Search (62 results, page 1 of 4)

Fugmann, R.; Winter, J.H.: Reverse retrieval : toward analogy inferences by mechanized classification (treatise 7 on retrieval system theory) (1979) 0.11

0.10616213 = product of:
  0.26540533 = sum of:
    0.010897844 = weight(_text_:a in 4771) [ClassicSimilarity], result of:
      0.010897844 = score(doc=4771,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.20383182 = fieldWeight in 4771, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=4771)
    0.25450748 = weight(_text_:91 in 4771) [ClassicSimilarity], result of:
      0.25450748 = score(doc=4771,freq=2.0), product of:
        0.25837386 = queryWeight, product of:
          5.5722036 = idf(docFreq=456, maxDocs=44218)
          0.046368346 = queryNorm
        0.9850357 = fieldWeight in 4771, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.5722036 = idf(docFreq=456, maxDocs=44218)
          0.125 = fieldNorm(doc=4771)
  0.4 = coord(2/5)

Source: International classification. 6(1979), S.85-91
Type: a

Fugmann, R.: What is information? : an information veteran looks back (2022) 0.04

0.04197444 = product of:
  0.1049361 = sum of:
    0.0068111527 = weight(_text_:a in 1085) [ClassicSimilarity], result of:
      0.0068111527 = score(doc=1085,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.12739488 = fieldWeight in 1085, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.078125 = fieldNorm(doc=1085)
    0.09812495 = sum of:
      0.035302248 = weight(_text_:information in 1085) [ClassicSimilarity], result of:
        0.035302248 = score(doc=1085,freq=10.0), product of:
          0.08139861 = queryWeight, product of:
            1.7554779 = idf(docFreq=20772, maxDocs=44218)
            0.046368346 = queryNorm
          0.43369597 = fieldWeight in 1085, product of:
            3.1622777 = tf(freq=10.0), with freq of:
              10.0 = termFreq=10.0
            1.7554779 = idf(docFreq=20772, maxDocs=44218)
            0.078125 = fieldNorm(doc=1085)
      0.06282271 = weight(_text_:22 in 1085) [ClassicSimilarity], result of:
        0.06282271 = score(doc=1085,freq=2.0), product of:
          0.16237405 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046368346 = queryNorm
          0.38690117 = fieldWeight in 1085, 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=1085)
  0.4 = coord(2/5)

Content: Vgl.: https://www.nomos-elibrary.de/10.5771/0943-7444-2022-1-3/what-is-information-an-information-veteran-looks-back-jahrgang-49-2022-heft-1?page=1.
Date: 18. 8.2022 19:22:57
Theme: Information
Type: a

Fugmann, R.: Obstacles to progress in mechanized subject access and the necessity of a paradigm change (2000) 0.02

0.020076003 = product of:
  0.050190005 = sum of:
    0.0076151006 = weight(_text_:a in 1182) [ClassicSimilarity], result of:
      0.0076151006 = score(doc=1182,freq=10.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.14243183 = fieldWeight in 1182, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1182)
    0.042574905 = sum of:
      0.011163551 = weight(_text_:information in 1182) [ClassicSimilarity], result of:
        0.011163551 = score(doc=1182,freq=4.0), product of:
          0.08139861 = queryWeight, product of:
            1.7554779 = idf(docFreq=20772, maxDocs=44218)
            0.046368346 = queryNorm
          0.13714671 = fieldWeight in 1182, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            1.7554779 = idf(docFreq=20772, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1182)
      0.031411353 = weight(_text_:22 in 1182) [ClassicSimilarity], result of:
        0.031411353 = score(doc=1182,freq=2.0), product of:
          0.16237405 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046368346 = queryNorm
          0.19345059 = fieldWeight in 1182, 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=1182)
  0.4 = coord(2/5)

Abstract: Contemporary information systems, both the private and the commercially available ones, have often been blamed for their low effectiveness in terms of precision and recall, especially when they have reached considerable size with respect to file volume and use frequency (see, for example, Belkin, 1980; Blair, 1996, p.19; Desai, 1997; Drabenstott, 1996; Knorz, 1998). Saracevic (1989), after having reviewed the contemporary design of online subject access, calls "for radically different design principles and implementation" (p. 107). Van Rijsbergen (1990) writes: "The keywords approach with statistical techniques has reached its theoretical limit and further attempts for improvement are considered a waste of time" (p. 111). Lancaster (1992) deplores that very little really significant literature an subject indexing has been published in the last thirty or so years. In her preface to the Proceedings of the Sixth International Study Conference an Classification Research in 1997, Mcllwaine (1997) writes, "many were surprised to find that the problems with which they wrestle today are not greatly different from those that have been occupying the minds of specialists in the field for over a generation, and probably a great deal longer" (p. v).
Date: 22. 9.1997 19:16:05
Imprint: Urbana-Champaign, IL : Illinois University at Urbana-Champaign, Graduate School of Library and Information Science
Type: a

