Search (96 results, page 1 of 5)

0.4378687 = product of:
  0.5254425 = sum of:
    0.030773548 = weight(_text_:und in 3807) [ClassicSimilarity], result of:
      0.030773548 = score(doc=3807,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.29385152 = fieldWeight in 3807, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.09375 = fieldNorm(doc=3807)
    0.14684197 = weight(_text_:anwendung in 3807) [ClassicSimilarity], result of:
      0.14684197 = score(doc=3807,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.6418954 = fieldWeight in 3807, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.09375 = fieldNorm(doc=3807)
    0.04804372 = weight(_text_:des in 3807) [ClassicSimilarity], result of:
      0.04804372 = score(doc=3807,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.36716178 = fieldWeight in 3807, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.09375 = fieldNorm(doc=3807)
    0.20518874 = weight(_text_:prinzips in 3807) [ClassicSimilarity], result of:
      0.20518874 = score(doc=3807,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.75878 = fieldWeight in 3807, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.09375 = fieldNorm(doc=3807)
    0.09459451 = product of:
      0.18918902 = sum of:
        0.18918902 = weight(_text_:thesaurus in 3807) [ClassicSimilarity], result of:
          0.18918902 = score(doc=3807,freq=4.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.8664522 = fieldWeight in 3807, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.09375 = fieldNorm(doc=3807)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.3456503 = product of:
  0.41478035 = sum of:
    0.025644625 = weight(_text_:und in 5346) [ClassicSimilarity], result of:
      0.025644625 = score(doc=5346,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.24487628 = fieldWeight in 5346, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.078125 = fieldNorm(doc=5346)
    0.12236831 = weight(_text_:anwendung in 5346) [ClassicSimilarity], result of:
      0.12236831 = score(doc=5346,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.5349128 = fieldWeight in 5346, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.078125 = fieldNorm(doc=5346)
    0.040036436 = weight(_text_:des in 5346) [ClassicSimilarity], result of:
      0.040036436 = score(doc=5346,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.30596817 = fieldWeight in 5346, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.078125 = fieldNorm(doc=5346)
    0.17099062 = weight(_text_:prinzips in 5346) [ClassicSimilarity], result of:
      0.17099062 = score(doc=5346,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.6323167 = fieldWeight in 5346, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.078125 = fieldNorm(doc=5346)
    0.055740345 = product of:
      0.11148069 = sum of:
        0.11148069 = weight(_text_:thesaurus in 5346) [ClassicSimilarity], result of:
          0.11148069 = score(doc=5346,freq=2.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.5105618 = fieldWeight in 5346, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.078125 = fieldNorm(doc=5346)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.2919125 = product of:
  0.350295 = sum of:
    0.0205157 = weight(_text_:und in 5625) [ClassicSimilarity], result of:
      0.0205157 = score(doc=5625,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.19590102 = fieldWeight in 5625, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0625 = fieldNorm(doc=5625)
    0.097894646 = weight(_text_:anwendung in 5625) [ClassicSimilarity], result of:
      0.097894646 = score(doc=5625,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.42793027 = fieldWeight in 5625, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.0625 = fieldNorm(doc=5625)
    0.03202915 = weight(_text_:des in 5625) [ClassicSimilarity], result of:
      0.03202915 = score(doc=5625,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.24477452 = fieldWeight in 5625, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.0625 = fieldNorm(doc=5625)
    0.1367925 = weight(_text_:prinzips in 5625) [ClassicSimilarity], result of:
      0.1367925 = score(doc=5625,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.50585335 = fieldWeight in 5625, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.0625 = fieldNorm(doc=5625)
    0.06306301 = product of:
      0.12612602 = sum of:
        0.12612602 = weight(_text_:thesaurus in 5625) [ClassicSimilarity], result of:
          0.12612602 = score(doc=5625,freq=4.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.5776348 = fieldWeight in 5625, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.0625 = fieldNorm(doc=5625)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.25542343 = product of:
  0.30650812 = sum of:
    0.017951237 = weight(_text_:und in 3132) [ClassicSimilarity], result of:
      0.017951237 = score(doc=3132,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.17141339 = fieldWeight in 3132, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3132)
    0.08565781 = weight(_text_:anwendung in 3132) [ClassicSimilarity], result of:
      0.08565781 = score(doc=3132,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.37443897 = fieldWeight in 3132, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3132)
    0.028025504 = weight(_text_:des in 3132) [ClassicSimilarity], result of:
      0.028025504 = score(doc=3132,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.2141777 = fieldWeight in 3132, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3132)
    0.11969343 = weight(_text_:prinzips in 3132) [ClassicSimilarity], result of:
      0.11969343 = score(doc=3132,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.44262168 = fieldWeight in 3132, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3132)
    0.055180132 = product of:
      0.110360265 = sum of:
        0.110360265 = weight(_text_:thesaurus in 3132) [ClassicSimilarity], result of:
          0.110360265 = score(doc=3132,freq=4.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.50543046 = fieldWeight in 3132, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3132)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

The Electronic Libraries and Information Highways MITRE Sponsored Research project aims to help searchers working in digital libraries increase their chance of matching the language of authors. Focuses on whether query formulation can be improved through the addition of semantic knowledge that is interactively gathered from a thesaurus that exists in a distributed, interoperating, cooperative environment. A prototype, ELVIS, was built that improves information retrieval through query expansion and is based on publicly available Z39.50 standard thesauri integrated with networked information discovery and retrieval tools

