Search (130 results, page 1 of 7)

  • × theme_ss:"Semantische Interoperabilität"
  1. Mayr, P.; Schaer, P.; Mutschke, P.: ¬A science model driven retrieval prototype (2011) 0.14 
    0.1392412 = product of:
  0.18565494 = sum of:
    0.009988121 = product of:
      0.039952483 = sum of:
        0.039952483 = weight(_text_:based in 649) [ClassicSimilarity], result of:
          0.039952483 = score(doc=649,freq=4.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.28246817 = fieldWeight in 649, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.046875 = fieldNorm(doc=649)
      0.25 = coord(1/4)
    0.06775281 = weight(_text_:term in 649) [ClassicSimilarity], result of:
      0.06775281 = score(doc=649,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.309317 = fieldWeight in 649, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.046875 = fieldNorm(doc=649)
    0.107914 = weight(_text_:frequency in 649) [ClassicSimilarity], result of:
      0.107914 = score(doc=649,freq=2.0), product of:
        0.27643865 = queryWeight, product of:
          5.888745 = idf(docFreq=332, maxDocs=44218)
          0.04694356 = queryNorm
        0.39037234 = fieldWeight in 649, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.888745 = idf(docFreq=332, maxDocs=44218)
          0.046875 = fieldNorm(doc=649)
  0.75 = coord(3/4)
    Abstract
    This paper is about a better understanding of the structure and dynamics of science and the usage of these insights for compensating the typical problems that arises in metadata-driven Digital Libraries. Three science model driven retrieval services are presented: co-word analysis based query expansion, re-ranking via Bradfordizing and author centrality. The services are evaluated with relevance assessments from which two important implications emerge: (1) precision values of the retrieval services are the same or better than the tf-idf retrieval baseline and (2) each service retrieved a disjoint set of documents. The different services each favor quite other - but still relevant - documents than pure term-frequency based rankings. The proposed models and derived retrieval services therefore open up new viewpoints on the scientific knowledge space and provide an alternative framework to structure scholarly information systems.
  2. Dobrev, P.; Kalaydjiev, O.; Angelova, G.: From conceptual structures to semantic interoperability of content (2007) 0.06 
    0.05958612 = product of:
  0.11917224 = sum of:
    0.008323434 = product of:
      0.033293735 = sum of:
        0.033293735 = weight(_text_:based in 4607) [ClassicSimilarity], result of:
          0.033293735 = score(doc=4607,freq=4.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.23539014 = fieldWeight in 4607, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4607)
      0.25 = coord(1/4)
    0.11084881 = sum of:
      0.079047784 = weight(_text_:assessment in 4607) [ClassicSimilarity], result of:
        0.079047784 = score(doc=4607,freq=2.0), product of:
          0.25917634 = queryWeight, product of:
            5.52102 = idf(docFreq=480, maxDocs=44218)
            0.04694356 = queryNorm
          0.30499613 = fieldWeight in 4607, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.52102 = idf(docFreq=480, maxDocs=44218)
            0.0390625 = fieldNorm(doc=4607)
      0.031801023 = weight(_text_:22 in 4607) [ClassicSimilarity], result of:
        0.031801023 = score(doc=4607,freq=2.0), product of:
          0.16438834 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.04694356 = queryNorm
          0.19345059 = fieldWeight in 4607, 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=4607)
  0.5 = coord(2/4)
    Abstract
    Smart applications behave intelligently because they understand at least partially the context where they operate. To do this, they need not only a formal domain model but also formal descriptions of the data they process and their own operational behaviour. Interoperability of smart applications is based on formalised definitions of all their data and processes. This paper studies the semantic interoperability of data in the case of eLearning and describes an experiment and its assessment. New content is imported into a knowledge-based learning environment without real updates of the original domain model, which is encoded as a knowledge base of conceptual graphs. A component called mediator enables the import by assigning dummy metadata annotations for the imported items. However, some functionality of the original system is lost, when processing the imported content, due to the lack of proper metadata annotation which cannot be associated fully automatically. So the paper presents an interoperability scenario when appropriate content items are viewed from the perspective of the original world and can be (partially) reused there.
