Search (109 results, page 1 of 6)

0.06173303 = product of:
  0.09259954 = sum of:
    0.075279765 = weight(_text_:resources in 3628) [ClassicSimilarity], result of:
      0.075279765 = score(doc=3628,freq=8.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.40330917 = fieldWeight in 3628, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3628)
    0.017319772 = product of:
      0.034639545 = sum of:
        0.034639545 = weight(_text_:22 in 3628) [ClassicSimilarity], result of:
          0.034639545 = score(doc=3628,freq=2.0), product of:
            0.17906146 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051133685 = queryNorm
            0.19345059 = fieldWeight in 3628, 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=3628)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Abstract

Purpose: To develop a prototype middleware framework between different terminology resources in order to provide a subject cross-browsing service for library portal systems. Design/methodology/approach: Nine terminology experts were interviewed to collect appropriate knowledge to support the development of a theoretical framework for the research. Based on this, a simplified software-based prototype system was constructed incorporating the knowledge acquired. The prototype involved mappings between the computer science schedule of the Dewey Decimal Classification (which acted as a spine) and two controlled vocabularies UKAT and ACM Computing Classification. Subsequently, six further experts in the field were invited to evaluate the prototype system and provide feedback to improve the framework. Findings: The major findings showed that given the large variety of terminology resources distributed on the web, the proposed middleware service is essential to integrate technically and semantically the different terminology resources in order to facilitate subject cross-browsing. A set of recommendations are also made outlining the important approaches and features that support such a cross browsing middleware service.

Content

This paper is a pre-print version presented at the ISKO UK 2009 conference, 22-23 June, prior to peer review and editing. For published proceedings see special issue of Aslib Proceedings journal.

0.044487845 = product of:
  0.13346353 = sum of:
    0.13346353 = sum of:
      0.064184435 = weight(_text_:management in 1287) [ClassicSimilarity], result of:
        0.064184435 = score(doc=1287,freq=2.0), product of:
          0.17235184 = queryWeight, product of:
            3.3706124 = idf(docFreq=4130, maxDocs=44218)
            0.051133685 = queryNorm
          0.37240356 = fieldWeight in 1287, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.3706124 = idf(docFreq=4130, maxDocs=44218)
            0.078125 = fieldNorm(doc=1287)
      0.06927909 = weight(_text_:22 in 1287) [ClassicSimilarity], result of:
        0.06927909 = score(doc=1287,freq=2.0), product of:
          0.17906146 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.051133685 = queryNorm
          0.38690117 = fieldWeight in 1287, 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=1287)
  0.33333334 = coord(1/3)

Content

Vortrag anlässlich des Workshops: "Extending the multilingual capacity of The European Library in the EDL project Stockholm, Swedish National Library, 22-23 November 2007".

0.031583168 = product of:
  0.094749495 = sum of:
    0.094749495 = product of:
      0.28424847 = sum of:
        0.28424847 = weight(_text_:3a in 306) [ClassicSimilarity], result of:
          0.28424847 = score(doc=306,freq=2.0), product of:
            0.43351194 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.051133685 = queryNorm
            0.65568775 = fieldWeight in 306, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.0546875 = fieldNorm(doc=306)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)

Content

Vgl.: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5386707&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D5386707.

0.03114149 = product of:
  0.09342447 = sum of:
    0.09342447 = sum of:
      0.044929106 = weight(_text_:management in 3730) [ClassicSimilarity], result of:
        0.044929106 = score(doc=3730,freq=2.0), product of:
          0.17235184 = queryWeight, product of:
            3.3706124 = idf(docFreq=4130, maxDocs=44218)
            0.051133685 = queryNorm
          0.2606825 = fieldWeight in 3730, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.3706124 = idf(docFreq=4130, maxDocs=44218)
            0.0546875 = fieldNorm(doc=3730)
      0.04849536 = weight(_text_:22 in 3730) [ClassicSimilarity], result of:
        0.04849536 = score(doc=3730,freq=2.0), product of:
          0.17906146 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.051133685 = queryNorm
          0.2708308 = fieldWeight in 3730, 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=3730)
  0.33333334 = coord(1/3)

