Search (5 results, page 1 of 1)

0.10902205 = product of:
  0.2180441 = sum of:
    0.2180441 = product of:
      0.4360882 = sum of:
        0.4360882 = weight(_text_:worm in 2918) [ClassicSimilarity], result of:
          0.4360882 = score(doc=2918,freq=10.0), product of:
            0.4123537 = queryWeight, product of:
              8.561393 = idf(docFreq=22, maxDocs=44218)
              0.048164323 = queryNorm
            1.0575587 = fieldWeight in 2918, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              8.561393 = idf(docFreq=22, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2918)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

Reports an algorithmic approach to the automatic generation of thesauri for electronic community systems. The techniques used included terms filtering, automatic indexing, and cluster analysis. The testbed for the research was the Worm Community System, which contains a comprehensive library of specialized community data and literature, currently in use by molecular biologists who study the nematode worm. The resulting worm thesaurus included 2709 researchers' names, 798 gene names, 20 experimental methods, and 4302 subject descriptors. On average, each term had about 90 weighted neighbouring terms indicating relevant concepts. The thesaurus was developed as an online search aide. Tests the worm thesaurus in an experiment with 6 worm researchers of varying degrees of expertise and background. The experiment showed that the thesaurus was an excellent 'memory jogging' device and that it supported learning and serendipitous browsing. Despite some occurrences of obvious noise, the system was useful in suggesting relevant concepts for the researchers' queries and it helped improve concept recall. With a simple browsing interface, an automatic thesaurus can become a useful tool for online search and can assist researchers in exploring and traversing a dynamic and complex electronic community system

0.013051202 = product of:
  0.026102403 = sum of:
    0.026102403 = product of:
      0.052204806 = sum of:
        0.052204806 = weight(_text_:22 in 3734) [ClassicSimilarity], result of:
          0.052204806 = score(doc=3734,freq=2.0), product of:
            0.16866325 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.048164323 = queryNorm
            0.30952093 = fieldWeight in 3734, 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=3734)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source

Searcher. 3(1995) no.8, S.18-22

0.011419801 = product of:
  0.022839602 = sum of:
    0.022839602 = product of:
      0.045679204 = sum of:
        0.045679204 = weight(_text_:22 in 7238) [ClassicSimilarity], result of:
          0.045679204 = score(doc=7238,freq=2.0), product of:
            0.16866325 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.048164323 = queryNorm
            0.2708308 = fieldWeight in 7238, 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=7238)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 4.1997 20:43:23

0.008157001 = product of:
  0.016314002 = sum of:
    0.016314002 = product of:
      0.032628004 = sum of:
        0.032628004 = weight(_text_:22 in 2337) [ClassicSimilarity], result of:
          0.032628004 = score(doc=2337,freq=2.0), product of:
            0.16866325 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.048164323 = queryNorm
            0.19345059 = fieldWeight in 2337, 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=2337)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 9.1997 19:16:05

0.008075019 = product of:
  0.016150039 = sum of:
    0.016150039 = product of:
      0.032300077 = sum of:
        0.032300077 = weight(_text_:22 in 4360) [ClassicSimilarity], result of:
          0.032300077 = score(doc=4360,freq=4.0), product of:
            0.16866325 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.048164323 = queryNorm
            0.19150631 = fieldWeight in 4360, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.02734375 = fieldNorm(doc=4360)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

15. 7.2018 16:22:16

Footnote

Rez. in: Mitteilungen VÖB 48(1995) H.1, S.66-68 (K. Niedermair) - Vgl. auch Lepsky, K. in: Bibliotheksdienst 29(1995) H.3, S.500-519; Bibliothek: Forschung u. Praxis 19(1995) H.2, S.251-254 (G. Hartwieg; auch in: LDV-Forum Bd. 12, Nr. 2, Jg. 1995, S.22-29 [unter: http://www.jlcl.org/1995_Heft2/Rezensionen_19-27.pdf]) .