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.2477877 = product of:
  0.29734525 = sum of:
    0.015386774 = weight(_text_:und in 2658) [ClassicSimilarity], result of:
      0.015386774 = score(doc=2658,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.14692576 = fieldWeight in 2658, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=2658)
    0.07342099 = weight(_text_:anwendung in 2658) [ClassicSimilarity], result of:
      0.07342099 = score(doc=2658,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.3209477 = fieldWeight in 2658, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.046875 = fieldNorm(doc=2658)
    0.02402186 = weight(_text_:des in 2658) [ClassicSimilarity], result of:
      0.02402186 = score(doc=2658,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.18358089 = fieldWeight in 2658, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.046875 = fieldNorm(doc=2658)
    0.10259437 = weight(_text_:prinzips in 2658) [ClassicSimilarity], result of:
      0.10259437 = score(doc=2658,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.37939 = fieldWeight in 2658, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.046875 = fieldNorm(doc=2658)
    0.08192125 = product of:
      0.1638425 = sum of:
        0.1638425 = weight(_text_:thesaurus in 2658) [ClassicSimilarity], result of:
          0.1638425 = score(doc=2658,freq=12.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.7503696 = fieldWeight in 2658, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.046875 = fieldNorm(doc=2658)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

The use of thesaurus-enhanced search tools is an the increase. This paper provides an insight into end-users interaction with and perceptions of such tools. In particular the overlap between users' initial query formulation and thesaurus structures is investigated. This investigation involved the performance of genuine search tasks an the CAB Abstracts database by academic users in the domain of veterinary medicine. The perception of these users regarding the nature and usefulness of the terms suggested from the thesaurus during the search interaction is reported. The results indicated that around 80% of terms entered were matched either exactly or partially to thesaurus terms. Users found over 90% of the terms suggested to be close to their search topics and where terms were selected they indicated that around 50% were to support a 'narrowing down' activity. These findings have implications for the design of thesaurus-enhanced interfaces.

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.22779256 = product of:
  0.27335107 = sum of:
    0.015386774 = weight(_text_:und in 5202) [ClassicSimilarity], result of:
      0.015386774 = score(doc=5202,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.14692576 = fieldWeight in 5202, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=5202)
    0.07342099 = weight(_text_:anwendung in 5202) [ClassicSimilarity], result of:
      0.07342099 = score(doc=5202,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.3209477 = fieldWeight in 5202, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.046875 = fieldNorm(doc=5202)
    0.02402186 = weight(_text_:des in 5202) [ClassicSimilarity], result of:
      0.02402186 = score(doc=5202,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.18358089 = fieldWeight in 5202, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.046875 = fieldNorm(doc=5202)
    0.10259437 = weight(_text_:prinzips in 5202) [ClassicSimilarity], result of:
      0.10259437 = score(doc=5202,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.37939 = fieldWeight in 5202, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.046875 = fieldNorm(doc=5202)
    0.057927076 = product of:
      0.11585415 = sum of:
        0.11585415 = weight(_text_:thesaurus in 5202) [ClassicSimilarity], result of:
          0.11585415 = score(doc=5202,freq=6.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.5305915 = fieldWeight in 5202, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.046875 = fieldNorm(doc=5202)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

In this article, we report research on an algorithmic approach to alleviating search uncertainty in a large information space. Grounded on object filtering, automatic indexing, and co-occurence analysis, we performed a large-scale experiment using a parallel supercomputer (SGI Power Challenge) to analyze 400.000+ abstracts in an INSPEC computer engineering collection. Two system-generated thesauri, one based on a combined object filtering and automatic indexing method, and the other based on automatic indexing only, were compaed with the human-generated INSPEC subject thesaurus. Our user evaluation revealed that the system-generated thesauri were better than the INSPEC thesaurus in 'concept recall', but in 'concept precision' the 3 thesauri were comparable. Our analysis also revealed that the terms suggested by the 3 thesauri were complementary and could be used to significantly increase 'variety' in search terms the thereby reduce search uncertainty

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.22779256 = product of:
  0.27335107 = sum of:
    0.015386774 = weight(_text_:und in 1330) [ClassicSimilarity], result of:
      0.015386774 = score(doc=1330,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.14692576 = fieldWeight in 1330, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=1330)
    0.07342099 = weight(_text_:anwendung in 1330) [ClassicSimilarity], result of:
      0.07342099 = score(doc=1330,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.3209477 = fieldWeight in 1330, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.046875 = fieldNorm(doc=1330)
    0.02402186 = weight(_text_:des in 1330) [ClassicSimilarity], result of:
      0.02402186 = score(doc=1330,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.18358089 = fieldWeight in 1330, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.046875 = fieldNorm(doc=1330)
    0.10259437 = weight(_text_:prinzips in 1330) [ClassicSimilarity], result of:
      0.10259437 = score(doc=1330,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.37939 = fieldWeight in 1330, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.046875 = fieldNorm(doc=1330)
    0.057927076 = product of:
      0.11585415 = sum of:
        0.11585415 = weight(_text_:thesaurus in 1330) [ClassicSimilarity], result of:
          0.11585415 = score(doc=1330,freq=6.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.5305915 = fieldWeight in 1330, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.046875 = fieldNorm(doc=1330)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

This paper provides a review of the literature related to the application of domain-specific thesauri in the search and retrieval process. Focusing an studies that adopt a user-centred approach, the review presents a survey of the methodologies and results from empirical studies undertaken an the use of thesauri as sources of term selection for query formulation and expansion during the search process. It summarises the ways in which domain-specific thesauri from different disciplines have been used by various types of users and how these tools aid users in the selection of search terms. The review consists of two main sections: first, studies an thesaurus-aided search term selection; and second, studies dealing with query expansion using thesauri. Both sections are illustrated with case studies that have adopted a user-centred approach.