Abstract

Das BMBF hat bis Ende 2007 ein Projekt gefördert, dessen Aufgabe es war, die Erstellung und das Management von Crosskonkordanzen zwischen kontrollierten Vokabularen (Thesauri, Klassifikationen, Deskriptorenlisten) zu organisieren. In drei Jahren wurden 64 Crosskonkordanzen mit mehr als 500.000 Relationen zwischen kontrollierten Vokabularen aus den Sozialwissenschaften und anderen Fachgebieten umgesetzt. In der Schlussphase des Projekts wurde eine umfangreiche Evaluation durchgeführt, die die Effektivität der Crosskonkordanzen in unterschiedlichen Informationssystemen testen sollte. Der Artikel berichtet über die Anwendungsmöglichkeiten der Heterogenitätsbehandlung durch Crosskonkordanzen und die Ergebnisse der umfangreichen Analysen.

Source

Wissensspeicher in digitalen Räumen: Nachhaltigkeit - Verfügbarkeit - semantische Interoperabilität. Proceedings der 11. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation, Konstanz, 20. bis 22. Februar 2008. Hrsg.: J. Sieglerschmidt u. H.P.Ohly

0.030111905 = product of:
  0.09033571 = sum of:
    0.09033571 = weight(_text_:resources in 4158) [ClassicSimilarity], result of:
      0.09033571 = score(doc=4158,freq=8.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.483971 = fieldWeight in 4158, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.046875 = fieldNorm(doc=4158)
  0.33333334 = coord(1/3)

Abstract

The treatment of subjects by Functional Requirements for Bibliographic Records (FRBR) has attracted less attention than some of its other aspects, but there seems to be a general consensus that it needs work. While some have proposed elaborating its subject categories-concepts, objects, events, and places-to increase their semantic complexity, a working group of the International Federation of Library Associations and Institutions (IFLA) has recently made a promising proposal that essentially bypasses those categories in favor of one entity, thema. This article gives an overview of the proposal and discusses its relevance to another difficult problem, ambiguities in the establishment of headings for buildings.Use of dynamic links from subject-based finding aids to records for electronic resources in the OPAC is suggested as one method for by-passing the OPAC search interface, thus making the library's electronic resources more accessible. This method simplifies maintenance of links to electronic resources and aids instruction by providing a single, consistent access point to them. Results of a usage study from before and after this project was completed show a consistent, often dramatic increase in use of the library's electronic resources.

0.029311817 = product of:
  0.043967724 = sum of:
    0.030111905 = weight(_text_:resources in 1096) [ClassicSimilarity], result of:
      0.030111905 = score(doc=1096,freq=2.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.16132367 = fieldWeight in 1096, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.03125 = fieldNorm(doc=1096)
    0.013855817 = product of:
      0.027711634 = sum of:
        0.027711634 = weight(_text_:22 in 1096) [ClassicSimilarity], result of:
          0.027711634 = score(doc=1096,freq=2.0), product of:
            0.17906146 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051133685 = queryNorm
            0.15476047 = fieldWeight in 1096, 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=1096)
      0.5 = coord(1/2)
  0.6666667 = coord(2/3)

Date

28.10.2013 17:22:17

0.028055113 = product of:
  0.084165335 = sum of:
    0.084165335 = weight(_text_:resources in 3944) [ClassicSimilarity], result of:
      0.084165335 = score(doc=3944,freq=10.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.45091337 = fieldWeight in 3944, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3944)
  0.33333334 = coord(1/3)

Abstract

Purpose - The paper aims to develop a prototype middleware framework between different terminology resources in order to provide a subject cross-browsing service for library portal systems. Design/methodology/approach - Nine terminology experts were interviewed to collect appropriate knowledge to support the development of a theoretical framework for the research. Based on this, a simplified software-based prototype system was constructed incorporating the knowledge acquired. The prototype involved mappings between the computer science schedule of the Dewey Decimal Classification (which acted as a spine) and two controlled vocabularies, UKAT and ACM Computing Classification. Subsequently, six further experts in the field were invited to evaluate the prototype system and provide feedback to improve the framework. Findings - The major findings showed that, given the large variety of terminology resources distributed throughout the web, the proposed middleware service is essential to integrate technically and semantically the different terminology resources in order to facilitate subject cross-browsing. A set of recommendations are also made, outlining the important approaches and features that support such a cross-browsing middleware service. Originality/value - Cross-browsing features are lacking in current library portal meta-search systems. Users are therefore deprived of this valuable retrieval provision. This research investigated the case for such a system and developed a prototype to fill this gap.

