Search (27 results, page 1 of 2)

0.052551936 = product of:
  0.10510387 = sum of:
    0.10510387 = product of:
      0.1576558 = sum of:
        0.08467 = weight(_text_:i in 5629) [ClassicSimilarity], result of:
          0.08467 = score(doc=5629,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.50006545 = fieldWeight in 5629, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.09375 = fieldNorm(doc=5629)
        0.07298581 = weight(_text_:22 in 5629) [ClassicSimilarity], result of:
          0.07298581 = score(doc=5629,freq=2.0), product of:
            0.15720168 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044891298 = queryNorm
            0.46428138 = fieldWeight in 5629, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=5629)
      0.6666667 = coord(2/3)
  0.5 = coord(1/2)

Content

Vgl.: https://www.b-i-t-online.de/heft/2019-02-index.php.

Source

B.I.T.online. 22(2019) H.2, S.163-166

0.026275968 = product of:
  0.052551936 = sum of:
    0.052551936 = product of:
      0.0788279 = sum of:
        0.042335 = weight(_text_:i in 5628) [ClassicSimilarity], result of:
          0.042335 = score(doc=5628,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.25003272 = fieldWeight in 5628, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.046875 = fieldNorm(doc=5628)
        0.036492907 = weight(_text_:22 in 5628) [ClassicSimilarity], result of:
          0.036492907 = score(doc=5628,freq=2.0), product of:
            0.15720168 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044891298 = queryNorm
            0.23214069 = fieldWeight in 5628, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=5628)
      0.6666667 = coord(2/3)
  0.5 = coord(1/2)

Content

Vgl.: https://www.b-i-t-online.de/heft/2019-06-index.php.

Source

B.I.T.online. 22(2019) H.6, S.465-469

0.019237336 = product of:
  0.03847467 = sum of:
    0.03847467 = product of:
      0.057712007 = sum of:
        0.033383403 = weight(_text_:c in 1441) [ClassicSimilarity], result of:
          0.033383403 = score(doc=1441,freq=4.0), product of:
            0.15484828 = queryWeight, product of:
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.044891298 = queryNorm
            0.21558782 = fieldWeight in 1441, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.03125 = fieldNorm(doc=1441)
        0.024328604 = weight(_text_:22 in 1441) [ClassicSimilarity], result of:
          0.024328604 = score(doc=1441,freq=2.0), product of:
            0.15720168 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044891298 = queryNorm
            0.15476047 = fieldWeight in 1441, 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=1441)
      0.6666667 = coord(2/3)
  0.5 = coord(1/2)

Abstract

This paper presents a research on syntactic structures known as noun phrases (NP) being applied to increase the effectiveness and efficiency of the mechanisms for the document's classification. Our hypothesis is the fact that the NP can be used instead of single words as a semantic aggregator to reduce the number of words that will be used for the classification system without losing its semantic coverage, increasing its efficiency. The experiment divided the documents classification process in three phases: a) NP preprocessing b) system training; and c) classification experiments. In the first step, a corpus of digitalized texts was submitted to a natural language processing platform1 in which the part-of-speech tagging was done, and them PERL scripts pertaining to the PALAVRAS package were used to extract the Noun Phrases. The preprocessing also involved the tasks of a) removing NP low meaning pre-modifiers, as quantifiers; b) identification of synonyms and corresponding substitution for common hyperonyms; and c) stemming of the relevant words contained in the NP, for similitude checking with other NPs. The first tests with the resulting documents have demonstrated its effectiveness. We have compared the structural similarity of the documents before and after the whole pre-processing steps of phase one. The texts maintained the consistency with the original and have kept the readability. The second phase involves submitting the modified documents to a SVM algorithm to identify clusters and classify the documents. The classification rules are to be established using a machine learning approach. Finally, tests will be conducted to check the effectiveness of the whole process.

Source

Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik

0.011759723 = product of:
  0.023519445 = sum of:
    0.023519445 = product of:
      0.07055833 = sum of:
        0.07055833 = weight(_text_:i in 5625) [ClassicSimilarity], result of:
          0.07055833 = score(doc=5625,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.41672117 = fieldWeight in 5625, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.078125 = fieldNorm(doc=5625)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Content

Vgl.: https://www.b-i-t-online.de/heft/2018-01-interview-moedden.pdf.