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.22249827 = product of:
  0.26699793 = sum of:
    0.04623151 = weight(_text_:und in 1404) [ClassicSimilarity], result of:
      0.04623151 = score(doc=1404,freq=26.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.441457 = fieldWeight in 1404, product of:
          5.0990195 = tf(freq=26.0), with freq of:
            26.0 = termFreq=26.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1404)
    0.061184157 = weight(_text_:anwendung in 1404) [ClassicSimilarity], result of:
      0.061184157 = score(doc=1404,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.2674564 = fieldWeight in 1404, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1404)
    0.03467257 = weight(_text_:des in 1404) [ClassicSimilarity], result of:
      0.03467257 = score(doc=1404,freq=6.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.2649762 = fieldWeight in 1404, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1404)
    0.08549531 = weight(_text_:prinzips in 1404) [ClassicSimilarity], result of:
      0.08549531 = score(doc=1404,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.31615835 = fieldWeight in 1404, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1404)
    0.03941438 = product of:
      0.07882876 = sum of:
        0.07882876 = weight(_text_:thesaurus in 1404) [ClassicSimilarity], result of:
          0.07882876 = score(doc=1404,freq=4.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.36102176 = fieldWeight in 1404, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1404)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

Das aktuelle Wissen der Welt im Spiegel einer Weltausstellung: Wie stellt man das dar und wie macht man es Interessierten zugänglich - in der Ausstellung, in Publikationen, im Funk und über das Internet? Was man alles auf einer Weltausstellung an der Schwelle zum dritten Jahrtausend sehen und erfahren kann, sprengt in Fülle und Vielfalt jeden individuell faßbaren Rahmen. Schmitz-Esser zeigt in seinem Buch, wie der Besucher wahlweise in vier Sprachen die Weltausstellung erleben und die Quintessenz davon mitnehmen kann. Ermöglicht wird dies durch das Konzept des virtuellen "Wissens in der Kapsel", das so aufbereitet ist, daß es in allen gängigen medialen Formen und für unterschiedlichste Wege der Aneignung eingesetzt werden kann. Die Lösung ist nicht nur eine Sache der Informatik und Informationstechnologie, sondern vielmehr auch eine Herausforderung an Informationswissenschaft und Computerlinguistik. Das Buch stellt Ziel, Ansatz, Komponenten und Voraussetzungen dafür dar.

Content

Willkommene Anregung schon am Eingang.- Vertiefung des Wissens während der Ausstellung.- Alles für das Wohlbefinden.- Die Systemstruktur und ihre einzelnen Elemente.- Wovon alles ausgeht.- Den Stoff als Topics und Subtopics strukturieren.- Die Nutshells.- Der Proxy-Text.Der Thesaurus.- Gedankenraumreisen.- Und zurück in die reale Welt.- Weitergehende Produkte.- Das EXPO-Infosystem auf einen Blick.- Register.- Literaturverzeichnis.

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.21529064 = product of:
  0.25834876 = sum of:
    0.012822312 = weight(_text_:und in 1520) [ClassicSimilarity], result of:
      0.012822312 = score(doc=1520,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.12243814 = fieldWeight in 1520, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1520)
    0.061184157 = weight(_text_:anwendung in 1520) [ClassicSimilarity], result of:
      0.061184157 = score(doc=1520,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.2674564 = fieldWeight in 1520, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1520)
    0.020018218 = weight(_text_:des in 1520) [ClassicSimilarity], result of:
      0.020018218 = score(doc=1520,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.15298408 = fieldWeight in 1520, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1520)
    0.08549531 = weight(_text_:prinzips in 1520) [ClassicSimilarity], result of:
      0.08549531 = score(doc=1520,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.31615835 = fieldWeight in 1520, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1520)
    0.07882876 = product of:
      0.15765752 = sum of:
        0.15765752 = weight(_text_:thesaurus in 1520) [ClassicSimilarity], result of:
          0.15765752 = score(doc=1520,freq=16.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.7220435 = fieldWeight in 1520, product of:
              4.0 = tf(freq=16.0), with freq of:
                16.0 = termFreq=16.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1520)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

This paper discusses issues concerning the augmentation of thesaurus relationships, in light of new application possibilities for retrieval. We first discuss a case study that explored the retrieval potential of an augmented set of thesaurus relationships by specialising standard relationships into richer subtypes, in particular hierarchical geographical containment and the associative relationship. We then locate this work in a broader context by reviewing various attempts to build taxonomies of thesaurus relationships, and conclude by discussing the feasibility of hierarchically augmenting the core set of thesaurus relationships, particularly the associative relationship. We discuss the possibility of enriching the specification and semantics of Related Term (RT relationships), while maintaining compatibility with traditional thesauri via a limited hierarchical extension of the associative (and hierarchical) relationships. This would be facilitated by distinguishing the type of term from the (sub)type of relationship and explicitly specifying semantic categories for terms following a faceted approach. We first illustrate how hierarchical spatial relationships can be used to provide more flexible retrieval for queries incorporating place names in applications employing online gazetteers and geographical thesauri. We then employ a set of experimental scenarios to investigate key issues affecting use of the associative (RT) thesaurus relationships in semantic distance measures. Previous work has noted the potential of RTs in thesaurus search aids but also the problem of uncontrolled expansion of query term sets. Results presented in this paper suggest the potential for taking account of the hierarchical context of an RT link and specialisations of the RT relationship