Footnote

Beitrag in einem Special Issue: Content architecture: exploiting and managing diverse resources: proceedings of the first national conference of the United Kingdom chapter of the International Society for Knowedge Organization (ISKO)

0.026077677 = product of:
  0.078233026 = sum of:
    0.078233026 = weight(_text_:resources in 2965) [ClassicSimilarity], result of:
      0.078233026 = score(doc=2965,freq=6.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.4191312 = fieldWeight in 2965, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.046875 = fieldNorm(doc=2965)
  0.33333334 = coord(1/3)

Abstract

Repositories are web portals that provide access to learning objects. Resources can be easily located through the use of metadata, an important factor to increase the ease of searching for digital resources in repositories. However, there are as yet no similarly effective methods in order to increase access to learning objects. The main goal of this paper is to offer an alternative search system to improve access to academic learning objects and publications for several repositories through the use of information visualisation and Simple Knowledge Organization Schemes (SKOS). To this end, we have developed a visual framework and have used the Organic.Edunet and AGRIS as case studies in order to access academic and scientific publication resources respectively. In this paper, we present the results of our work through a test aimed at evaluating the whole visual framework, and offer recommendations on how to integrate this type of visual search into academic repositories based on SKOS.

0.026077677 = product of:
  0.078233026 = sum of:
    0.078233026 = weight(_text_:resources in 5993) [ClassicSimilarity], result of:
      0.078233026 = score(doc=5993,freq=6.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.4191312 = fieldWeight in 5993, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.046875 = fieldNorm(doc=5993)
  0.33333334 = coord(1/3)

Abstract

The lack of standardization in the production, organization and dissemination of information in documentation centers and institutions alike, as a result from the digitization of collections and their availability on the internet has called for integration efforts. The sheer availability of multimedia content has fostered the development of many distinct and, most of the time, independent metadata standards for its description. This study aims at presenting and comparing the existing standards of metadata, vocabularies and ontologies for multimedia annotation and also tries to offer a synthetic overview of its main strengths and weaknesses, aiding efforts for semantic integration and enhancing the findability of available multimedia resources on the web. We also aim at unveiling the characteristics that could, should and are perhaps not being highlighted in the characterization of multimedia resources.

0.025093256 = product of:
  0.075279765 = sum of:
    0.075279765 = weight(_text_:resources in 101) [ClassicSimilarity], result of:
      0.075279765 = score(doc=101,freq=8.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.40330917 = fieldWeight in 101, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.0390625 = fieldNorm(doc=101)
  0.33333334 = coord(1/3)

LCSH

Libraries and museums / Electronic information resources
Electronic information resources

Subject

Libraries and museums / Electronic information resources
Electronic information resources

0.024841055 = product of:
  0.074523166 = sum of:
    0.074523166 = weight(_text_:resources in 125) [ClassicSimilarity], result of:
      0.074523166 = score(doc=125,freq=4.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.39925572 = fieldWeight in 125, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.0546875 = fieldNorm(doc=125)
  0.33333334 = coord(1/3)

Abstract

Library Technical Services have benefited from numerous stimuli. Although initially looked at with suspicion, transitions such as the move from catalog cards to the MARC formats have proven enormously helpful to libraries and their patrons. Linked data and Artificial Intelligence (AI) hold the same promise. Through the conversion of metadata surrogates (cataloging) to linked open data, libraries can represent their resources on the Semantic Web. But in order to provide some form of controlled access to unstructured data, libraries must reach beyond traditional cataloging to new tools such as AI to provide consistent access to a growing world of full-text resources.

0.024586268 = product of:
  0.0737588 = sum of:
    0.0737588 = weight(_text_:resources in 5153) [ClassicSimilarity], result of:
      0.0737588 = score(doc=5153,freq=12.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.39516068 = fieldWeight in 5153, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.03125 = fieldNorm(doc=5153)
  0.33333334 = coord(1/3)

