Search (12 results, page 1 of 1)

  • × theme_ss:"Verteilte bibliographische Datenbanken"
  • × year_i:[2000 TO 2010}
  1. Milanesi, C.: Möglichkeiten der Kooperation im Rahmen von Subject Gateways : das Euler-Projekt im Vergleich mit weiteren europäischen Projekten (2001) 0.02 
    0.021194674 = product of:
  0.04238935 = sum of:
    0.04238935 = product of:
      0.0847787 = sum of:
        0.0847787 = weight(_text_:22 in 4865) [ClassicSimilarity], result of:
          0.0847787 = score(doc=4865,freq=2.0), product of:
            0.18260197 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052144732 = queryNorm
            0.46428138 = fieldWeight in 4865, 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=4865)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 6.2002 19:41:59
  2. Lopatenko, A.; Asserson, A.; Jeffery, K.G.: CERIF - Information retrieval of research information in a distributed heterogeneous environment (2002) 0.02 
    0.02116508 = product of:
  0.04233016 = sum of:
    0.04233016 = product of:
      0.08466032 = sum of:
        0.08466032 = weight(_text_:data in 3597) [ClassicSimilarity], result of:
          0.08466032 = score(doc=3597,freq=12.0), product of:
            0.16488427 = queryWeight, product of:
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.052144732 = queryNorm
            0.513453 = fieldWeight in 3597, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.046875 = fieldNorm(doc=3597)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    User demands to have access to complete and actual information about research may require integration of data from different CRISs. CRISs are rarely homogenous systems and problems of CRISs integration must be addressed from technological point of view. Implementation of CRIS providing access to heterogeneous data distributed among a number of CRISs is described. A few technologies - distributed databases, web services, semantic web are used for distributed CRIS to address different user requirements. Distributed databases serve to implement very efficient integration of homogenous systems, web services - to provide open access to research information, semantic web - to solve problems of integration semantically and structurally heterogeneous data sources and provide intelligent data retrieval interfaces. The problems of data completeness in distributed systems are addressed and CRIS-adequate solution for data completeness is suggested.
  3. Fang, L.: ¬A developing search service : heterogeneous resources integration and retrieval system (2004) 0.01 
    0.014401014 = product of:
  0.028802028 = sum of:
    0.028802028 = product of:
      0.057604056 = sum of:
        0.057604056 = weight(_text_:data in 1193) [ClassicSimilarity], result of:
          0.057604056 = score(doc=1193,freq=8.0), product of:
            0.16488427 = queryWeight, product of:
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.052144732 = queryNorm
            0.34936053 = fieldWeight in 1193, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1193)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    This article describes two approaches for searching heterogeneous resources, which are explained as they are used in two corresponding existing systems-RIRS (Resource Integration Retrieval System) and HRUSP (Heterogeneous Resource Union Search Platform). On analyzing the existing systems, a possible framework-the MUSP (Multimetadata-Based Union Search Platform) is presented. Libraries now face a dilemma. On one hand, libraries subscribe to many types of database retrieval systems that are produced by various providers. The libraries build their data and information systems independently. This results in highly heterogeneous and distributed systems at the technical level (e.g., different operating systems and user interfaces) and at the conceptual level (e.g., the same objects are named using different terms). On the other hand, end users want to access all these heterogeneous data via a union interface, without having to know the structure of each information system or the different retrieval methods used by the systems. Libraries must achieve a harmony between information providers and users. In order to bridge the gap between the service providers and the users, it would seem that all source databases would need to be rebuilt according to a uniform data structure and query language, but this seems impossible. Fortunately, however, libraries and information and technology providers are now making an effort to find a middle course that meets the requirements of both data providers and users. They are doing this through resource integration.
  4. Kaizik, A.; Gödert, W.; Milanesi, C.: Erfahrungen und Ergebnisse aus der Evaluierung des EU-Projektes EULER im Rahmen des an der FH Köln angesiedelten Projektes EJECT (Evaluation von Subject Gateways des World Wide Web (2001) 0.01 
    0.012489081 = product of:
  0.024978163 = sum of:
    0.024978163 = product of:
      0.049956325 = sum of:
        0.049956325 = weight(_text_:22 in 5801) [ClassicSimilarity], result of:
          0.049956325 = score(doc=5801,freq=4.0), product of:
            0.18260197 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052144732 = queryNorm
            0.27358043 = fieldWeight in 5801, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5801)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 6.2002 19:42:22
  5. Heery, R.: Information gateways : collaboration and content (2000) 0.01 