    Source
    Conceptual structures: knowledge architectures for smart applications: 15th International Conference on Conceptual Structures, ICCS 2007, Sheffield, UK, July 22 - 27, 2007 ; proceedings. Eds.: U. Priss u.a
  3. Faro, S.; Francesconi, E.; Marinai, E.; Sandrucci, V.: Report on execution and results of the interoperability tests (2008) 0.04 
    0.044339523 = product of:
  0.17735809 = sum of:
    0.17735809 = sum of:
      0.12647645 = weight(_text_:assessment in 7411) [ClassicSimilarity], result of:
        0.12647645 = score(doc=7411,freq=2.0), product of:
          0.25917634 = queryWeight, product of:
            5.52102 = idf(docFreq=480, maxDocs=44218)
            0.04694356 = queryNorm
          0.4879938 = fieldWeight in 7411, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.52102 = idf(docFreq=480, maxDocs=44218)
            0.0625 = fieldNorm(doc=7411)
      0.05088163 = weight(_text_:22 in 7411) [ClassicSimilarity], result of:
        0.05088163 = score(doc=7411,freq=2.0), product of:
          0.16438834 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.04694356 = queryNorm
          0.30952093 = fieldWeight in 7411, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0625 = fieldNorm(doc=7411)
  0.25 = coord(1/4)
    Abstract
    - Formal characterization given to the thesaurus mapping problem - Interopearbility workflow - - Thesauri SKOS Core transformation - - Thesaurus Mapping algorithms implementation - The "gold standard" data set and the THALEN application - Thesaurus interoperability assessment measures - Experimental results
    Date
    7.11.2008 10:40:22
  4. Levergood, B.; Farrenkopf, S.; Frasnelli, E.: ¬The specification of the language of the field and interoperability : cross-language access to catalogues and online libraries (CACAO) (2008) 0.04 
    0.04341671 = product of:
  0.08683342 = sum of:
    0.06775281 = weight(_text_:term in 2646) [ClassicSimilarity], result of:
      0.06775281 = score(doc=2646,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.309317 = fieldWeight in 2646, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.046875 = fieldNorm(doc=2646)
    0.019080611 = product of:
      0.038161222 = sum of:
        0.038161222 = weight(_text_:22 in 2646) [ClassicSimilarity], result of:
          0.038161222 = score(doc=2646,freq=2.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.23214069 = fieldWeight in 2646, 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=2646)
      0.5 = coord(1/2)
  0.5 = coord(2/4)
    Abstract
    The CACAO Project (Cross-language Access to Catalogues and Online Libraries) has been designed to implement natural language processing and cross-language information retrieval techniques to provide cross-language access to information in libraries, a critical issue in the linguistically diverse European Union. This project report addresses two metadata-related challenges for the library community in this context: "false friends" (identical words having different meanings in different languages) and term ambiguity. The possible solutions involve enriching the metadata with attributes specifying language or the source authority file, or associating potential search terms to classes in a classification system. The European Library will evaluate an early implementation of this work in late 2008.
    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
  5. Andrade, J. de; Lopes Ginez de Lara, M.: Interoperability and mapping between knowledge organization systems : metathesaurus - Unified Medical Language System of the National Library of Medicine (2016) 0.04 
    0.038870465 = product of:
  0.07774093 = sum of:
    0.009988121 = product of:
      0.039952483 = sum of:
        0.039952483 = weight(_text_:based in 2826) [ClassicSimilarity], result of:
          0.039952483 = score(doc=2826,freq=4.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.28246817 = fieldWeight in 2826, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.046875 = fieldNorm(doc=2826)
      0.25 = coord(1/4)
    0.06775281 = weight(_text_:term in 2826) [ClassicSimilarity], result of:
      0.06775281 = score(doc=2826,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.309317 = fieldWeight in 2826, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.046875 = fieldNorm(doc=2826)
  0.5 = coord(2/4)
    Abstract
    This paper is aimed at assessing the potential of interoperable knowledge organization systems to respond to search strategies in order to retrieve information from databases in the areas of health and biomedicine. An analysis was done on the semantic consistency of synonym grouping of a term selected from the Metathesaurus, the Unified Medical Language System of the National Library of Medicine, based on the characteristics of equivalence proposed in ISO 25964: 2: 2011 and based on the following categories: semantic, morphological, syntactic and typographical variations. This paper highlights the importance of understanding the results of automatic mapping as well as the need for characterization, evaluation and selection of equivalences for preparation of consistent search strategies and presentation of search results in scientific work methodologies.