Abstract

This highly practical handbook teaches you how to unlock the value of your existing metadata through cleaning, reconciliation, enrichment and linking and how to streamline the process of new metadata creation. Libraries, archives and museums are facing up to the challenge of providing access to fast growing collections whilst managing cuts to budgets. Key to this is the creation, linking and publishing of good quality metadata as Linked Data that will allow their collections to be discovered, accessed and disseminated in a sustainable manner. This highly practical handbook teaches you how to unlock the value of your existing metadata through cleaning, reconciliation, enrichment and linking and how to streamline the process of new metadata creation. Metadata experts Seth van Hooland and Ruben Verborgh introduce the key concepts of metadata standards and Linked Data and how they can be practically applied to existing metadata, giving readers the tools and understanding to achieve maximum results with limited resources. Readers will learn how to critically assess and use (semi-)automated methods of managing metadata through hands-on exercises within the book and on the accompanying website. Each chapter is built around a case study from institutions around the world, demonstrating how freely available tools are being successfully used in different metadata contexts. This handbook delivers the necessary conceptual and practical understanding to empower practitioners to make the right decisions when making their organisations resources accessible on the Web. Key topics include, the value of metadata; metadata creation - architecture, data models and standards; metadata cleaning; metadata reconciliation; metadata enrichment through Linked Data and named-entity recognition; importing and exporting metadata; ensuring a sustainable publishing model. This will be an invaluable guide for metadata practitioners and researchers within all cultural heritage contexts, from library cataloguers and archivists to museum curatorial staff. It will also be of interest to students and academics within information science and digital humanities fields. IT managers with responsibility for information systems, as well as strategy heads and budget holders, at cultural heritage organisations, will find this a valuable decision-making aid.

LCSH

Libraries and museums / Electronic information resources
Archives / Electronic information resources

Subject

Libraries and museums / Electronic information resources
Archives / Electronic information resources

0.022559404 = product of:
  0.06767821 = sum of:
    0.06767821 = product of:
      0.20303462 = sum of:
        0.20303462 = weight(_text_:3a in 1000) [ClassicSimilarity], result of:
          0.20303462 = score(doc=1000,freq=2.0), product of:
            0.43351194 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.051133685 = queryNorm
            0.46834838 = fieldWeight in 1000, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1000)
      0.33333334 = coord(1/3)
  0.33333334 = coord(1/3)

Content

Master thesis Master of Science (Library and Information Studies) (MSc), Universität Wien. Advisor: Christoph Steiner. Vgl.: https://www.researchgate.net/publication/371680244_Vergabe_von_DDC-Sachgruppen_mittels_eines_Schlagwort-Thesaurus. DOI: 10.25365/thesis.70030. Vgl. dazu die Präsentation unter: https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=web&cd=&ved=0CAIQw7AJahcKEwjwoZzzytz_AhUAAAAAHQAAAAAQAg&url=https%3A%2F%2Fwiki.dnb.de%2Fdownload%2Fattachments%2F252121510%2FDA3%2520Workshop-Gabler.pdf%3Fversion%3D1%26modificationDate%3D1671093170000%26api%3Dv2&psig=AOvVaw0szwENK1or3HevgvIDOfjx&ust=1687719410889597&opi=89978449.

0.022243923 = product of:
  0.066731766 = sum of:
    0.066731766 = sum of:
      0.032092217 = weight(_text_:management in 1678) [ClassicSimilarity], result of:
        0.032092217 = score(doc=1678,freq=2.0), product of:
          0.17235184 = queryWeight, product of:
            3.3706124 = idf(docFreq=4130, maxDocs=44218)
            0.051133685 = queryNorm
          0.18620178 = fieldWeight in 1678, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.3706124 = idf(docFreq=4130, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1678)
      0.034639545 = weight(_text_:22 in 1678) [ClassicSimilarity], result of:
        0.034639545 = score(doc=1678,freq=2.0), product of:
          0.17906146 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.051133685 = queryNorm
          0.19345059 = fieldWeight in 1678, 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=1678)
  0.33333334 = coord(1/3)

Abstract

A case study in compatibility and heterogeneity of knowledge organization (KO) systems and processes is presented. It is based in the experience of the author in the field of information for consumer protection, a good example of the emerging transdisciplinary applied social sciences. The activities and knowledge organization problems and solutions of the Aragonian Consumers' Information and Documentation Centre are described and analyzed. Six assertions can be concluded: a) heterogeneity and compatibility are certainly an inherent problem in knowledge organization and also in practical domains; b) knowledge organization is also a social task, not only a lögical one; c) knowledge organization is affected by economical and efficiency considerations; d) knowledge organization is at the heart of Knowledge Management; e) identifying and maintaining the focus in interdisciplinary fields is a must; f the different knowledge organization tools of a institution must be considered as an integrated system, pursuing a unifying model.

