Search (21 results, page 1 of 2)

  • × theme_ss:"Retrievalalgorithmen"
  • × type_ss:"a"
  • × year_i:[1990 TO 2000}
  1. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.02
    0.021695316 = product of:
      0.04339063 = sum of:
        0.04339063 = product of:
          0.06508595 = sum of:
            0.02179201 = weight(_text_:h in 1319) [ClassicSimilarity], result of:
              0.02179201 = score(doc=1319,freq=2.0), product of:
                0.113413334 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.045649286 = queryNorm
                0.19214681 = fieldWeight in 1319, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=1319)
            0.043293934 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
              0.043293934 = score(doc=1319,freq=2.0), product of:
                0.15985602 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045649286 = queryNorm
                0.2708308 = fieldWeight in 1319, 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=1319)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Date
    1. 8.1996 22:08:06
  2. Hüther, H.: Selix im DFG-Projekt Kascade (1998) 0.02
    0.020743795 = product of:
      0.04148759 = sum of:
        0.04148759 = product of:
          0.062231384 = sum of:
            0.04402651 = weight(_text_:h in 5151) [ClassicSimilarity], result of:
              0.04402651 = score(doc=5151,freq=4.0), product of:
                0.113413334 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.045649286 = queryNorm
                0.3881952 = fieldWeight in 5151, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.078125 = fieldNorm(doc=5151)
            0.018204873 = weight(_text_:d in 5151) [ClassicSimilarity], result of:
              0.018204873 = score(doc=5151,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.20990817 = fieldWeight in 5151, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.078125 = fieldNorm(doc=5151)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Language
    d
    Source
    Knowledge Management und Kommunikationssysteme: Proceedings des 6. Internationalen Symposiums für Informationswissenschaft (ISI '98) Prag, 3.-7. November 1998 / Hochschulverband für Informationswissenschaft (HI) e.V. Konstanz ; Fachrichtung Informationswissenschaft der Universität des Saarlandes, Saarbrücken. Hrsg.: Harald H. Zimmermann u. Volker Schramm
  3. Chakrabarti, S.; Dom, B.; Kumar, S.R.; Raghavan, P.; Rajagopalan, S.; Tomkins, A.; Kleinberg, J.M.; Gibson, D.: Neue Pfade durch den Internet-Dschungel : Die zweite Generation von Web-Suchmaschinen (1999) 0.02
    0.0151672065 = product of:
      0.030334413 = sum of:
        0.030334413 = product of:
          0.04550162 = sum of:
            0.024905154 = weight(_text_:h in 3) [ClassicSimilarity], result of:
              0.024905154 = score(doc=3,freq=2.0), product of:
                0.113413334 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.045649286 = queryNorm
                0.21959636 = fieldWeight in 3, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3)
            0.020596463 = weight(_text_:d in 3) [ClassicSimilarity], result of:
              0.020596463 = score(doc=3,freq=4.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.237484 = fieldWeight in 3, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Language
    d
    Source
    Spektrum der Wissenschaft. 1999, H.8, S.44-49
  4. Faloutsos, C.: Signature files (1992) 0.01
    0.008246465 = product of:
      0.01649293 = sum of:
        0.01649293 = product of:
          0.049478784 = sum of:
            0.049478784 = weight(_text_:22 in 3499) [ClassicSimilarity], result of:
              0.049478784 = score(doc=3499,freq=2.0), product of:
                0.15985602 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045649286 = queryNorm
                0.30952093 = fieldWeight in 3499, 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=3499)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    7. 5.1999 15:22:48
  5. Joss, M.W.; Wszola, S.: ¬The engines that can : text search and retrieval software, their strategies, and vendors (1996) 0.01
    0.006184848 = product of:
      0.012369696 = sum of:
        0.012369696 = product of:
          0.03710909 = sum of:
            0.03710909 = weight(_text_:22 in 5123) [ClassicSimilarity], result of:
              0.03710909 = score(doc=5123,freq=2.0), product of:
                0.15985602 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045649286 = queryNorm
                0.23214069 = fieldWeight in 5123, 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=5123)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    12. 9.1996 13:56:22