  6. Li, K.W.; Yang, C.C.: Automatic crosslingual thesaurus generated from the Hong Kong SAR Police Department Web Corpus for Crime Analysis (2005) 0.04 
    0.036016613 = product of:
  0.07203323 = sum of:
    0.008155267 = product of:
      0.032621067 = sum of:
        0.032621067 = weight(_text_:based in 3391) [ClassicSimilarity], result of:
          0.032621067 = score(doc=3391,freq=6.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.2306343 = fieldWeight in 3391, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.03125 = fieldNorm(doc=3391)
      0.25 = coord(1/4)
    0.06387796 = weight(_text_:term in 3391) [ClassicSimilarity], result of:
      0.06387796 = score(doc=3391,freq=4.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.29162687 = fieldWeight in 3391, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.03125 = fieldNorm(doc=3391)
  0.5 = coord(2/4)
    Abstract
    For the sake of national security, very large volumes of data and information are generated and gathered daily. Much of this data and information is written in different languages, stored in different locations, and may be seemingly unconnected. Crosslingual semantic interoperability is a major challenge to generate an overview of this disparate data and information so that it can be analyzed, shared, searched, and summarized. The recent terrorist attacks and the tragic events of September 11, 2001 have prompted increased attention an national security and criminal analysis. Many Asian countries and cities, such as Japan, Taiwan, and Singapore, have been advised that they may become the next targets of terrorist attacks. Semantic interoperability has been a focus in digital library research. Traditional information retrieval (IR) approaches normally require a document to share some common keywords with the query. Generating the associations for the related terms between the two term spaces of users and documents is an important issue. The problem can be viewed as the creation of a thesaurus. Apart from this, terrorists and criminals may communicate through letters, e-mails, and faxes in languages other than English. The translation ambiguity significantly exacerbates the retrieval problem. The problem is expanded to crosslingual semantic interoperability. In this paper, we focus an the English/Chinese crosslingual semantic interoperability problem. However, the developed techniques are not limited to English and Chinese languages but can be applied to many other languages. English and Chinese are popular languages in the Asian region. Much information about national security or crime is communicated in these languages. An efficient automatically generated thesaurus between these languages is important to crosslingual information retrieval between English and Chinese languages. To facilitate crosslingual information retrieval, a corpus-based approach uses the term co-occurrence statistics in parallel or comparable corpora to construct a statistical translation model to cross the language boundary. In this paper, the text based approach to align English/Chinese Hong Kong Police press release documents from the Web is first presented. We also introduce an algorithmic approach to generate a robust knowledge base based an statistical correlation analysis of the semantics (knowledge) embedded in the bilingual press release corpus. The research output consisted of a thesaurus-like, semantic network knowledge base, which can aid in semanticsbased crosslingual information management and retrieval.
  7. Metadata and semantics research : 8th Research Conference, MTSR 2014, Karlsruhe, Germany, November 27-29, 2014, Proceedings (2014) 0.03 
    0.032109328 = product of:
  0.064218655 = sum of:
    0.008323434 = product of:
      0.033293735 = sum of:
        0.033293735 = weight(_text_:based in 2192) [ClassicSimilarity], result of:
          0.033293735 = score(doc=2192,freq=4.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.23539014 = fieldWeight in 2192, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2192)
      0.25 = coord(1/4)
    0.055895224 = product of:
      0.11179045 = sum of:
        0.11179045 = weight(_text_:assessment in 2192) [ClassicSimilarity], result of:
          0.11179045 = score(doc=2192,freq=4.0), product of:
            0.25917634 = queryWeight, product of:
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.04694356 = queryNorm
            0.43132967 = fieldWeight in 2192, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2192)
      0.5 = coord(1/2)
  0.5 = coord(2/4)
    Abstract
    This book constitutes the refereed proceedings of the 8th Metadata and Semantics Research Conference, MTSR 2014, held in Karlsruhe, Germany, in November 2014. The 23 full papers and 9 short papers presented were carefully reviewed and selected from 57 submissions. The papers are organized in several sessions and tracks. They cover the following topics: metadata and linked data: tools and models; (meta) data quality assessment and curation; semantic interoperability, ontology-based data access and representation; big data and digital libraries in health, science and technology; metadata and semantics for open repositories, research information systems and data infrastructure; metadata and semantics for cultural collections and applications; semantics for agriculture, food and environment.
    Content
    Metadata and linked data.- Tools and models.- (Meta)data quality assessment and curation.- Semantic interoperability, ontology-based data access and representation.- Big data and digital libraries in health, science and technology.- Metadata and semantics for open repositories, research information systems and data infrastructure.- Metadata and semantics for cultural collections and applications.- Semantics for agriculture, food and environment.