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.20739017 = product of:
  0.24886821 = sum of:
    0.015386774 = weight(_text_:und in 5362) [ClassicSimilarity], result of:
      0.015386774 = score(doc=5362,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.14692576 = fieldWeight in 5362, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=5362)
    0.07342099 = weight(_text_:anwendung in 5362) [ClassicSimilarity], result of:
      0.07342099 = score(doc=5362,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.3209477 = fieldWeight in 5362, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.046875 = fieldNorm(doc=5362)
    0.02402186 = weight(_text_:des in 5362) [ClassicSimilarity], result of:
      0.02402186 = score(doc=5362,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.18358089 = fieldWeight in 5362, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.046875 = fieldNorm(doc=5362)
    0.10259437 = weight(_text_:prinzips in 5362) [ClassicSimilarity], result of:
      0.10259437 = score(doc=5362,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.37939 = fieldWeight in 5362, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.046875 = fieldNorm(doc=5362)
    0.03344421 = product of:
      0.06688842 = sum of:
        0.06688842 = weight(_text_:thesaurus in 5362) [ClassicSimilarity], result of:
          0.06688842 = score(doc=5362,freq=2.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.30633712 = fieldWeight in 5362, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.046875 = fieldNorm(doc=5362)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.20648976 = product of:
  0.24778771 = sum of:
    0.012822312 = weight(_text_:und in 4417) [ClassicSimilarity], result of:
      0.012822312 = score(doc=4417,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.12243814 = fieldWeight in 4417, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4417)
    0.061184157 = weight(_text_:anwendung in 4417) [ClassicSimilarity], result of:
      0.061184157 = score(doc=4417,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.2674564 = fieldWeight in 4417, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4417)
    0.020018218 = weight(_text_:des in 4417) [ClassicSimilarity], result of:
      0.020018218 = score(doc=4417,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.15298408 = fieldWeight in 4417, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4417)
    0.08549531 = weight(_text_:prinzips in 4417) [ClassicSimilarity], result of:
      0.08549531 = score(doc=4417,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.31615835 = fieldWeight in 4417, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4417)
    0.06826771 = product of:
      0.13653542 = sum of:
        0.13653542 = weight(_text_:thesaurus in 4417) [ClassicSimilarity], result of:
          0.13653542 = score(doc=4417,freq=12.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.62530804 = fieldWeight in 4417, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4417)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

This study explores how experts and novices in pedagogics expanded queries supported by the ERIC thesaurus, and how this was connected to the search effectiveness in an easy and a difficult search task. The expert group consisted of 15 undergraduates in pedagogy and the novice group of 15 students with no previous studies in this field. Their search logs were recorded and a pre- and post-search interview was conducted. The results show that the number and type of terms selected from the thesaurus for expansion by experts improved search effectiveness, whereas there were no connections between the use of thesaurus and improvement of effectiveness among novices. The effectiveness of expansions varied between the facets of the queries. Thus, a vital condition for benefiting from a thesaurus in query expansion to improve search results is sufficient familiarity with the search topic. The results suggest also that it is not in the first place the number of terms used in expansion, but their type and quality that are crucial for search success.

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.201533 = product of:
  0.2418396 = sum of:
    0.012822312 = weight(_text_:und in 613) [ClassicSimilarity], result of:
      0.012822312 = score(doc=613,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.12243814 = fieldWeight in 613, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0390625 = fieldNorm(doc=613)
    0.061184157 = weight(_text_:anwendung in 613) [ClassicSimilarity], result of:
      0.061184157 = score(doc=613,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.2674564 = fieldWeight in 613, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.0390625 = fieldNorm(doc=613)
    0.020018218 = weight(_text_:des in 613) [ClassicSimilarity], result of:
      0.020018218 = score(doc=613,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.15298408 = fieldWeight in 613, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.0390625 = fieldNorm(doc=613)
    0.08549531 = weight(_text_:prinzips in 613) [ClassicSimilarity], result of:
      0.08549531 = score(doc=613,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.31615835 = fieldWeight in 613, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.0390625 = fieldNorm(doc=613)
    0.062319607 = product of:
      0.12463921 = sum of:
        0.12463921 = weight(_text_:thesaurus in 613) [ClassicSimilarity], result of:
          0.12463921 = score(doc=613,freq=10.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.5708255 = fieldWeight in 613, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.0390625 = fieldNorm(doc=613)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

Purpose - To evaluate the extent to which familiarity with search topics affects the ways in which users select and browse search terms in a thesaurus-enhanced search setting. Design/methodology/approach - An experimental methodology was adopted to study users' search behaviour in an operational information retrieval environment. Findings - Topic familiarity and subject knowledge influence some search and interaction behaviours. Searches involving moderately and very familiar topics were associated with browsing around twice as many thesaurus terms as was the case for unfamiliar topics. Research limitations/implications - Some search behaviours such as thesaurus browsing and term selection could be used as an indication of user levels of topic familiarity. Practical implications - The results of this study provide design implications as to how to develop personalized search interfaces where users with varying levels of familiarity with search topics can carry out searches. Originality/value - This paper establishes the importance of topic familiarity characteristics and the effects of those characteristics on users' interaction with search interfaces enhanced with semantic tools such as thesauri.

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.120977595 = product of:
  0.14517312 = sum of:
    0.0089756185 = weight(_text_:und in 1800) [ClassicSimilarity], result of:
      0.0089756185 = score(doc=1800,freq=2.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.085706696 = fieldWeight in 1800, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.02734375 = fieldNorm(doc=1800)
    0.042828906 = weight(_text_:anwendung in 1800) [ClassicSimilarity], result of:
      0.042828906 = score(doc=1800,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.18721949 = fieldWeight in 1800, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.02734375 = fieldNorm(doc=1800)
    0.014012752 = weight(_text_:des in 1800) [ClassicSimilarity], result of:
      0.014012752 = score(doc=1800,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.10708885 = fieldWeight in 1800, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.02734375 = fieldNorm(doc=1800)
    0.059846714 = weight(_text_:prinzips in 1800) [ClassicSimilarity], result of:
      0.059846714 = score(doc=1800,freq=2.0), product of:
        0.27041927 = queryWeight, product of:
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.04725067 = queryNorm
        0.22131084 = fieldWeight in 1800, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.723078 = idf(docFreq=392, maxDocs=44218)
          0.02734375 = fieldNorm(doc=1800)
    0.019509122 = product of:
      0.039018244 = sum of:
        0.039018244 = weight(_text_:thesaurus in 1800) [ClassicSimilarity], result of:
          0.039018244 = score(doc=1800,freq=2.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.17869665 = fieldWeight in 1800, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.02734375 = fieldNorm(doc=1800)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Theme