Fugmann, R.: Peculiarities of chemical information from a theoretical viewpoint (1985) 0.01

0.013309426 = product of:
  0.033273563 = sum of:
    0.01541188 = weight(_text_:a in 4026) [ClassicSimilarity], result of:
      0.01541188 = score(doc=4026,freq=4.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.28826174 = fieldWeight in 4026, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=4026)
    0.017861681 = product of:
      0.035723362 = sum of:
        0.035723362 = weight(_text_:information in 4026) [ClassicSimilarity], result of:
          0.035723362 = score(doc=4026,freq=4.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.43886948 = fieldWeight in 4026, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=4026)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Source: Journal of chemical information and computer sciences. 25(1985), S.174-180
Type: a

Fugmann, R.: ¬The theoretical foundation of the IDC-system : 6 postulates for information retrieval; treatise 1 on information retrieval theory (1972) 0.01

0.01150381 = product of:
  0.028759524 = sum of:
    0.010897844 = weight(_text_:a in 1672) [ClassicSimilarity], result of:
      0.010897844 = score(doc=1672,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.20383182 = fieldWeight in 1672, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=1672)
    0.017861681 = product of:
      0.035723362 = sum of:
        0.035723362 = weight(_text_:information in 1672) [ClassicSimilarity], result of:
          0.035723362 = score(doc=1672,freq=4.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.43886948 = fieldWeight in 1672, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=1672)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Type: a

Fugmann, R.: ¬The5[¬five] axiom theory of indexing and information supply (1985) 0.01

0.01150381 = product of:
  0.028759524 = sum of:
    0.010897844 = weight(_text_:a in 1944) [ClassicSimilarity], result of:
      0.010897844 = score(doc=1944,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.20383182 = fieldWeight in 1944, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=1944)
    0.017861681 = product of:
      0.035723362 = sum of:
        0.035723362 = weight(_text_:information in 1944) [ClassicSimilarity], result of:
          0.035723362 = score(doc=1944,freq=4.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.43886948 = fieldWeight in 1944, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=1944)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Source: Journal of the American Society for Information Science. 36(1985) no.2, S.116-129
Type: a

Fugmann, R.: On the role of subjectivity in establishing, using, operating and evaluating information retrieval systems : treatise 2 on information retrieval theory (1973) 0.01

0.011470848 = product of:
  0.028677119 = sum of:
    0.009535614 = weight(_text_:a in 1673) [ClassicSimilarity], result of:
      0.009535614 = score(doc=1673,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.17835285 = fieldWeight in 1673, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.109375 = fieldNorm(doc=1673)
    0.019141505 = product of:
      0.03828301 = sum of:
        0.03828301 = weight(_text_:information in 1673) [ClassicSimilarity], result of:
          0.03828301 = score(doc=1673,freq=6.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.47031528 = fieldWeight in 1673, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=1673)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Source: Information storage and retrieval. 9(1973), S.353-372
Type: a

Fugmann, R.: Toward a theory of information supply and indexing : treatise 6 on retrieval system theory (1976) 0.01

0.011216799 = product of:
  0.028041996 = sum of:
    0.01541188 = weight(_text_:a in 4766) [ClassicSimilarity], result of:
      0.01541188 = score(doc=4766,freq=4.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.28826174 = fieldWeight in 4766, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=4766)
    0.012630116 = product of:
      0.025260232 = sum of:
        0.025260232 = weight(_text_:information in 4766) [ClassicSimilarity], result of:
          0.025260232 = score(doc=4766,freq=2.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.3103276 = fieldWeight in 4766, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=4766)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Type: a

Fugmann, R.; Kusemann, G.; Winter, H.J.: ¬The supply of information an chemical reactions in the IDC system (1979) 0.01