  8. Bean, C.A.: Hierarchical relationships used in mapping between knowledge structures (2006) 0.03 
    0.027946608 = product of:
  0.11178643 = sum of:
    0.11178643 = weight(_text_:term in 5866) [ClassicSimilarity], result of:
      0.11178643 = score(doc=5866,freq=4.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.510347 = fieldWeight in 5866, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5866)
  0.25 = coord(1/4)
    Abstract
    User-designated Broader-Narrower Term pairs were analyzed to better characterize the nature and structure of the relationships between the pair members, previously determined by experts to be hierarchical in nature. Semantic analysis revealed that almost three-quarters (72%) of the term pairs were characterized as is-a (-kind-of) relationships and the rest (28%) as part-whole relationships. Four basic patterns of syntactic specification were observed. Implications of the findings for mapping strategies are discussed.
  9. Tudhope, D.; Binding, C.: Toward terminology services : experiences with a pilot Web service thesaurus browser (2006) 0.03 
    0.027292717 = product of:
  0.054585434 = sum of:
    0.009416891 = product of:
      0.037667565 = sum of:
        0.037667565 = weight(_text_:based in 1955) [ClassicSimilarity], result of:
          0.037667565 = score(doc=1955,freq=8.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.26631355 = fieldWeight in 1955, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.03125 = fieldNorm(doc=1955)
      0.25 = coord(1/4)
    0.04516854 = weight(_text_:term in 1955) [ClassicSimilarity], result of:
      0.04516854 = score(doc=1955,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.20621133 = fieldWeight in 1955, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.03125 = fieldNorm(doc=1955)
  0.5 = coord(2/4)
    Abstract
    Dublin Core recommends controlled terminology for the subject of a resource. Knowledge organization systems (KOS), such as classifications, gazetteers, taxonomies and thesauri, provide controlled vocabularies that organize and structure concepts for indexing, classifying, browsing and search. For example, a thesaurus employs a set of standard semantic relationships (ISO 2788, ISO 5964), and major thesauri have a large entry vocabulary of terms considered equivalent for retrieval purposes. Many KOS have been made available for Web-based access. However, they are often not fully integrated into indexing and search systems and the full potential for networked and programmatic access remains untapped. The lack of standardized access and interchange formats impedes wider use of KOS resources. We developed a Web demonstrator (www.comp.glam.ac.uk/~FACET/webdemo/) for the FACET project (www.comp.glam.ac.uk/~facet/facetproject.html) that explored thesaurus-based query expansion with the Getty Art and Architecture Thesaurus. A Web demonstrator was implemented via Active Server Pages (ASP) with server-side scripting and compiled server-side components for database access, and cascading style sheets for presentation. The browser-based interactive interface permits dynamic control of query term expansion. However, being based on a custom thesaurus representation and API, the techniques cannot be applied directly to thesauri in other formats on the Web. General programmatic access requires commonly agreed protocols, for example, building on Web and Grid services. The development of common KOS representation formats and service protocols are closely linked. Linda Hill and colleagues argued in 2002 for a general KOS service protocol from which protocols for specific types of KOS can be derived. Thus, in the future, a combination of thesaurus and query protocols might permit a thesaurus to be used with a choice of search tools on various kinds of databases. Service-oriented architectures bring an opportunity for moving toward a clearer separation of interface components from the underlying data sources. In our view, basing distributed protocol services on the atomic elements of thesaurus data structures and relationships is not necessarily the best approach because client operations that require multiple client-server calls would carry too much overhead. This would limit the interfaces that could be offered by applications following such a protocol. Advanced interactive interfaces require protocols that group primitive thesaurus data elements (via their relationships) into composites to achieve reasonable response.