Konzeption und Anwendung des Prinzips Thesaurus

0.08107994 = product of:
  0.1216199 = sum of:
    0.025126498 = weight(_text_:und in 6625) [ClassicSimilarity], result of:
      0.025126498 = score(doc=6625,freq=12.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.23992877 = fieldWeight in 6625, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.03125 = fieldNorm(doc=6625)
    0.048947323 = weight(_text_:anwendung in 6625) [ClassicSimilarity], result of:
      0.048947323 = score(doc=6625,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.21396513 = fieldWeight in 6625, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.03125 = fieldNorm(doc=6625)
    0.016014574 = weight(_text_:des in 6625) [ClassicSimilarity], result of:
      0.016014574 = score(doc=6625,freq=2.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.12238726 = fieldWeight in 6625, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.03125 = fieldNorm(doc=6625)
    0.031531505 = product of:
      0.06306301 = sum of:
        0.06306301 = weight(_text_:thesaurus in 6625) [ClassicSimilarity], result of:
          0.06306301 = score(doc=6625,freq=4.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.2888174 = fieldWeight in 6625, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.03125 = fieldNorm(doc=6625)
      0.5 = coord(1/2)
  0.6666667 = coord(4/6)

Abstract

Es wird eine Methode vorgestellt, wie sich Ordnungssysteme für die Suche in textbasierten Datenbeständen verwenden lassen. "Ordnungssystem" wird hier als Oberbegriff für beliebige geordnete Begriffssammlungen verwendet. Dies sind beispielsweise Thesauri, Klassifikationen und formale Systematiken. Weil Thesauri dabei die leistungsfähigsten Ordnungssysteme sind, finden sie eine besondere Berücksichtigung. Der Beitrag ist streng praxisbezogenen und auf die Nutzerschnittstelle konzentriert. Die Basis für die Nutzerschnittstelle bilden Ordnungssysteme, die über eine WWW-Schnittstelle angeboten werden. Je nach Fachgebiet kann der Nutzer ein spezielles Ordnungssystem für die Suche auswählen. Im Unterschied zu klassischen Verfahren werden die Ordnungssysteme nicht zur ausschließlichen Suche in Deskriptorenfeldern, sondern für die Suche in einem Basic Index verwendet. In der Anwendung auf den Basic Index sind die Ordnungssysteme quasi "entkoppelt" von der ursprünglichen Datenbank und den Deskriptorenfeldern, für die das Ordnungssystem entwickelt wurde. Die Inhalte einer Datenbank spielen bei der Wahl der Ordnungssysteme zunächst keine Rolle. Sie machen sich erst bei der Suche in der Anzahl der Treffer bemerkbar: so findet ein rechtswissenschaftlicher Thesaurus natürlicherweise in einer Medizin-Datenbank weniger relevante Dokumente als in einer Rechts-Datenbank, weil das im Rechts-Thesaurus abgebildete Begriffsgut eher in einer Rechts-Datenbank zu finden ist. Das Verfahren ist modular aufgebaut und sieht in der Konzeption nachgeordnete semantische Retrievalverfahren vor, die zu einer Verbesserung von Retrievaleffektivität und -effizienz führen werden. So werden aus einer Ergebnismenge, die ausschließlich durch exakten Zeichenkettenabgleich gefunden wurde, in einem nachfolgenden Schritt durch eine semantische Analyse diejenigen Dokumente herausgefiltert, die für die Suchfrage relevant sind. Die WWW-Nutzerschnittstelle und die Verwendung bereits bestehender Ordnungssysteme führen zu einer Minimierung des Arbeitsaufwands auf Nutzerseite. Die Kosten für eine Suche lassen sich sowohl auf der Input-Seite verringern, indem eine aufwendige "manuelle" Indexierung entfällt, als auch auf der Output-Seite, indem den Nutzern leicht bedienbare Suchoptionen zur Verfügung gestellt werden

0.08092279 = product of:
  0.12138418 = sum of:
    0.036985204 = weight(_text_:und in 3447) [ClassicSimilarity], result of:
      0.036985204 = score(doc=3447,freq=26.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.3531656 = fieldWeight in 3447, product of:
          5.0990195 = tf(freq=26.0), with freq of:
            26.0 = termFreq=26.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.03125 = fieldNorm(doc=3447)
    0.048947323 = weight(_text_:anwendung in 3447) [ClassicSimilarity], result of:
      0.048947323 = score(doc=3447,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.21396513 = fieldWeight in 3447, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.03125 = fieldNorm(doc=3447)
    0.022648027 = weight(_text_:des in 3447) [ClassicSimilarity], result of:
      0.022648027 = score(doc=3447,freq=4.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.17308173 = fieldWeight in 3447, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.03125 = fieldNorm(doc=3447)
    0.012803626 = product of:
      0.025607252 = sum of:
        0.025607252 = weight(_text_:22 in 3447) [ClassicSimilarity], result of:
          0.025607252 = score(doc=3447,freq=2.0), product of:
            0.16546379 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04725067 = queryNorm
            0.15476047 = fieldWeight in 3447, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03125 = fieldNorm(doc=3447)
      0.5 = coord(1/2)
  0.6666667 = coord(4/6)