  6. Kelledy, F.; Smeaton, A.F.: Signature files and beyond (1996) 0.01
    0.006184848 = product of:
      0.012369696 = sum of:
        0.012369696 = product of:
          0.03710909 = sum of:
            0.03710909 = weight(_text_:22 in 6973) [ClassicSimilarity], result of:
              0.03710909 = score(doc=6973,freq=2.0), product of:
                0.15985602 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045649286 = queryNorm
                0.23214069 = fieldWeight in 6973, 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=6973)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
  7. Loughran, H.: ¬A review of nearest neighbour information retrieval (1994) 0.01
    0.005188574 = product of:
      0.010377148 = sum of:
        0.010377148 = product of:
          0.031131444 = sum of:
            0.031131444 = weight(_text_:h in 616) [ClassicSimilarity], result of:
              0.031131444 = score(doc=616,freq=2.0), product of:
                0.113413334 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.045649286 = queryNorm
                0.27449545 = fieldWeight in 616, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.078125 = fieldNorm(doc=616)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  8. Burgin, R.: ¬The retrieval effectiveness of 5 clustering algorithms as a function of indexing exhaustivity (1995) 0.01
    0.00515404 = product of:
      0.01030808 = sum of:
        0.01030808 = product of:
          0.03092424 = sum of:
            0.03092424 = weight(_text_:22 in 3365) [ClassicSimilarity], result of:
              0.03092424 = score(doc=3365,freq=2.0), product of:
                0.15985602 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045649286 = queryNorm
                0.19345059 = fieldWeight in 3365, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3365)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    22. 2.1996 11:20:06
  9. Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995) 0.01
    0.00515404 = product of:
      0.01030808 = sum of:
        0.01030808 = product of:
          0.03092424 = sum of:
            0.03092424 = weight(_text_:22 in 5697) [ClassicSimilarity], result of:
              0.03092424 = score(doc=5697,freq=2.0), product of:
                0.15985602 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045649286 = queryNorm
                0.19345059 = fieldWeight in 5697, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=5697)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    22. 2.1996 13:14:10
  10. Savoy, J.; Ndarugendamwo, M.; Vrajitoru, D.: Report on the TREC-4 experiment : combining probabilistic and vector-space schemes (1996) 0.00
    0.0036409746 = product of:
      0.0072819493 = sum of:
        0.0072819493 = product of:
          0.021845847 = sum of:
            0.021845847 = weight(_text_:d in 7574) [ClassicSimilarity], result of:
              0.021845847 = score(doc=7574,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.2518898 = fieldWeight in 7574, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.09375 = fieldNorm(doc=7574)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  11. Davis, C.H.; McKim, G.W.: Systematic weighting and ranking : cutting the Gordian knot (1999) 0.00
    0.0036320016 = product of:
      0.007264003 = sum of:
        0.007264003 = product of:
          0.02179201 = sum of:
            0.02179201 = weight(_text_:h in 3548) [ClassicSimilarity], result of:
              0.02179201 = score(doc=3548,freq=2.0), product of:
                0.113413334 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.045649286 = queryNorm
                0.19214681 = fieldWeight in 3548, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3548)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Footnote
    Vgl.: http://www.clarit.com/clhtml/h-weight.html (CLARIT); http://shakt.lib.indiana.edu/~swear/ (SWEAR)
  12. Chen, H.; Zhang, Y.; Houston, A.L.: Semantic indexing and searching using a Hopfield net (1998) 0.00
    0.003113144 = product of:
      0.006226288 = sum of:
        0.006226288 = product of:
          0.018678864 = sum of:
            0.018678864 = weight(_text_:h in 5704) [ClassicSimilarity], result of:
              0.018678864 = score(doc=5704,freq=2.0), product of:
                0.113413334 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.045649286 = queryNorm
                0.16469726 = fieldWeight in 5704, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.046875 = fieldNorm(doc=5704)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  13. Koopman, R.: ¬Ein OPAC mit Gewichtungsalgorithmen : Der PICA Micro OPC (1996) 0.00