Date

16. 3.2008 18:22:50

0.022243923 = product of:
  0.066731766 = sum of:
    0.066731766 = sum of:
      0.032092217 = weight(_text_:management in 2649) [ClassicSimilarity], result of:
        0.032092217 = score(doc=2649,freq=2.0), product of:
          0.17235184 = queryWeight, product of:
            3.3706124 = idf(docFreq=4130, maxDocs=44218)
            0.051133685 = queryNorm
          0.18620178 = fieldWeight in 2649, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.3706124 = idf(docFreq=4130, maxDocs=44218)
            0.0390625 = fieldNorm(doc=2649)
      0.034639545 = weight(_text_:22 in 2649) [ClassicSimilarity], result of:
        0.034639545 = score(doc=2649,freq=2.0), product of:
          0.17906146 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.051133685 = queryNorm
          0.19345059 = fieldWeight in 2649, 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=2649)
  0.33333334 = coord(1/3)

Abstract

OCLC's Crosswalk Web Service (Godby, Smith and Childress, 2008) formalizes the notion of crosswalk, as defined in Gill,et al. (n.d.), by hiding technical details and permitting the semantic equivalences to emerge as the centerpiece. One outcome is that metadata experts, who are typically not programmers, can enter the translation logic into a spreadsheet that can be automatically converted into executable code. In this paper, we describe the implementation of the Dublin Core Terms application profile in the management of crosswalks involving MARC. A crosswalk that encodes an application profile extends the typical format with two columns: one that annotates the namespace to which an element belongs, and one that annotates a 'broader-narrower' relation between a pair of elements, such as Dublin Core coverage and Dublin Core Terms spatial. This information is sufficient to produce scripts written in OCLC's Semantic Equivalence Expression Language (or Seel), which are called from the Crosswalk Web Service to generate production-grade translations. With its focus on elements that can be mixed, matched, added, and redefined, the application profile (Heery and Patel, 2000) is a natural fit with the translation model of the Crosswalk Web Service, which attempts to achieve interoperability by mapping one pair of elements at a time.

Source

Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas

0.021731397 = product of:
  0.06519419 = sum of:
    0.06519419 = weight(_text_:resources in 2205) [ClassicSimilarity], result of:
      0.06519419 = score(doc=2205,freq=6.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.349276 = fieldWeight in 2205, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2205)
  0.33333334 = coord(1/3)

Abstract

The concept of Linked Data has been an emerging theme within the computing and digital heritage areas in recent years. The growth and scale of Linked Data has underlined the need for greater commonality in concept referencing, to avoid local redefinition and duplication of reference resources. Achieving domain-wide agreement on common vocabularies would be an unreasonable expectation; however, datasets often already have local vocabulary resources defined, and so the prospects for large-scale interoperability can be substantially improved by creating alignment links from these local vocabularies out to common external reference resources. The ARIADNE project is undertaking large-scale integration of archaeology dataset metadata records, to create a cross-searchable research repository resource. Key to enabling this cross search will be the 'subject' metadata originating from multiple data providers, containing terms from multiple multilingual controlled vocabularies. This paper discusses various aspects of vocabulary mapping. Experience from the previous SENESCHAL project in the publication of controlled vocabularies as Linked Open Data is discussed, emphasizing the importance of unique URI identifiers for vocabulary concepts. There is a need to align legacy indexing data to the uniquely defined concepts and examples are discussed of SENESCHAL data alignment work. A case study for the ARIADNE project presents work on mapping between vocabularies, based on the Getty Art and Architecture Thesaurus as a central hub and employing an interactive vocabulary mapping tool developed for the project, which generates SKOS mapping relationships in JSON and other formats. The potential use of such vocabulary mappings to assist cross search over archaeological datasets from different countries is illustrated in a pilot experiment. The results demonstrate the enhanced opportunities for interoperability and cross searching that the approach offers.