Abstract

Yewno findet Themen und Konzepte (Suchbegriffe und ihre Abstraktionen) in englischsprachigen digitalen Texten mit Methoden des maschinellen Lernens und der künstlichen Intelligenz. Als Ergebnis Ihrer Suchanfrage werden die Konzepte, die Ihre Anfrage betreffen, in vielfältigen sachlichen Beziehungen als graphisches Netzwerk präsentiert, über das Sie einfach navigieren können. Auch versteckte thematische Beziehungen werden hier sichtbar gemacht, die vom Bekannten zu neuen Entdeckungen führen. Im Rahmen einer Pilotphase können Sie über einen interdisziplinären Ausschnitt aus aktuellen englischsprachigen Fachzeitschriften verschiedenster Fachgebiete recherchieren. Die zu den Themen gehörigen Artikel werden in Ausschnitten unmittelbar angezeigt und können in den meisten Fällen direkt als Volltext aufgerufen werden.
"Die Bayerische Staatsbibliothek testet den semantischen "Discovery Service" Yewno als zusätzliche thematische Suchmaschine für digitale Volltexte. Der Service ist unter folgendem Link erreichbar: https://www.bsb-muenchen.de/recherche-und-service/suchen-und-finden/yewno/. Das Identifizieren von Themen, um die es in einem Text geht, basiert bei Yewno alleine auf Methoden der künstlichen Intelligenz und des maschinellen Lernens. Dabei werden sie nicht - wie bei klassischen Katalogsystemen - einem Text als Ganzem zugeordnet, sondern der jeweiligen Textstelle. Die Eingabe eines Suchwortes bzw. Themas, bei Yewno "Konzept" genannt, führt umgehend zu einer grafischen Darstellung eines semantischen Netzwerks relevanter Konzepte und ihrer inhaltlichen Zusammenhänge. So ist ein Navigieren über thematische Beziehungen bis hin zu den Fundstellen im Text möglich, die dann in sogenannten Snippets angezeigt werden. In der Test-Anwendung der Bayerischen Staatsbibliothek durchsucht Yewno aktuell 40 Millionen englischsprachige Dokumente aus Publikationen namhafter Wissenschaftsverlage wie Cambridge University Press, Oxford University Press, Wiley, Sage und Springer, sowie Dokumente, die im Open Access verfügbar sind. Nach der dreimonatigen Testphase werden zunächst die Rückmeldungen der Nutzer ausgewertet. Ob und wann dann der Schritt von der klassischen Suchmaschine zum semantischen "Discovery Service" kommt und welche Bedeutung Anwendungen wie Yewno in diesem Zusammenhang einnehmen werden, ist heute noch nicht abzusehen. Die Software Yewno wurde vom gleichnamigen Startup in Zusammenarbeit mit der Stanford University entwickelt, mit der auch die Bayerische Staatsbibliothek eng kooperiert. [Inetbib-Posting vom 22.02.2017].

Date

22. 2.2017 10:16:49

Source

https://www.bsb-muenchen.de/recherche-und-service/suchen-und-finden/yewno/

0.07837141 = product of:
  0.15674283 = sum of:
    0.026650677 = weight(_text_:und in 1639) [ClassicSimilarity], result of:
      0.026650677 = score(doc=1639,freq=6.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.2544829 = fieldWeight in 1639, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=1639)
    0.04160709 = weight(_text_:des in 1639) [ClassicSimilarity], result of:
      0.04160709 = score(doc=1639,freq=6.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.31797147 = fieldWeight in 1639, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.046875 = fieldNorm(doc=1639)
    0.08848506 = product of:
      0.17697012 = sum of:
        0.17697012 = weight(_text_:thesaurus in 1639) [ClassicSimilarity], result of:
          0.17697012 = score(doc=1639,freq=14.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.81049186 = fieldWeight in 1639, product of:
              3.7416575 = tf(freq=14.0), with freq of:
                14.0 = termFreq=14.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.046875 = fieldNorm(doc=1639)
      0.5 = coord(1/2)
  0.5 = coord(3/6)

Abstract

Das System ALEPH 500 (Version 14.2) bietet den Benutzern mit der Weiterentwicklung des "Multilingualen Thesaurus" verfeinerte Recherchefunktionen an, z.B. - Erhöhung der Treffsicherheit - Ausschluss von nicht zutreffenden Suchergebnissen - Aufspüren aller für die Suche relevanter Titel - Sprachunabhängige Suche - Beziehungen zwischen Begriffen. Im ALEPH 500-Web OPAC wird der Thesaurus in zwei Fenstern angezeigt. Links ist der Thesaurus-Baum mit Hierarchien und Begriffsbeziehungen abgebildet. Parallel dazu werden rechts die Informationen zum ausgewählten Deskriptor dargestellt. Von diesem Fenster aus sind weitere thesaurusbezogene Funktionen ausführbar. Der Thesaurus ist direkt mit dem Titelkatalog verknüpft. Somit kann sich der Benutzer vom gewählten Deskriptor ausgehend sofort die vorhandenen Titel im OPAC anzeigen lassen. Sowohl die Einzelrecherche über einen Deskriptor als auch die Top DownRecherche über einen Thesaurus-Baumzweig werden im Suchverlauf des Titelkatalogs mitgeführt. Die Recherche kann mit den bekannten Funktionen in ALEPH 500 erweitert, eingeschränkt, modifiziert oder als SDI-Profil abgelegt werden. Erfassung und Pflege des Thesaurusvokabublars erfolgen im Katalogisierungsmodul unter Beachtung allgemein gültiger Regeln mit Hilfe maßgeschneiderter Schablonen, die modifizierbar sind. Durch entsprechende Feldbelegungen können die vielfältigen Beziehungen eines Deskriptors abgebildet sowie Sprachvarianten hinterlegt werden. Hintergrundverknüpfungen sorgen dafür, dass sich Änderungen im Thesaurus sofort und direkt auf die bibliographischen Daten auswirken.