0.010136919 = product of:
  0.020273838 = sum of:
    0.020273838 = product of:
      0.060821515 = sum of:
        0.060821515 = weight(_text_:22 in 2759) [ClassicSimilarity], result of:
          0.060821515 = score(doc=2759,freq=2.0), product of:
            0.15720168 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044891298 = queryNorm
            0.38690117 = fieldWeight in 2759, 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=2759)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Date

1. 2.2016 18:25:22

0.009736827 = product of:
  0.019473653 = sum of:
    0.019473653 = product of:
      0.058420956 = sum of:
        0.058420956 = weight(_text_:c in 2091) [ClassicSimilarity], result of:
          0.058420956 = score(doc=2091,freq=4.0), product of:
            0.15484828 = queryWeight, product of:
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.044891298 = queryNorm
            0.3772787 = fieldWeight in 2091, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2091)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Source

Re:inventing information science in the networked society: Proceedings of the 14th International Symposium on Information Science, Zadar/Croatia, 19th-21st May 2015. Eds.: F. Pehar, C. Schloegl u. C. Wolff

0.009407777 = product of:
  0.018815555 = sum of:
    0.018815555 = product of:
      0.056446664 = sum of:
        0.056446664 = weight(_text_:i in 4913) [ClassicSimilarity], result of:
          0.056446664 = score(doc=4913,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.33337694 = fieldWeight in 4913, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.0625 = fieldNorm(doc=4913)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

0.008231806 = product of:
  0.016463611 = sum of:
    0.016463611 = product of:
      0.049390834 = sum of:
        0.049390834 = weight(_text_:i in 2933) [ClassicSimilarity], result of:
          0.049390834 = score(doc=2933,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.29170483 = fieldWeight in 2933, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2933)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

0.007868543 = product of:
  0.015737087 = sum of:
    0.015737087 = product of:
      0.04721126 = sum of:
        0.04721126 = weight(_text_:c in 1712) [ClassicSimilarity], result of:
          0.04721126 = score(doc=1712,freq=2.0), product of:
            0.15484828 = queryWeight, product of:
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.044891298 = queryNorm
            0.3048872 = fieldWeight in 1712, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.0625 = fieldNorm(doc=1712)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

0.007868543 = product of:
  0.015737087 = sum of:
    0.015737087 = product of:
      0.04721126 = sum of:
        0.04721126 = weight(_text_:c in 1714) [ClassicSimilarity], result of:
          0.04721126 = score(doc=1714,freq=2.0), product of:
            0.15484828 = queryWeight, product of:
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.044891298 = queryNorm
            0.3048872 = fieldWeight in 1714, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.0625 = fieldNorm(doc=1714)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

0.007095843 = product of:
  0.014191686 = sum of:
    0.014191686 = product of:
      0.042575058 = sum of:
        0.042575058 = weight(_text_:22 in 5195) [ClassicSimilarity], result of:
          0.042575058 = score(doc=5195,freq=2.0), product of:
            0.15720168 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044891298 = queryNorm
            0.2708308 = fieldWeight in 5195, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=5195)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Abstract

Große Aufmerksamkeit richtet sich im Moment auf das Potential von automatisierten Methoden in der Sacherschließung und deren Interaktionsmöglichkeiten mit intellektuellen Methoden. In diesem Kontext befasst sich der vorliegende Beitrag mit den folgenden Fragen: Was sind die Anforderungen an bibliothekarische Metadaten aus Sicht der Wissenschaft? Was wird gebraucht, um den Informationsbedarf der Fachcommunities zu bedienen? Und was bedeutet das entsprechend für die Automatisierung der Metadatenerstellung und -pflege? Dieser Beitrag fasst die von der Autorin eingenommene Position in einem Impulsvortrag und der Podiumsdiskussion beim Workshop der FAG "Erschließung und Informationsvermittlung" des GBV zusammen. Der Workshop fand im Rahmen der 22. Verbundkonferenz des GBV statt.

0.007095843 = product of:
  0.014191686 = sum of:
    0.014191686 = product of:
      0.042575058 = sum of:
        0.042575058 = weight(_text_:22 in 5344) [ClassicSimilarity], result of:
          0.042575058 = score(doc=5344,freq=2.0), product of:
            0.15720168 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.044891298 = queryNorm
            0.2708308 = fieldWeight in 5344, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=5344)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Abstract

Spätestens seit dem Deutschen Bibliothekartag 2018 hat sich die Diskussion zu den automatischen Verfahren der Inhaltserschließung der Deutschen Nationalbibliothek von einer politisch geführten Diskussion in eine Qualitätsdiskussion verwandelt. Der folgende Beitrag beschäftigt sich mit Fragen der Qualität von Inhaltserschließung in digitalen Zeiten, wo heterogene Erzeugnisse unterschiedlicher Verfahren aufeinandertreffen und versucht, wichtige Anforderungen an Qualität zu definieren. Dieser Tagungsbeitrag fasst die vom Autor als Impulse vorgetragenen Ideen beim Workshop der FAG "Erschließung und Informationsvermittlung" des GBV am 29. August 2018 in Kiel zusammen. Der Workshop fand im Rahmen der 22. Verbundkonferenz des GBV statt.