  10. Krause, J.: Shell Model, Semantic Web and Web Information Retrieval (2006) 0.02 
    0.022704724 = product of:
  0.04540945 = sum of:
    0.005885557 = product of:
      0.023542227 = sum of:
        0.023542227 = weight(_text_:based in 6061) [ClassicSimilarity], result of:
          0.023542227 = score(doc=6061,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.16644597 = fieldWeight in 6061, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0390625 = fieldNorm(doc=6061)
      0.25 = coord(1/4)
    0.039523892 = product of:
      0.079047784 = sum of:
        0.079047784 = weight(_text_:assessment in 6061) [ClassicSimilarity], result of:
          0.079047784 = score(doc=6061,freq=2.0), product of:
            0.25917634 = queryWeight, product of:
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.04694356 = queryNorm
            0.30499613 = fieldWeight in 6061, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.52102 = idf(docFreq=480, maxDocs=44218)
              0.0390625 = fieldNorm(doc=6061)
      0.5 = coord(1/2)
  0.5 = coord(2/4)
    Abstract
    The middle of the 1990s are coined by the increased enthusiasm for the possibilities of the WWW, which has only recently deviated - at least in relation to scientific information - for the differentiated measuring of its advantages and disadvantages. Web Information Retrieval originated as a specialized discipline with great commercial significance (for an overview see Lewandowski 2005). Besides the new technological structure that enables the indexing and searching (in seconds) of unimaginable amounts of data worldwide, new assessment processes for the ranking of search results are being developed, which use the link structures of the Web. They are the main innovation with respect to the traditional "mother discipline" of Information Retrieval. From the beginning, link structures of Web pages are applied to commercial search engines in a wide array of variations. From the perspective of scientific information, link topology based approaches were in essence trying to solve a self-created problem: on the one hand, it quickly became clear that the openness of the Web led to an up-tonow unknown increase in available information, but this also caused the quality of the Web pages searched to become a problem - and with it the relevance of the results. The gatekeeper function of traditional information providers, which narrows down every user query to focus on high-quality sources was lacking. Therefore, the recognition of the "authoritativeness" of the Web pages by general search engines such as Google was one of the most important factors for their success.
  11. Mayr, P.; Mutschke, P.; Petras, V.: Reducing semantic complexity in distributed digital libraries : Treatment of term vagueness and document re-ranking (2008) 0.02 
    0.019961866 = product of:
  0.07984746 = sum of:
    0.07984746 = weight(_text_:term in 1909) [ClassicSimilarity], result of:
      0.07984746 = score(doc=1909,freq=4.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.3645336 = fieldWeight in 1909, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1909)
  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.
  12. Mayr, P.; Walter, A.-K.: Zum Stand der Heterogenitätsbehandlung in vascoda : Bestandsaufnahme und Ausblick (2007) 0.02 
    0.019761236 = product of:
  0.079044946 = sum of:
    0.079044946 = weight(_text_:term in 59) [ClassicSimilarity], result of:
      0.079044946 = score(doc=59,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.36086982 = fieldWeight in 59, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0546875 = fieldNorm(doc=59)
  0.25 = coord(1/4)
    Abstract
    Der Beitrag stellt das Verfahren zur Erstellung von Crosskonkordanzen (CK) im Projekt "Kompetenznetzwerk Modellbildung und Heterogenitätsbehandlung" (KoMoHe)1 sowie das Netz der bis dato entstandenen Terminologie-Überstiege vor. Neben CK zwischen Indexierungssprachen innerhalb eines Anwendungsgebiets (z.B. Sozial- und Politikwissenschaften), werden Termbeispiele vorgestellt, die Fächer unterschiedlicher Fachgebiete verknüpfen. Es werden weiterhin typische Einsatzszenarien der CK innerhalb von Informationssystemen präsentiert. Die am IZ entstandenen CK sollen künftig über einen Terminologie-Service als Web Service genutzt werden. Der sog. Heterogenitätsservice, der als Term-Umschlüsselungs-Dienst fungieren soll, wird exemplarisch anhand konkreter Fragestellungen vorgeführt.
  13. Vetere, G.; Lenzerini, M.: Models for semantic interoperability in service-oriented architectures (2005) 0.02 
    0.016309742 = product of:
  0.06523897 = sum of:
    0.06523897 = product of:
      0.26095587 = sum of:
        0.26095587 = weight(_text_:3a in 306) [ClassicSimilarity], result of:
          0.26095587 = score(doc=306,freq=2.0), product of:
            0.39798802 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.04694356 = 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)
      0.25 = coord(1/4)
  0.25 = coord(1/4)
    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.