0.07837141 = product of:
  0.15674283 = sum of:
    0.026650677 = weight(_text_:und in 1640) [ClassicSimilarity], result of:
      0.026650677 = score(doc=1640,freq=6.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.2544829 = fieldWeight in 1640, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=1640)
    0.04160709 = weight(_text_:des in 1640) [ClassicSimilarity], result of:
      0.04160709 = score(doc=1640,freq=6.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.31797147 = fieldWeight in 1640, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.046875 = fieldNorm(doc=1640)
    0.08848506 = product of:
      0.17697012 = sum of:
        0.17697012 = weight(_text_:thesaurus in 1640) [ClassicSimilarity], result of:
          0.17697012 = score(doc=1640,freq=14.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.81049186 = fieldWeight in 1640, product of:
              3.7416575 = tf(freq=14.0), with freq of:
                14.0 = termFreq=14.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.046875 = fieldNorm(doc=1640)
      0.5 = coord(1/2)
  0.5 = coord(3/6)

Abstract

Das System ALEPH 500 (Version 14.2) bietet den Benutzern mit der Weiterentwicklung des "Multilingualen Thesaurus" verfeinerte Recherchefunktionen an, z.B. - Erhöhung der Treffsicherheit - Ausschluss von nicht zutreffenden Suchergebnissen - Aufspüren aller für die Suche relevanter Titel - Sprachunabhängige Suche - Beziehungen zwischen Begriffen. Im ALEPH 500-Web OPAC wird der Thesaurus in zwei Fenstern angezeigt. Links ist der Thesaurus-Baum mit Hierarchien und Begriffsbeziehungen abgebildet. Parallel dazu werden rechts die Informationen zum ausgewählten Deskriptor dargestellt. Von diesem Fenster aus sind weitere thesaurusbezogene Funktionen ausführbar. Der Thesaurus ist direkt mit dem Titelkatalog verknüpft. Somit kann sich der Benutzer vom gewählten Deskriptor ausgehend sofort die vorhandenen Titel im OPAC anzeigen lassen. Sowohl die Einzelrecherche über einen Deskriptor als auch die Top DownRecherche über einen Thesaurus-Baumzweig werden im Suchverlauf des Titelkatalogs mitgeführt. Die Recherche kann mit den bekannten Funktionen in ALEPH 500 erweitert, eingeschränkt, modifiziert oder als SDI-Profil abgelegt werden. Erfassung und Pflege des Thesaurusvokabublars erfolgen im Katalogisierungsmodul unter Beachtung allgemein gültiger Regeln mit Hilfe maßgeschneiderter Schablonen, die modifizierbar sind. Durch entsprechende Feldbelegungen können die vielfältigen Beziehungen eines Deskriptors abgebildet sowie Sprachvarianten hinterlegt werden. Hintergrundverknüpfungen sorgen dafür, dass sich Änderungen im Thesaurus sofort und direkt auf die bibliographischen Daten auswirken.

0.06757262 = product of:
  0.13514525 = sum of:
    0.033924647 = weight(_text_:und in 2380) [ClassicSimilarity], result of:
      0.033924647 = score(doc=2380,freq=14.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.32394084 = fieldWeight in 2380, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2380)
    0.061184157 = weight(_text_:anwendung in 2380) [ClassicSimilarity], result of:
      0.061184157 = score(doc=2380,freq=2.0), product of:
        0.22876309 = queryWeight, product of:
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.04725067 = queryNorm
        0.2674564 = fieldWeight in 2380, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8414783 = idf(docFreq=948, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2380)
    0.040036436 = weight(_text_:des in 2380) [ClassicSimilarity], result of:
      0.040036436 = score(doc=2380,freq=8.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.30596817 = fieldWeight in 2380, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2380)
  0.5 = coord(3/6)

Abstract

Das Internet birgt schier endlose Informationen. Ein zentrales Problem besteht heutzutage darin diese auch zugänglich zu machen. Es ist ein fundamentales Domänenwissen erforderlich, um in einer Volltextsuche die korrekten Suchanfragen zu formulieren. Das ist jedoch oftmals nicht vorhanden, so dass viel Zeit aufgewandt werden muss, um einen Überblick des behandelten Themas zu erhalten. In solchen Situationen findet sich ein Nutzer in einem explorativen Suchvorgang, in dem er sich schrittweise an ein Thema heranarbeiten muss. Für die Organisation von Daten werden mittlerweile ganz selbstverständlich Verfahren des Machine Learnings verwendet. In den meisten Fällen bleiben sie allerdings für den Anwender unsichtbar. Die interaktive Verwendung in explorativen Suchprozessen könnte die menschliche Urteilskraft enger mit der maschinellen Verarbeitung großer Datenmengen verbinden. Topic Models sind ebensolche Verfahren. Sie finden in einem Textkorpus verborgene Themen, die sich relativ gut von Menschen interpretieren lassen und sind daher vielversprechend für die Anwendung in explorativen Suchprozessen. Nutzer können damit beim Verstehen unbekannter Quellen unterstützt werden. Bei der Betrachtung entsprechender Forschungsarbeiten fiel auf, dass Topic Models vorwiegend zur Erzeugung statischer Visualisierungen verwendet werden. Das Sensemaking ist ein wesentlicher Bestandteil der explorativen Suche und wird dennoch nur in sehr geringem Umfang genutzt, um algorithmische Neuerungen zu begründen und in einen umfassenden Kontext zu setzen. Daraus leitet sich die Vermutung ab, dass die Verwendung von Modellen des Sensemakings und die nutzerzentrierte Konzeption von explorativen Suchen, neue Funktionen für die Interaktion mit Topic Models hervorbringen und einen Kontext für entsprechende Forschungsarbeiten bieten können.

Footnote

Masterthesis zur Erlangung des akademischen Grades Master of Science (M.Sc.) vorgelegt an der Fachhochschule Köln / Fakultät für Informatik und Ingenieurswissenschaften im Studiengang Medieninformatik.

