fieldWeight in 2482, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.046875 = fieldNorm(doc=2482)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Type: x

Meyer, O.C.: Retrievalexperimente mit bibliothekarischen Daten : Historischer Überblick und aktueller Forschungsstand (2022) 0.01

0.013378119 = product of:
  0.026756238 = sum of:
    0.026756238 = product of:
      0.053512476 = sum of:
        0.053512476 = weight(_text_:x in 655) [ClassicSimilarity], result of:
          0.053512476 = score(doc=655,freq=2.0), product of:
            0.19116588 = queryWeight, product of:
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.045271195 = queryNorm
            0.27992693 = fieldWeight in 655, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.046875 = fieldNorm(doc=655)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Type: x

Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.01

0.012267244 = product of:
  0.024534488 = sum of:
    0.024534488 = product of:
      0.049068976 = sum of:
        0.049068976 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
          0.049068976 = score(doc=261,freq=2.0), product of:
            0.15853201 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045271195 = queryNorm
            0.30952093 = fieldWeight in 261, 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=261)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract: Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht

Scherer, B.: Automatische Indexierung und ihre Anwendung im DFG-Projekt "Gemeinsames Portal für Bibliotheken, Archive und Museen (BAM)" (2003) 0.01

0.011148433 = product of:
  0.022296866 = sum of:
    0.022296866 = product of:
      0.044593733 = sum of:
        0.044593733 = weight(_text_:x in 4283) [ClassicSimilarity], result of:
          0.044593733 = score(doc=4283,freq=2.0), product of:
            0.19116588 = queryWeight, product of:
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.045271195 = queryNorm
            0.23327245 = fieldWeight in 4283, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4283)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Type: x

Sünkler, S.: Prototypische Entwicklung einer Software für die Erfassung und Analyse explorativer Suchen in Verbindung mit Tests zur Retrievaleffektivität (2012) 0.01

0.011148433 = product of:
  0.022296866 = sum of:
    0.022296866 = product of:
      0.044593733 = sum of:
        0.044593733 = weight(_text_:x in 479) [ClassicSimilarity], result of:
          0.044593733 = score(doc=479,freq=2.0), product of:
            0.19116588 = queryWeight, product of:
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.045271195 = queryNorm
            0.23327245 = fieldWeight in 479, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.2226825 = idf(docFreq=1761, maxDocs=44218)
              0.0390625 = fieldNorm(doc=479)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Type: x

Reichert, S.; Mayr, P.: Untersuchung von Relevanzeigenschaften in einem kontrollierten Eyetracking-Experiment (2012) 0.01

0.009200432 = product of:
  0.018400865 = sum of:
    0.018400865 = product of:
      0.03680173 = sum of:
        0.03680173 = weight(_text_:22 in 328) [ClassicSimilarity], result of:
          0.03680173 = score(doc=328,freq=2.0), product of:
            0.15853201 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045271195 = queryNorm
            0.23214069 = fieldWeight in 328, 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=328)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 7.2012 19:25:54

Search (9 results, page 1 of 1)

Authors

Years

Types

Themes