    0.0030341456 = product of:
      0.006068291 = sum of:
        0.006068291 = product of:
          0.018204873 = sum of:
            0.018204873 = weight(_text_:d in 4114) [ClassicSimilarity], result of:
              0.018204873 = score(doc=4114,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.20990817 = fieldWeight in 4114, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.078125 = fieldNorm(doc=4114)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Language
    d
  14. Abu-Salem, H.; Al-Omari, M.; Evens, M.W.: Stemming methodologies over individual query words for an Arabic information retrieval system (1999) 0.00
    0.002594287 = product of:
      0.005188574 = sum of:
        0.005188574 = product of:
          0.015565722 = sum of:
            0.015565722 = weight(_text_:h in 3672) [ClassicSimilarity], result of:
              0.015565722 = score(doc=3672,freq=2.0), product of:
                0.113413334 = queryWeight, product of:
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.045649286 = queryNorm
                0.13724773 = fieldWeight in 3672, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4844491 = idf(docFreq=10020, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3672)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  15. Fuhr, N.: Zur Überwindung der Diskrepanz zwischen Retrievalforschung und -praxis (1990) 0.00
    0.0024273165 = product of:
      0.004854633 = sum of:
        0.004854633 = product of:
          0.014563899 = sum of:
            0.014563899 = weight(_text_:d in 6625) [ClassicSimilarity], result of:
              0.014563899 = score(doc=6625,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.16792654 = fieldWeight in 6625, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0625 = fieldNorm(doc=6625)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Language
    d
  16. Harman, D.; Fox, E.; Baeza-Yates, R.; Lee, W.: Inverted files (1992) 0.00
    0.0024273165 = product of:
      0.004854633 = sum of:
        0.004854633 = product of:
          0.014563899 = sum of:
            0.014563899 = weight(_text_:d in 3497) [ClassicSimilarity], result of:
              0.014563899 = score(doc=3497,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.16792654 = fieldWeight in 3497, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3497)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  17. Harman, D.: Relevance feedback and other query modification techniques (1992) 0.00
    0.0024273165 = product of:
      0.004854633 = sum of:
        0.004854633 = product of:
          0.014563899 = sum of:
            0.014563899 = weight(_text_:d in 3508) [ClassicSimilarity], result of:
              0.014563899 = score(doc=3508,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.16792654 = fieldWeight in 3508, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3508)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  18. Harman, D.: Ranking algorithms (1992) 0.00
    0.0024273165 = product of:
      0.004854633 = sum of:
        0.004854633 = product of:
          0.014563899 = sum of:
            0.014563899 = weight(_text_:d in 3511) [ClassicSimilarity], result of:
              0.014563899 = score(doc=3511,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.16792654 = fieldWeight in 3511, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3511)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  19. Wilbur, W.J.: ¬A retrieval system based on automatic relevance weighting of search terms (1992) 0.00
    0.0024273165 = product of:
      0.004854633 = sum of:
        0.004854633 = product of:
          0.014563899 = sum of:
            0.014563899 = weight(_text_:d in 5269) [ClassicSimilarity], result of:
              0.014563899 = score(doc=5269,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.16792654 = fieldWeight in 5269, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5269)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Proceedings of the 55th Annual Meeting of the American Society for Information Science, Pittsburgh, 26.-29.10.92. Ed.: D. Shaw
  20. Rada, R.; Barlow, J.; Potharst, J.; Zanstra, P.; Bijstra, D.: Document ranking using an enriched thesaurus (1991) 0.00
    0.0018204873 = product of:
      0.0036409746 = sum of:
        0.0036409746 = product of:
          0.010922924 = sum of:
            0.010922924 = weight(_text_:d in 6626) [ClassicSimilarity], result of:
              0.010922924 = score(doc=6626,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.1259449 = fieldWeight in 6626, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.046875 = fieldNorm(doc=6626)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)