  14. Golub, K.; Tudhope, D.; Zeng, M.L.; Zumer, M.: Terminology registries for knowledge organization systems : functionality, use, and attributes (2014) 0.02 
    0.015656754 = product of:
  0.03131351 = sum of:
    0.0122329 = product of:
      0.0489316 = sum of:
        0.0489316 = weight(_text_:based in 1347) [ClassicSimilarity], result of:
          0.0489316 = score(doc=1347,freq=6.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.34595144 = fieldWeight in 1347, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.046875 = fieldNorm(doc=1347)
      0.25 = coord(1/4)
    0.019080611 = product of:
      0.038161222 = sum of:
        0.038161222 = weight(_text_:22 in 1347) [ClassicSimilarity], result of:
          0.038161222 = score(doc=1347,freq=2.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.23214069 = fieldWeight in 1347, 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=1347)
      0.5 = coord(1/2)
  0.5 = coord(2/4)
    Abstract
    Terminology registries (TRs) are a crucial element of the infrastructure required for resource discovery services, digital libraries, Linked Data, and semantic interoperability generally. They can make the content of knowledge organization systems (KOS) available both for human and machine access. The paper describes the attributes and functionality for a TR, based on a review of published literature, existing TRs, and a survey of experts. A domain model based on user tasks is constructed and a set of core metadata elements for use in TRs is proposed. Ideally, the TR should allow searching as well as browsing for a KOS, matching a user's search while also providing information about existing terminology services, accessible to both humans and machines. The issues surrounding metadata for KOS are also discussed, together with the rationale for different aspects and the importance of a core set of KOS metadata for future machine-based access; a possible core set of metadata elements is proposed. This is dealt with in terms of practical experience and in relation to the Dublin Core Application Profile.
    Date
    22. 8.2014 17:12:54
  15. Candela, G.: ¬An automatic data quality approach to assess semantic data from cultural heritage institutions (2023) 0.02 
    0.015250247 = product of:
  0.030500494 = sum of:
    0.00823978 = product of:
      0.03295912 = sum of:
        0.03295912 = weight(_text_:based in 997) [ClassicSimilarity], result of:
          0.03295912 = score(doc=997,freq=2.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.23302436 = fieldWeight in 997, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0546875 = fieldNorm(doc=997)
      0.25 = coord(1/4)
    0.022260714 = product of:
      0.04452143 = sum of:
        0.04452143 = weight(_text_:22 in 997) [ClassicSimilarity], result of:
          0.04452143 = score(doc=997,freq=2.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.2708308 = fieldWeight in 997, 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=997)
      0.5 = coord(1/2)
  0.5 = coord(2/4)
    Abstract
    In recent years, cultural heritage institutions have been exploring the benefits of applying Linked Open Data to their catalogs and digital materials. Innovative and creative methods have emerged to publish and reuse digital contents to promote computational access, such as the concepts of Labs and Collections as Data. Data quality has become a requirement for researchers and training methods based on artificial intelligence and machine learning. This article explores how the quality of Linked Open Data made available by cultural heritage institutions can be automatically assessed. The results obtained can be useful for other institutions who wish to publish and assess their collections.
    Date
    22. 6.2023 18:23:31
  16. Ahn, J.-w.; Soergel, D.; Lin, X.; Zhang, M.: Mapping between ARTstor terms and the Getty Art and Architecture Thesaurus (2014) 0.01 
    0.014534365 = product of:
  0.02906873 = sum of:
    0.009988121 = product of:
      0.039952483 = sum of:
        0.039952483 = weight(_text_:based in 1421) [ClassicSimilarity], result of:
          0.039952483 = score(doc=1421,freq=4.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.28246817 = fieldWeight in 1421, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.046875 = fieldNorm(doc=1421)
      0.25 = coord(1/4)
    0.019080611 = product of:
      0.038161222 = sum of:
        0.038161222 = weight(_text_:22 in 1421) [ClassicSimilarity], result of:
          0.038161222 = score(doc=1421,freq=2.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.23214069 = fieldWeight in 1421, 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=1421)
      0.5 = coord(1/2)
  0.5 = coord(2/4)
    Abstract
    To make better use of knowledge organization systems (KOS) for query expansion, we have developed a pattern-based technique for composition ontology mapping in a specific domain. The technique was tested in a two-step mapping. The user's free-text queries were first mapped to Getty's Art & Architecture Thesaurus (AAT) terms. The AAT-based queries were then mapped to a search engine's indexing vocabulary (ARTstor terms). The result indicated that our technique has improved the mapping success rate from 40% to 70%. We discuss also how the technique may be applied to other KOS mapping and how it may be implemented in practical systems.
