Search (3 results, page 1 of 1)

0.022294924 = product of:
  0.044589847 = sum of:
    0.042709544 = weight(_text_:von in 567) [ClassicSimilarity], result of:
      0.042709544 = score(doc=567,freq=4.0), product of:
        0.12806706 = queryWeight, product of:
          2.6679487 = idf(docFreq=8340, maxDocs=44218)
          0.04800207 = queryNorm
        0.3334936 = fieldWeight in 567, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.6679487 = idf(docFreq=8340, maxDocs=44218)
          0.0625 = fieldNorm(doc=567)
    0.0018803024 = product of:
      0.005640907 = sum of:
        0.005640907 = weight(_text_:a in 567) [ClassicSimilarity], result of:
          0.005640907 = score(doc=567,freq=2.0), product of:
            0.055348642 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.04800207 = queryNorm
            0.10191591 = fieldWeight in 567, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.0625 = fieldNorm(doc=567)
      0.33333334 = coord(1/3)
  0.5 = coord(2/4)

Abstract

Die Bibliothek als Leuchtturm im Datenmeer? Informationskompetenz wird als eine der Stärken von Bibliothekaren gesehen. Natürlich erwarten unsere Benutzer diese Kompetenz nicht nur im Bereich der gedruckten Literatur, sondern auch bei elektronischen Informationsquellen.

Type

a

0.016040254 = product of:
  0.03208051 = sum of:
    0.030200208 = weight(_text_:von in 3582) [ClassicSimilarity], result of:
      0.030200208 = score(doc=3582,freq=2.0), product of:
        0.12806706 = queryWeight, product of:
          2.6679487 = idf(docFreq=8340, maxDocs=44218)
          0.04800207 = queryNorm
        0.23581557 = fieldWeight in 3582, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.6679487 = idf(docFreq=8340, maxDocs=44218)
          0.0625 = fieldNorm(doc=3582)
    0.0018803024 = product of:
      0.005640907 = sum of:
        0.005640907 = weight(_text_:a in 3582) [ClassicSimilarity], result of:
          0.005640907 = score(doc=3582,freq=2.0), product of:
            0.055348642 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.04800207 = queryNorm
            0.10191591 = fieldWeight in 3582, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.0625 = fieldNorm(doc=3582)
      0.33333334 = coord(1/3)
  0.5 = coord(2/4)

Abstract

Als Linklisten "der dritten Generation" werden in diesem Artikel Systeme zur kooperativen Verwaltung von Internetlinks und Datenbankbeschreibungen bezeichnet. Mit DigiLink wird ein Vertreter dieses Typs näher vorgestellt. DigiLink ist eine Eigenentwicklung des hbz, die sich besonders durch hohe Anpassungsfähigkeit im Layout und in der Organisation der verwalteten Bestände auszeichnet. Diese Flexibilität begünstigt den Einsatz in unterschiedlichen Bibliothekstypen, derzeit (April 2005) verwalten knapp 70 Standorte die rund 1.000 Einträge. Ursprünglich als Modul der "Digitalen Bibliothek" konzipiert, wird DigiLink zunehmend auch unabhängig davon eingesetzt und direkt in den eigenen Internetauftritt integriert.

Type

a

5.875945E-4 = product of:
  0.002350378 = sum of:
    0.002350378 = product of:
      0.007051134 = sum of:
        0.007051134 = weight(_text_:a in 1909) [ClassicSimilarity], result of:
          0.007051134 = score(doc=1909,freq=8.0), product of:
            0.055348642 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.04800207 = queryNorm
            0.12739488 = fieldWeight in 1909, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1909)
      0.33333334 = coord(1/3)
  0.25 = coord(1/4)

Abstract

Purpose - The general science portal "vascoda" merges structured, high-quality information collections from more than 40 providers on the basis of search engine technology (FAST) and a concept which treats semantic heterogeneity between different controlled vocabularies. First experiences with the portal show some weaknesses of this approach which come out in most metadata-driven Digital Libraries (DLs) or subject specific portals. The purpose of the paper is to propose models to reduce the semantic complexity in heterogeneous DLs. The aim is to introduce value-added services (treatment of term vagueness and document re-ranking) that gain a certain quality in DLs if they are combined with heterogeneity components established in the project "Competence Center Modeling and Treatment of Semantic Heterogeneity". Design/methodology/approach - Two methods, which are derived from scientometrics and network analysis, will be implemented with the objective to re-rank result sets by the following structural properties: the ranking of the results by core journals (so-called Bradfordizing) and ranking by centrality of authors in co-authorship networks. Findings - The methods, which will be implemented, focus on the query and on the result side of a search and are designed to positively influence each other. Conceptually, they will improve the search quality and guarantee that the most relevant documents in result sets will be ranked higher. Originality/value - The central impact of the paper focuses on the integration of three structural value-adding methods, which aim at reducing the semantic complexity represented in distributed DLs at several stages in the information retrieval process: query construction, search and ranking and re-ranking.

Type

a