0.0070558335 = product of:
  0.014111667 = sum of:
    0.014111667 = product of:
      0.042335 = sum of:
        0.042335 = weight(_text_:i in 903) [ClassicSimilarity], result of:
          0.042335 = score(doc=903,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.25003272 = fieldWeight in 903, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.046875 = fieldNorm(doc=903)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Imprint

Berlin : Humboldt-Universität zu Berlin, Philosophische Fakultät I, Institut für Bibliotheks- und Informationswissenschaft

0.0070558335 = product of:
  0.014111667 = sum of:
    0.014111667 = product of:
      0.042335 = sum of:
        0.042335 = weight(_text_:i in 3187) [ClassicSimilarity], result of:
          0.042335 = score(doc=3187,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.25003272 = fieldWeight in 3187, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.046875 = fieldNorm(doc=3187)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Abstract

The quality of stemming algorithms is typically measured in two different ways: (i) how accurately they map the variant forms of a word to the same stem; or (ii) how much improvement they bring to Information Retrieval systems. In this article, we evaluate various stemming algorithms, in four languages, in terms of accuracy and in terms of their aid to Information Retrieval. The aim is to assess whether the most accurate stemmers are also the ones that bring the biggest gain in Information Retrieval. Experiments in English, French, Portuguese, and Spanish show that this is not always the case, as stemmers with higher error rates yield better retrieval quality. As a byproduct, we also identified the most accurate stemmers and the best for Information Retrieval purposes.

0.0070558335 = product of:
  0.014111667 = sum of:
    0.014111667 = product of:
      0.042335 = sum of:
        0.042335 = weight(_text_:i in 3622) [ClassicSimilarity], result of:
          0.042335 = score(doc=3622,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.25003272 = fieldWeight in 3622, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.046875 = fieldNorm(doc=3622)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

0.0070558335 = product of:
  0.014111667 = sum of:
    0.014111667 = product of:
      0.042335 = sum of:
        0.042335 = weight(_text_:i in 5408) [ClassicSimilarity], result of:
          0.042335 = score(doc=5408,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.25003272 = fieldWeight in 5408, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.046875 = fieldNorm(doc=5408)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

0.006884975 = product of:
  0.01376995 = sum of:
    0.01376995 = product of:
      0.04130985 = sum of:
        0.04130985 = weight(_text_:c in 3495) [ClassicSimilarity], result of:
          0.04130985 = score(doc=3495,freq=2.0), product of:
            0.15484828 = queryWeight, product of:
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.044891298 = queryNorm
            0.2667763 = fieldWeight in 3495, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3495)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

0.0059014075 = product of:
  0.011802815 = sum of:
    0.011802815 = product of:
      0.035408445 = sum of:
        0.035408445 = weight(_text_:c in 3422) [ClassicSimilarity], result of:
          0.035408445 = score(doc=3422,freq=2.0), product of:
            0.15484828 = queryWeight, product of:
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.044891298 = queryNorm
            0.22866541 = fieldWeight in 3422, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.046875 = fieldNorm(doc=3422)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Abstract

This article presents an unsupervised algorithm for semantic annotation of morphological descriptions of whole organisms. The algorithm is able to annotate plain text descriptions with high accuracy at the clause level by exploiting the corpus itself. In other words, the algorithm does not need lexicons, syntactic parsers, training examples, or annotation templates. The evaluation on two real-life description collections in botany and paleontology shows that the algorithm has the following desirable features: (a) reduces/eliminates manual labor required to compile dictionaries and prepare source documents; (b) improves annotation coverage: the algorithm annotates what appears in documents and is not limited by predefined and often incomplete templates; (c) learns clean and reusable concepts: the algorithm learns organ names and character states that can be used to construct reusable domain lexicons, as opposed to collection-dependent patterns whose applicability is often limited to a particular collection; (d) insensitive to collection size; and (e) runs in linear time with respect to the number of clauses to be annotated.

0.0058798613 = product of:
  0.011759723 = sum of:
    0.011759723 = product of:
      0.035279166 = sum of:
        0.035279166 = weight(_text_:i in 3232) [ClassicSimilarity], result of:
          0.035279166 = score(doc=3232,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.20836058 = fieldWeight in 3232, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3232)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

0.0058798613 = product of:
  0.011759723 = sum of:
    0.011759723 = product of:
      0.035279166 = sum of:
        0.035279166 = weight(_text_:i in 3667) [ClassicSimilarity], result of:
          0.035279166 = score(doc=3667,freq=2.0), product of:
            0.16931784 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.044891298 = queryNorm
            0.20836058 = fieldWeight in 3667, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3667)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Abstract

Descriptive metadata play a key role in finding relevant search results in large amounts of unstructured data. However, current scientific audiovisual media are provided with little metadata, which makes them hard to find, let alone individual sequences. In this paper, the TIB / AV-Portal is presented as a use case where methods concerning the automatic generation of metadata, a semantic search and cross-lingual retrieval (German/English) have already been applied. These methods result in a better discoverability of the scientific audiovisual media hosted in the portal. Text, speech, and image content of the video are automatically indexed by specialised GND (Gemeinsame Normdatei) subject headings. A semantic search is established based on properties of the GND ontology. The cross-lingual retrieval uses English 'translations' that were derived by an ontology mapping (DBpedia i. a.). Further ways of increasing the discoverability and reuse of the metadata are publishing them as Linked Open Data and interlinking them with other data sets.