    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
  17. Golub, K.: Subject access in Swedish discovery services (2018) 0.01 
    0.014115169 = product of:
  0.056460675 = sum of:
    0.056460675 = weight(_text_:term in 4379) [ClassicSimilarity], result of:
      0.056460675 = score(doc=4379,freq=2.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.25776416 = fieldWeight in 4379, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4379)
  0.25 = coord(1/4)
    Abstract
    While support for subject searching has been traditionally advocated for in library catalogs, often in the form of a catalog objective to find everything that a library has on a certain topic, research has shown that subject access has not been satisfactory. Many existing online catalogs and discovery services do not seem to make good use of the intellectual effort invested into assigning controlled subject index terms and classes. For example, few support hierarchical browsing of classification schemes and other controlled vocabularies with hierarchical structures, few provide end-user-friendly options to choose a more specific concept to increase precision, a broader concept or related concepts to increase recall, to disambiguate homonyms, or to find which term is best used to name a concept. Optimum subject access in library catalogs and discovery services is analyzed from the perspective of earlier research as well as contemporary conceptual models and cataloguing codes. Eighteen proposed features of what this should entail in practice are drawn. In an exploratory qualitative study, the three most common discovery services used in Swedish academic libraries are analyzed against these features. In line with previous research, subject access in contemporary interfaces is demonstrated to less than optimal. This is in spite of the fact that individual collections have been indexed with controlled vocabularies and a significant number of controlled vocabularies have been mapped to each other and are available in interoperable standards. Strategic action is proposed to build research-informed (inter)national standards and guidelines.
  18. Dunsire, G.; Nicholson, D.: Signposting the crossroads : terminology Web services and classification-based interoperability (2010) 0.01 
    0.013835812 = product of:
  0.027671624 = sum of:
    0.011771114 = product of:
      0.047084454 = sum of:
        0.047084454 = weight(_text_:based in 4066) [ClassicSimilarity], result of:
          0.047084454 = score(doc=4066,freq=8.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.33289194 = fieldWeight in 4066, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4066)
      0.25 = coord(1/4)
    0.015900511 = product of:
      0.031801023 = sum of:
        0.031801023 = weight(_text_:22 in 4066) [ClassicSimilarity], result of:
          0.031801023 = score(doc=4066,freq=2.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = queryNorm
            0.19345059 = fieldWeight in 4066, 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=4066)
      0.5 = coord(1/2)
  0.5 = coord(2/4)
    Abstract
    The focus of this paper is the provision of terminology- and classification-based terminologies interoperability data via web services, initially using interoperability data based on the use of a Dewey Decimal Classification (DDC) spine, but with an aim to explore other possibilities in time, including the use of other spines. The High-Level Thesaurus Project (HILT) Phase IV developed pilot web services based on SRW/U, SOAP, and SKOS to deliver machine-readable terminology and crossterminology mappings data likely to be useful to information services wishing to enhance their subject search or browse services. It also developed an associated toolkit to help information services technical staff to embed HILT-related functionality within service interfaces. Several UK information services have created illustrative user interface enhancements using HILT functionality and these will demonstrate what is possible. HILT currently has the following subject schemes mounted and available: DDC, CAB, GCMD, HASSET, IPSV, LCSH, MeSH, NMR, SCAS, UNESCO, and AAT. It also has high level mappings between some of these schemes and DDC and some deeper pilot mappings available.
    Date
    6. 1.2011 19:22:48
  19. Si, L.E.; O'Brien, A.; Probets, S.: Integration of distributed terminology resources to facilitate subject cross-browsing for library portal systems (2009) 0.01 
    0.012111973 = product of:
  0.024223946 = sum of:
    0.008323434 = product of:
      0.033293735 = sum of:
        0.033293735 = weight(_text_:based in 3628) [ClassicSimilarity], result of:
          0.033293735 = score(doc=3628,freq=4.0), product of:
            0.14144066 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.04694356 = queryNorm
            0.23539014 = fieldWeight in 3628, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3628)
      0.25 = coord(1/4)
    0.015900511 = product of:
      0.031801023 = sum of:
        0.031801023 = weight(_text_:22 in 3628) [ClassicSimilarity], result of:
          0.031801023 = score(doc=3628,freq=2.0), product of:
            0.16438834 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04694356 = 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)
  0.5 = coord(2/4)
    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.