    0.0123635605 = product of:
  0.024727121 = sum of:
    0.024727121 = product of:
      0.049454242 = sum of:
        0.049454242 = weight(_text_:22 in 4866) [ClassicSimilarity], result of:
          0.049454242 = score(doc=4866,freq=2.0), product of:
            0.18260197 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052144732 = queryNorm
            0.2708308 = fieldWeight in 4866, 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=4866)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 6.2002 19:38:54
  6. Neuroth, H.; Lepschy, P.: ¬Das EU-Projekt Renardus (2001) 0.01 
    0.010597337 = product of:
  0.021194674 = sum of:
    0.021194674 = product of:
      0.04238935 = sum of:
        0.04238935 = weight(_text_:22 in 5589) [ClassicSimilarity], result of:
          0.04238935 = score(doc=5589,freq=2.0), product of:
            0.18260197 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052144732 = queryNorm
            0.23214069 = fieldWeight in 5589, 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=5589)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 6.2002 19:32:15
  7. Avrahami, T.T.; Yau, L.; Si, L.; Callan, J.P.: ¬The FedLemur project : Federated search in the real world (2006) 0.01 
    0.010597337 = product of:
  0.021194674 = sum of:
    0.021194674 = product of:
      0.04238935 = sum of:
        0.04238935 = weight(_text_:22 in 5271) [ClassicSimilarity], result of:
          0.04238935 = score(doc=5271,freq=2.0), product of:
            0.18260197 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052144732 = queryNorm
            0.23214069 = fieldWeight in 5271, 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=5271)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 7.2006 16:02:07
  8. Meiert, M.: Elektronische Publikationen an Hochschulen : Modellierung des elektronischen Publikationsprozesses am Beispiel der Universität Hildesheim (2006) 0.01 
    0.010597337 = product of:
  0.021194674 = sum of:
    0.021194674 = product of:
      0.04238935 = sum of:
        0.04238935 = weight(_text_:22 in 5974) [ClassicSimilarity], result of:
          0.04238935 = score(doc=5974,freq=2.0), product of:
            0.18260197 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052144732 = queryNorm
            0.23214069 = fieldWeight in 5974, 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=5974)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    1. 9.2006 13:22:15
  9. Krause, J.: Heterogenität und Integration : Zur Weiterentwicklung von Inhaltserschließung und Retrieval in sich veränderten Kontexten (2001) 0.01 
    0.010183054 = product of:
  0.020366108 = sum of:
    0.020366108 = product of:
      0.040732216 = sum of:
        0.040732216 = weight(_text_:data in 6071) [ClassicSimilarity], result of:
          0.040732216 = score(doc=6071,freq=4.0), product of:
            0.16488427 = queryWeight, product of:
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.052144732 = queryNorm
            0.24703519 = fieldWeight in 6071, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.0390625 = fieldNorm(doc=6071)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    As an important support tool in science research, specialized information systems are rapidly changing their character. The potential for improvement compared with today's usual systems is enormous. This fact will be demonstrated by means of two problem complexes: - WWW search engines, which were developed without any government grants, are increasingly dominating the scene. Does the WWW displace information centers with their high quality databases? What are the results we can get nowadays using general WWW search engines? - In addition to the WWW and specialized databases, scientists now use WWW library catalogues of digital libraries, which combine the catalogues from an entire region or a country. At the same time, however, they are faced with highly decentralized heterogeneous databases which contain the widest range of textual sources and data, e.g. from surveys. One consequence is the presence of serious inconsistencies in quality, relevance and content analysis. Thus, the main problem to be solved is as follows: users must be supplied with heterogeneous data from different sources, modalities and content development processes via a visual user interface without inconsistencies in content development, for example, seriously impairing the quality of the search results, e. g. when phrasing their search inquiry in the terminology to which they are accustomed
  10. Quast, A.; Pfurr, N.: GEO-LEO setzt Open-Access-Prinzipien für die geowissenschaftliche Fachgemeinschaft um (2006) 0.01 
    0.010080709 = product of:
  0.020161418 = sum of:
    0.020161418 = product of:
      0.040322836 = sum of:
        0.040322836 = weight(_text_:data in 6095) [ClassicSimilarity], result of:
          0.040322836 = score(doc=6095,freq=2.0), product of:
            0.16488427 = queryWeight, product of:
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.052144732 = queryNorm
            0.24455236 = fieldWeight in 6095, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.0546875 = fieldNorm(doc=6095)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Die Virtuelle Fachbibliothek GEO-LEO ermöglicht seit diesem September Wissenschaftlern die gleichzeitige Recherche in über 50 Dokumentenservern im In- und Ausland'. Damit setzt GEO-LEO die Open-Access-Prinzipien für Geo- und Montanwissenschaftler vollständig um. Bereits seit Anfang des Jahres bietet die Virtuelle Fachbibliothek mit ihrer Publikationsplattform GEO-LEOe-docs Wissenschaftlern die Möglichkeit ihre Arbeitsergebnisse und Publikationen direkt im Internet zugänglich zu machen. Als sogenannter Data-Provider stellt GEO-LEO die Metadaten der aufgenommenen Dokumente anschließend über die standardisierte OAI-PMH-Schnittstelle zur Verfügung, um die weltweite Zugänglichkeit der Dokumente wesentlich zu verbessern.