Imprint

Gummersbach : Fakultät für Informatik und Ingenieurswissenschaften

0.05636097 = product of:
  0.11272194 = sum of:
    0.02867156 = weight(_text_:und in 5962) [ClassicSimilarity], result of:
      0.02867156 = score(doc=5962,freq=10.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.27378 = fieldWeight in 5962, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5962)
    0.028310036 = weight(_text_:des in 5962) [ClassicSimilarity], result of:
      0.028310036 = score(doc=5962,freq=4.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.21635216 = fieldWeight in 5962, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.0390625 = fieldNorm(doc=5962)
    0.055740345 = product of:
      0.11148069 = sum of:
        0.11148069 = weight(_text_:thesaurus in 5962) [ClassicSimilarity], result of:
          0.11148069 = score(doc=5962,freq=8.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.5105618 = fieldWeight in 5962, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5962)
      0.5 = coord(1/2)
  0.5 = coord(3/6)

Abstract

Seit 3. Juli 2006 stellt das ZPID eine verbesserte Suchoberfläche für die Recherche in der bibliographischen Psychologie-Datenbank PSYNDEX zur Verfügung. Hauptmerkmal der neuen Version 1.1 des 'ZPID-Retrieval für PSYNDEX' ist die Einbindung von 'PSYNDEX Terms', dem kontrollierten Wortschatz der psychologischen Fachsprache. PSYNDEX Terms basiert auf dem 'Thesaurus of Psychological Index Terms' der American Psychological Association (APA) und enthält im Moment über 5.400 Deskriptoren. Zu jedem Deskriptor werden ggf. Oberbegriffe, Unterbegriffe und verwandte Begriffe angezeigt. Wer die Suchoberfläche nutzt, kann entweder im Thesaurus blättern oder gezielt nach Thesaurusbegriffen suchen. Kommt der eigene frei gewählte Suchbegriff nicht im Thesaurus vor, macht das System selbsttätig Vorschläge für passende Thesaurusbegriffe. DerThesaurus ist komplett zweisprachig (deutsch/englisch) implementiert, sodass er auch als Übersetzungshilfe dient. Weitere Verbesserungen der Suchoberfläche betreffen die Darstellbarkeit in unterschiedlichen Web-Browsern mit dem Ziel der Barrierefreiheit, die Erweiterung der OnlineHilfe mit Beispielen für erfolgreiche Suchstrategien, die Möglichkeit, zu speziellen Themen vertiefte Informationen abzurufen (den Anfang machen psychologische Behandlungsprogramme) und die Bereitstellung eines Export-Filters für EndNote. Zielgruppe des ZPID-Retrieval sind Einzelpersonen, die keinen institutionellen PSYNDEX-Zugang, z.B. am Campus einer Universität, nutzen können. Sie können das kostenpflichtige Retrieval direkt online erwerben und werden binnen weniger Minuten freigeschaltet. Kunden mit existierendem Vertrag kommen automatisch in den Genuss der verbesserten Suchoberfläche.

Source

Information - Wissenschaft und Praxis. 57(2006) H.5, S.244

0.056021422 = product of:
  0.112042844 = sum of:
    0.030773548 = weight(_text_:und in 2302) [ClassicSimilarity], result of:
      0.030773548 = score(doc=2302,freq=8.0), product of:
        0.104724824 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.04725067 = queryNorm
        0.29385152 = fieldWeight in 2302, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=2302)
    0.03397204 = weight(_text_:des in 2302) [ClassicSimilarity], result of:
      0.03397204 = score(doc=2302,freq=4.0), product of:
        0.13085164 = queryWeight, product of:
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.04725067 = queryNorm
        0.25962257 = fieldWeight in 2302, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.7693076 = idf(docFreq=7536, maxDocs=44218)
          0.046875 = fieldNorm(doc=2302)
    0.047297254 = product of:
      0.09459451 = sum of:
        0.09459451 = weight(_text_:thesaurus in 2302) [ClassicSimilarity], result of:
          0.09459451 = score(doc=2302,freq=4.0), product of:
            0.21834905 = queryWeight, product of:
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.04725067 = queryNorm
            0.4332261 = fieldWeight in 2302, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6210785 = idf(docFreq=1182, maxDocs=44218)
              0.046875 = fieldNorm(doc=2302)
      0.5 = coord(1/2)
  0.5 = coord(3/6)

Abstract

"Thesaurus linguae latinae" - so heißt eine der frühesten Wort-Sammlungen. Seit Alters her beschäftigen sich Menschen mit der qualifizierten Aufbereitung von Information. Noch älter ist sogar das Konzept der Ontologie (wörtlich: die "Lehre vom Sein"), die sich als Disziplin der Philosophie bereits seit Aristoteles (384-322 v. Chr.) mit einer objektivistischen Beschreibung der Wirklichkeit beschäftigt. Ontologien - als Disziplin des modernen Wissensmanagements-sind eine Methode, in möglichst kompakter Form, d.h. unter Verwendung von Konzepten in verschiedenen Meta-Ebenen die reale Welt zu beschreiben. Thesaurus und Ontologie stellen zwei Konzepte dar, die auch heute noch in der Wissenschaft - und in jüngster Zeit mit zunehmender Bedeutung auch in der Wirtschaft - im Bereich des Informationsund Wissensmanagements zum Einsatz kommen. Beide spannen gewissermaßen den konzeptionellen Bogen, an dem sich ein pragmatisches Wissensmanagement heutzutage ausrichtet und sich in Form sogenannter semantischer Netze - auch Wissensnetze genannt - wiederfindet.

Source

Information - Wissenschaft und Praxis. 55(2004) H.3, S.133-138