0.021731397 = product of:
  0.06519419 = sum of:
    0.06519419 = weight(_text_:resources in 4232) [ClassicSimilarity], result of:
      0.06519419 = score(doc=4232,freq=24.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.349276 = fieldWeight in 4232, product of:
          4.8989797 = tf(freq=24.0), with freq of:
            24.0 = termFreq=24.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.01953125 = fieldNorm(doc=4232)
  0.33333334 = coord(1/3)

Abstract

This PhD-thesis describes how to effectively explore linked data on the Web. The main focus is on scenarios where users want to discover relationships between resources rather than finding out more about something specific. Searching for a specific document or piece of information fits in the theoretical framework of information retrieval and is associated with exploratory search. Exploratory search goes beyond 'looking up something' when users are seeking more detailed understanding, further investigation or navigation of the initial search results. The ideas behind exploratory search and querying linked data merge when it comes to the way knowledge is represented and indexed by machines - how data is structured and stored for optimal searchability. Queries and information should be aligned to facilitate that searches also reveal connections between results. This implies that they take into account the same semantic entities, relevant at that moment. To realize this, we research three techniques that are evaluated one by one in an experimental set-up to assess how well they succeed in their goals. In the end, the techniques are applied to a practical use case that focuses on forming a bridge between the Web and the use of digital libraries in scientific research. Our first technique focuses on the interactive visualization of search results. Linked data resources can be brought in relation with each other at will. This leads to complex and diverse graphs structures. Our technique facilitates navigation and supports a workflow starting from a broad overview on the data and allows narrowing down until the desired level of detail to then broaden again. To validate the flow, two visualizations where implemented and presented to test-users. The users judged the usability of the visualizations, how the visualizations fit in the workflow and to which degree their features seemed useful for the exploration of linked data.
Our first technique focuses on the interactive visualization of search results. Linked data resources can be brought in relation with each other at will. This leads to complex and diverse graphs structures. Our technique facilitates navigation and supports a workflow starting from a broad overview on the data and allows narrowing down until the desired level of detail to then broaden again. To validate the flow, two visualizations where implemented and presented to test-users. The users judged the usability of the visualizations, how the visualizations fit in the workflow and to which degree their features seemed useful for the exploration of linked data. There is a difference in the way users interact with resources, visually or textually, and how resources are represented for machines to be processed by algorithms. This difference complicates bridging the users' intents and machine executable queries. It is important to implement this 'translation' mechanism to impact the search as favorable as possible in terms of performance, complexity and accuracy. To do this, we explain a second technique, that supports such a bridging component. Our second technique is developed around three features that support the search process: looking up, relating and ranking resources. The main goal is to ensure that resources in the results are as precise and relevant as possible. During the evaluation of this technique, we did not only look at the precision of the search results but also investigated how the effectiveness of the search evolved while the user executed certain actions sequentially.
When we speak about finding relationships between resources, it is necessary to dive deeper in the structure. The graph structure of linked data where the semantics give meaning to the relationships between resources enable the execution of pathfinding algorithms. The assigned weights and heuristics are base components of such algorithms and ultimately define (the order) which resources are included in a path. These paths explain indirect connections between resources. Our third technique proposes an algorithm that optimizes the choice of resources in terms of serendipity. Some optimizations guard the consistence of candidate-paths where the coherence of consecutive connections is maximized to avoid trivial and too arbitrary paths. The implementation uses the A* algorithm, the de-facto reference when it comes to heuristically optimized minimal cost paths. The effectiveness of paths was measured based on common automatic metrics and surveys where the users could indicate their preference for paths, generated each time in a different way. Finally, all our techniques are applied to a use case about publications in digital libraries where they are aligned with information about scientific conferences and researchers. The application to this use case is a practical example because the different aspects of exploratory search come together. In fact, the techniques also evolved from the experiences when implementing the use case. Practical details about the semantic model are explained and the implementation of the search system is clarified module by module. The evaluation positions the result, a prototype of a tool to explore scientific publications, researchers and conferences next to some important alternatives.