  11. Johnson, E.H.: Objects for distributed heterogeneous information retrieval (2000) 0.01 
    0.0088311145 = product of:
  0.017662229 = sum of:
    0.017662229 = product of:
      0.035324458 = sum of:
        0.035324458 = weight(_text_:22 in 6959) [ClassicSimilarity], result of:
          0.035324458 = score(doc=6959,freq=2.0), product of:
            0.18260197 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052144732 = queryNorm
            0.19345059 = fieldWeight in 6959, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=6959)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 9.1997 19:16:05
  12. Subject retrieval in a networked environment : Proceedings of the IFLA Satellite Meeting held in Dublin, OH, 14-16 August 2001 and sponsored by the IFLA Classification and Indexing Section, the IFLA Information Technology Section and OCLC (2003) 0.00 
    0.0035324458 = product of:
  0.0070648915 = sum of:
    0.0070648915 = product of:
      0.014129783 = sum of:
        0.014129783 = weight(_text_:22 in 3964) [ClassicSimilarity], result of:
          0.014129783 = score(doc=3964,freq=2.0), product of:
            0.18260197 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052144732 = queryNorm
            0.07738023 = fieldWeight in 3964, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.015625 = fieldNorm(doc=3964)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Footnote
    Rez. in: KO 31(2004) no.2, S.117-118 (D. Campbell): "This excellent volume offers 22 papers delivered at an IFLA Satellite meeting in Dublin Ohio in 2001. The conference gathered together information and computer scientists to discuss an important and difficult question: in what specific ways can the accumulated skills, theories and traditions of librarianship be mobilized to face the challenges of providing subject access to information in present and future networked information environments? The papers which grapple with this question are organized in a surprisingly deft and coherent way. Many conferences and proceedings have unhappy sessions that contain a hodge-podge of papers that didn't quite fit any other categories. As befits a good classificationist, editor I.C. McIlwaine has kept this problem to a minimum. The papers are organized into eight sessions, which split into two broad categories. The first five sessions deal with subject domains, and the last three deal with subject access tools. The five sessions and thirteen papers that discuss access in different domains appear in order of in creasing intension. The first papers deal with access in multilingual environments, followed by papers an access across multiple vocabularies and across sectors, ending up with studies of domain-specific retrieval (primarily education). Some of the papers offer predictably strong work by scholars engaged in ongoing, long-term research. Gerard Riesthuis offers a clear analysis of the complexities of negotiating non-identical thesauri, particularly in cases where hierarchical structure varies across different languages. Hope Olson and Dennis Ward use Olson's familiar and welcome method of using provocative and unconventional theory to generate meliorative approaches to blas in general subject access schemes. Many papers, an the other hand, deal with specific ongoing projects: Renardus, The High Level Thesaurus Project, The Colorado Digitization Project and The Iter Bibliography for medieval and Renaissance material. Most of these papers display a similar structure: an explanation of the theory and purpose of the project, an account of problems encountered in the implementation, and a discussion of the results, both promising and disappointing, thus far. Of these papers, the account of the Multilanguage Access to Subjects Project in Europe (MACS) deserves special mention. In describing how the project is founded an the principle of the equality of languages, with each subject heading language maintained in its own database, and with no single language used as a pivot for the others, Elisabeth Freyre and Max Naudi offer a particularly vivid example of the way the ethics of librarianship translate into pragmatic contexts and concrete procedures. The three sessions and nine papers devoted to subject access tools split into two kinds: papers that discuss the use of theory and research to generate new tools for a networked environment, and those that discuss the transformation of traditional subject access tools in this environment. In the new tool development area, Mary Burke provides a promising example of the bidirectional approach that is so often necessary: in her case study of user-driven classification of photographs, she user personal construct theory to clarify the practice of classification, while at the same time using practice to test the theory. Carol Bean and Rebecca Green offer an intriguing combination of librarianship and computer science, importing frame representation technique from artificial intelligence to standardize syntagmatic relationships to enhance recall and precision.

Authors

Languages

Types

Themes