0.010065834 = product of:
  0.025164586 = sum of:
    0.009535614 = weight(_text_:a in 1648) [ClassicSimilarity], result of:
      0.009535614 = score(doc=1648,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.17835285 = fieldWeight in 1648, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.109375 = fieldNorm(doc=1648)
    0.015628971 = product of:
      0.031257942 = sum of:
        0.031257942 = weight(_text_:information in 1648) [ClassicSimilarity], result of:
          0.031257942 = score(doc=1648,freq=4.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.3840108 = fieldWeight in 1648, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=1648)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Source: Information storage and retrieval. 15(1979), S.303-323
Type: a

Fugmann, R.: Indexieren: die Schwachstelle bei der Bürokommunikation (1988) 0.01

0.009411185 = product of:
  0.023527961 = sum of:
    0.010897844 = weight(_text_:a in 1208) [ClassicSimilarity], result of:
      0.010897844 = score(doc=1208,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.20383182 = fieldWeight in 1208, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=1208)
    0.012630116 = product of:
      0.025260232 = sum of:
        0.025260232 = weight(_text_:information in 1208) [ClassicSimilarity], result of:
          0.025260232 = score(doc=1208,freq=2.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.3103276 = fieldWeight in 1208, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=1208)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Source: Mitteilungsblatt. Fachgruppe Chemie-Information. 13(1988), S.77-80
Type: a

Fugmann, R.: ¬The glamour and the misery of the thesaurus approach : treatise 4 on information retrieval theory (1974) 0.01

0.009411185 = product of:
  0.023527961 = sum of:
    0.010897844 = weight(_text_:a in 1671) [ClassicSimilarity], result of:
      0.010897844 = score(doc=1671,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.20383182 = fieldWeight in 1671, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=1671)
    0.012630116 = product of:
      0.025260232 = sum of:
        0.025260232 = weight(_text_:information in 1671) [ClassicSimilarity], result of:
          0.025260232 = score(doc=1671,freq=2.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.3103276 = fieldWeight in 1671, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=1671)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Type: a

Fugmann, R.; Isenberg, M.; Winter, J.H.: ¬Das Suchen nach verallgemeinerter Information : treatise 9 on retrieval system theory (1985) 0.01

0.009411185 = product of:
  0.023527961 = sum of:
    0.010897844 = weight(_text_:a in 1680) [ClassicSimilarity], result of:
      0.010897844 = score(doc=1680,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.20383182 = fieldWeight in 1680, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.125 = fieldNorm(doc=1680)
    0.012630116 = product of:
      0.025260232 = sum of:
        0.025260232 = weight(_text_:information in 1680) [ClassicSimilarity], result of:
          0.025260232 = score(doc=1680,freq=2.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.3103276 = fieldWeight in 1680, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=1680)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Type: a

Fugmann, R.; Nickelsen, H.; Nickelsen, I.; Winter, J.H.: Representation of concept relations using the TOSAR system of IDC : treatise 3 on information retrieval theory (1974) 0.01

0.008627858 = product of:
  0.021569645 = sum of:
    0.008173384 = weight(_text_:a in 1674) [ClassicSimilarity], result of:
      0.008173384 = score(doc=1674,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.15287387 = fieldWeight in 1674, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.09375 = fieldNorm(doc=1674)
    0.013396261 = product of:
      0.026792523 = sum of:
        0.026792523 = weight(_text_:information in 1674) [ClassicSimilarity], result of:
          0.026792523 = score(doc=1674,freq=4.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.3291521 = fieldWeight in 1674, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.09375 = fieldNorm(doc=1674)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Source: Journal of the American Society for Information Science. 25(1974), S.287-307
Type: a

Fugmann, R.: On the practice of indexing and its theoretical foundations (1980) 0.01

0.0084460005 = product of:
  0.021115001 = sum of:
    0.012184162 = weight(_text_:a in 1679) [ClassicSimilarity], result of:
      0.012184162 = score(doc=1679,freq=10.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.22789092 = fieldWeight in 1679, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.0625 = fieldNorm(doc=1679)
    0.0089308405 = product of:
      0.017861681 = sum of:
        0.017861681 = weight(_text_:information in 1679) [ClassicSimilarity], result of:
          0.017861681 = score(doc=1679,freq=4.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.21943474 = fieldWeight in 1679, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0625 = fieldNorm(doc=1679)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Abstract: This article introduces a series of 8 papers giving a survey of the decisions to be made in the choice of the most expedient indexing method and presenting a short description of the contents of each of the papers, namely: the definability of the requested information; individual vs. generic concepts; the predictibility of their mode of expression; the fidelity of concept representation: the indexing language vocabulary; the indexing language grammar; the category-controlled interplay between vocabulary and grammar in an indexing language; the practice of information supply: the personal file; the employment of a large indexing language vocabulary; eth employment of an indexing language syntax
Type: a