0.021512985 = product of:
  0.064538956 = sum of:
    0.064538956 = weight(_text_:resources in 5903) [ClassicSimilarity], result of:
      0.064538956 = score(doc=5903,freq=12.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.3457656 = fieldWeight in 5903, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.02734375 = fieldNorm(doc=5903)
  0.33333334 = coord(1/3)

Abstract

RDF - the Resource Description Framework - is a foundation for processing metadata; it provides interoperability between applications that exchange machine-understandable information on the Web. RDF emphasizes facilities to enable automated processing of Web resources. RDF metadata can be used in a variety of application areas; for example: in resource discovery to provide better search engine capabilities; in cataloging for describing the content and content relationships available at a particular Web site, page, or digital library; by intelligent software agents to facilitate knowledge sharing and exchange; in content rating; in describing collections of pages that represent a single logical "document"; for describing intellectual property rights of Web pages, and in many others. RDF with digital signatures will be key to building the "Web of Trust" for electronic commerce, collaboration, and other applications. Metadata is "data about data" or specifically in the context of RDF "data describing web resources." The distinction between "data" and "metadata" is not an absolute one; it is a distinction created primarily by a particular application. Many times the same resource will be interpreted in both ways simultaneously. RDF encourages this view by using XML as the encoding syntax for the metadata. The resources being described by RDF are, in general, anything that can be named via a URI. The broad goal of RDF is to define a mechanism for describing resources that makes no assumptions about a particular application domain, nor defines the semantics of any application domain. The definition of the mechanism should be domain neutral, yet the mechanism should be suitable for describing information about any domain. This document introduces a model for representing RDF metadata and one syntax for expressing and transporting this metadata in a manner that maximizes the interoperability of independently developed web servers and clients. The syntax described in this document is best considered as a "serialization syntax" for the underlying RDF representation model. The serialization syntax is XML, XML being the W3C's work-in-progress to define a richer Web syntax for a variety of applications. RDF and XML are complementary; there will be alternate ways to represent the same RDF data model, some more suitable for direct human authoring. Future work may lead to including such alternatives in this document.

Content

RDF Data Model At the core of RDF is a model for representing named properties and their values. These properties serve both to represent attributes of resources (and in this sense correspond to usual attribute-value-pairs) and to represent relationships between resources. The RDF data model is a syntax-independent way of representing RDF statements. RDF statements that are syntactically very different could mean the same thing. This concept of equivalence in meaning is very important when performing queries, aggregation and a number of other tasks at which RDF is aimed. The equivalence is defined in a clean machine understandable way. Two pieces of RDF are equivalent if and only if their corresponding data model representations are the same. Table of contents 1. Introduction 2. RDF Data Model 3. RDF Grammar 4. Signed RDF 5. Examples 6. Appendix A: Brief Explanation of XML Namespaces

0.021292333 = product of:
  0.063876994 = sum of:
    0.063876994 = weight(_text_:resources in 241) [ClassicSimilarity], result of:
      0.063876994 = score(doc=241,freq=4.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.34221917 = fieldWeight in 241, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.046875 = fieldNorm(doc=241)
  0.33333334 = coord(1/3)

Abstract

The semantic heterogeneity presented by Web information in the Agricultural domain presents tremendous information retrieval challenges. This article presents work taking place at the Food and Agriculture Organizations (FAO) which addresses this challenge. Based on the analysis of resources in the domain of agriculture, this paper proposes (a) an application profile (AP) for dealing with the problem of heterogeneity originating from differences in terminologies, domain coverage, and domain modelling, and (b) a root application ontology (AAO) based on the application profile which can serve as a basis for extending knowledge of the domain. The paper explains how even a small investment in the enhancement of relations between vocabularies, both metadata and domain-specific, yields a relatively large return on investment.

0.021292333 = product of:
  0.063876994 = sum of:
    0.063876994 = weight(_text_:resources in 39) [ClassicSimilarity], result of:
      0.063876994 = score(doc=39,freq=4.0), product of:
        0.18665522 = queryWeight, product of:
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.051133685 = queryNorm
        0.34221917 = fieldWeight in 39, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.650338 = idf(docFreq=3122, maxDocs=44218)
          0.046875 = fieldNorm(doc=39)
  0.33333334 = coord(1/3)

Abstract

Digital cultural heritage resources are widely available on the web through the digital libraries of heritage institutions. To address the difficulties of discoverability in cultural heritage, the common practice is metadata aggregation, where centralized efforts like Europeana facilitate discoverability by collecting the resources' metadata. We present the results of the linked data aggregation task conducted within the Europeana Common Culture project, which attempted an innovative approach to aggregation based on linked data made available by cultural heritage institutions. This task ran for one year with participation of eleven organizations, involving the three member roles of the Europeana network: data providers, intermediary aggregators, and the central aggregation hub, Europeana. We report on the challenges that were faced by data providers, the standards and specifications applied, and the resulting aggregated metadata.