Fugmann, R.: Informationstheorie: Der Jahrhundertbluff : Eine zeitkritische Betrachtung (Teil 2) (2008) 0.01

0.008193462 = product of:
  0.020483656 = sum of:
    0.0068111527 = weight(_text_:a in 829) [ClassicSimilarity], result of:
      0.0068111527 = score(doc=829,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.12739488 = fieldWeight in 829, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.078125 = fieldNorm(doc=829)
    0.013672504 = product of:
      0.027345007 = sum of:
        0.027345007 = weight(_text_:information in 829) [ClassicSimilarity], result of:
          0.027345007 = score(doc=829,freq=6.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.3359395 = fieldWeight in 829, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.078125 = fieldNorm(doc=829)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Content: Vgl. Teil 1 in: Information - Wissenschaft und Praxis. 58(2007) H.8, S.449-458.
Source: Information - Wissenschaft und Praxis. 59(2008) H.3, S.159-164
Theme: Information
Type: a

Fugmann, R.: ¬The empirical approach in the evaluation of information systems (1999) 0.01

0.0077237748 = product of:
  0.019309437 = sum of:
    0.008258085 = weight(_text_:a in 4115) [ClassicSimilarity], result of:
      0.008258085 = score(doc=4115,freq=6.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.1544581 = fieldWeight in 4115, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4115)
    0.011051352 = product of:
      0.022102704 = sum of:
        0.022102704 = weight(_text_:information in 4115) [ClassicSimilarity], result of:
          0.022102704 = score(doc=4115,freq=8.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.27153665 = fieldWeight in 4115, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0546875 = fieldNorm(doc=4115)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Abstract: The comparative evaluation of different mechanized information systems continues to constitute a controversial topic in the literature. Diametrically differemt opinions, seemingly corroborated through empirical evidence, have been presented since the time of the Cranfield experiments. For literally anything an empirical 'proof' can be submitted provided that suitable examples are selected and methods are chosen. substantial advance in Library and Information Science requires abandoning empiricism. Budd's 'hermeneutic phenomenoloy' seems to constitute a promising substitute
Theme: Information
Type: a

Fugmann, R.: Learning the lessons of the past (2004) 0.01

0.007189882 = product of:
  0.017974705 = sum of:
    0.0068111527 = weight(_text_:a in 4169) [ClassicSimilarity], result of:
      0.0068111527 = score(doc=4169,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.12739488 = fieldWeight in 4169, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.078125 = fieldNorm(doc=4169)
    0.011163551 = product of:
      0.022327103 = sum of:
        0.022327103 = weight(_text_:information in 4169) [ClassicSimilarity], result of:
          0.022327103 = score(doc=4169,freq=4.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.27429342 = fieldWeight in 4169, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.078125 = fieldNorm(doc=4169)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Imprint: Medford, NJ : Information Today
Source: ¬The history and heritage of scientific and technological information systems: Proceedings of the 2002 Conference. Ed. by W. Boyd Rayward, Mary Ellen Bowden
Type: a

Fugmann, R.: Representational predictibility : key to the resolution of several pending issues in indexing and information supply (1994) 0.01

0.00711762 = product of:
  0.01779405 = sum of:
    0.0067426977 = weight(_text_:a in 7739) [ClassicSimilarity], result of:
      0.0067426977 = score(doc=7739,freq=4.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.12611452 = fieldWeight in 7739, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.0546875 = fieldNorm(doc=7739)
    0.011051352 = product of:
      0.022102704 = sum of:
        0.022102704 = weight(_text_:information in 7739) [ClassicSimilarity], result of:
          0.022102704 = score(doc=7739,freq=8.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.27153665 = fieldWeight in 7739, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0546875 = fieldNorm(doc=7739)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Abstract: The low effectiveness of most current information systems has often been pointed out and deplored. A number of misconceptions and experiments under unrealistic conditions have contributed to the faulty design and evaluation of information systems. The postulate of representational predictibility can help to clarify some of the still pending issues as there are the strenghts and limitations of uncontrolled natural language text in retrieval systems, factors for their evaluation, the reliability, consistency, and exhaustivity of indexing, the postulated 'inverse precision-recall relationship', and the usefulness of syntactical evices. The performance of information systems can be imporved if representational predictibility is aimed at in their design and operational use
Type: a

Fugmann, R.: ¬Die Suppeneuphorie : eine zeitkritische Satire (2013) 0.01

0.007058388 = product of:
  0.01764597 = sum of:
    0.008173384 = weight(_text_:a in 804) [ClassicSimilarity], result of:
      0.008173384 = score(doc=804,freq=2.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.15287387 = fieldWeight in 804, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.09375 = fieldNorm(doc=804)
    0.009472587 = product of:
      0.018945174 = sum of:
        0.018945174 = weight(_text_:information in 804) [ClassicSimilarity], result of:
          0.018945174 = score(doc=804,freq=2.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.23274569 = fieldWeight in 804, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.09375 = fieldNorm(doc=804)
      0.5 = coord(1/2)
  0.4 = coord(2/5)

Source: Information - Wissenschaft und Praxis. 64(2013) H.6, S.361-364
Type: a

Fugmann, R.: ¬The complementarity of natural and indexing languages (1985) 0.01
```
0.005863768 = product of:
  0.01465942 = sum of:
    0.010194 = weight(_text_:a in 3641) [ClassicSimilarity], result of:
      0.010194 = score(doc=3641,freq=28.0), product of:
        0.053464882 = queryWeight, product of:
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.046368346 = queryNorm
        0.19066721 = fieldWeight in 3641, product of:
          5.2915025 = tf(freq=28.0), with freq of:
            28.0 = termFreq=28.0
          1.153047 = idf(docFreq=37942, maxDocs=44218)
          0.03125 = fieldNorm(doc=3641)
    0.0044654203 = product of:
      0.0089308405 = sum of:
        0.0089308405 = weight(_text_:information in 3641) [ClassicSimilarity], result of:
          0.0089308405 = score(doc=3641,freq=4.0), product of:
            0.08139861 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046368346 = queryNorm
            0.10971737 = fieldWeight in 3641, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.03125 = fieldNorm(doc=3641)
      0.5 = coord(1/2)
  0.4 = coord(2/5)
```
Abstract

The second Cranfield experiment (Cranfield II) in the mid-1960s challenged assumptions held by librarians for nearly a century, namely, that the objective of providing subject access was to bring together all materials an a given topic and that the achieving of this objective required vocabulary control in the form of an index language. The results of Cranfield II were replicated by other retrieval experiments quick to follow its lead and increasing support was given to the opinion that natural language information systems could perform at least as effectively, and certainly more economically, than those employing index languages. When the results of empirical research dramatically counter conventional wisdom, an obvious course is to question the validity of the research and, in the case of retrieval experiments, this eventually happened. Retrieval experiments were criticized for their artificiality, their unrepresentative sampies, and their problematic definitions-particularly the definition of relevance. In the minds of some, at least, the relative merits of natural languages vs. indexing languages continued to be an unresolved issue. As with many eitherlor options, a seemingly safe course to follow is to opt for "both," and indeed there seems to be an increasing amount of counsel advising a combination of natural language and index language search capabilities. One strong voice offering such counsel is that of Robert Fugmann, a chemist by training, a theoretician by predilection, and, currently, a practicing information scientist at Hoechst AG, Frankfurt/Main. This selection from his writings sheds light an the capabilities and limitations of both kinds of indexing. Its special significance lies in the fact that its arguments are based not an empirical but an rational grounds. Fugmann's major argument starts from the observation that in natural language there are essentially two different kinds of concepts: 1) individual concepts, repre sented by names of individual things (e.g., the name of the town Augsburg), and 2) general concepts represented by names of classes of things (e.g., pesticides). Individual concepts can be represented in language simply and succinctly, often by a single string of alphanumeric characters; general concepts, an the other hand, can be expressed in a multiplicity of ways. The word pesticides refers to the concept of pesticides, but also referring to this concept are numerous circumlocutions, such as "Substance X was effective against pests." Because natural language is capable of infinite variety, we cannot predict a priori the manifold ways a general concept, like pesticides, will be represented by any given author. It is this lack of predictability that limits natural language retrieval and causes poor precision and recall. Thus, the essential and defining characteristic of an index language ls that it is a tool for representational predictability.

Source

Theory of subject analysis: a sourcebook. Ed.: L.M. Chan, et al

Type

a

Search (62 results, page 1 of 4)

Authors

Years

Languages

Types

Themes

Subjects

Classifications