  20. Fiala, S.: Deutscher Bibliothekartag Leipzig 2007 : Sacherschließung - Informationsdienstleistung nach Mass (2007) 0.01 
    0.011977118 = product of:
  0.047908474 = sum of:
    0.047908474 = weight(_text_:term in 415) [ClassicSimilarity], result of:
      0.047908474 = score(doc=415,freq=4.0), product of:
        0.21904005 = queryWeight, product of:
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.04694356 = queryNorm
        0.21872015 = fieldWeight in 415, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.66603 = idf(docFreq=1130, maxDocs=44218)
          0.0234375 = fieldNorm(doc=415)
  0.25 = coord(1/4)
    Content
    ""Sacherschließung - Informationsdienstleistung nach Maß": unter diesem Titel fand am 3. Leipziger Kongress für Information und Bibliothek ("Information und Ethik") eine sehr aufschlussreiche Vortragsreihe statt. Neue Projekte der Vernetzung unterschiedlichst erschlossener Bestände wurden vorgestellt. Auch die Frage, inwieweit man die Nutzerinnen und Nutzer in die Erschließung einbinden kann, wurde behandelt. Die Arbeit der Bibliothekare kann wertvolle Ausgangssituationen für alternative Methoden bieten. Das Zusammenwirken von intellektueller und maschineller Erschließung wird in Zukunft eine große Rolle spielen. Ein Ausweg, um die Erschließung der ständig wachsenden Informationsquellen zu ermöglichen, könnte eine arbeitsteilige Erschließung und eine Kooperation mit anderen Informationseinrichtungen darstellen. Im Mittelpunkt all dieser Überlegungen standen die Heterogenitätsprobleme, die sich durch unterschiedliche Erschließungsregeln, verschiedene Arbeitsinstrumente, verschiedene Sprachen und durch die unterschiedliche Bedeutung der Begriffe ergeben können. Der Nachmittag begann mit einem konkreten Beispiel: "Zum Stand der Heterogenitätsbehandlung in vascoda" (Philipp Mayr, Bonn und Anne-Kathrin Walter, Bonn). Das Wissenschaftsportal vascoda beinhaltet verschiedene Fachportale, und es kann entweder interdisziplinär oder fachspezifisch gesucht werden. Durch die verschiedenen Informationsangebote, die in einem Fachportal vorhanden sind und die in dem Wissenschaftsportal vascoda zusammengefasst sind, entsteht semantische Heterogenität. Oberstes Ziel ist somit die Heterogenitätsbehandlung. Die Erstellung von Crosskonkordanzen (zwischen Indexierungssprachen innerhalb eines Fachgebiets und zwischen Indexierungssprachen unterschiedlicher Fachgebiete) und dem sogenannten Heterogenitätsservice (Term-Umschlüsselungs-Dienst) wurden anhand dieses Wissenschaftsportals vorgestellt. "Crosskonkordanzen sind gerichtete, relevanzbewertete Relationen zwischen Termen zweier Thesauri, Klassifikationen oder auch anderer kontrollierter Vokabulare." Im Heterogenitätsservice soll die Suchanfrage so transformiert werden, dass sie alle relevanten Dokumente in den verschiedenen Datenbanken erreicht. Bei der Evaluierung der Crosskonkordanzen stellt sich die Frage der Zielgenauigkeit der Relationen, sowie die Frage nach der Relevanz der durch die Crosskonkordanz zusätzlich gefundenen Treffer. Drei Schritte der Evaluation werden durchgeführt: Zum einen mit natürlicher Sprache in der Freitextsuche, dann übersetzt in Deskriptoren in der Schlagwortsuche und zuletzt mit Deskriptoren in der Schlagwortsuche mit Einsatz der Crosskonkordanzen. Im Laufe des Sommers werden erste Ergebnisse der Evaluation der Crosskonkordanzen erwartet.
    Einen anderen sehr interessanten Ansatz bot der nächste Vortrag mit dem Titel: "Navigieren zwischen Schlagwort und Notation - Crisscross als Verbindung zwischen SWD und DDC" (Helga Karg, Frankfurt am Main und Guido Bee, Frankfurt am Main). Das Projekt Crisscross versucht durch Verbindung von SWD, LCSH, Rameau und DDC ein benutzergerechtes, multilinguales und thesaurusbasiertes Recherchevokabular zu erstellen. Es wurde eine Konkordanz zwischen SWD, LCSH und Rameau (Projekt MACS) erstellt und in den SWD-Sachschlagwörtern die DDCNotationen vermerkt. Durch die Angabe der Determiniertheit in der SWD kann zwischen "wesentlicher Übereinstimmung von SWD-Term und DDCKlasse", "SWD-Begriff spezifischer als die DDC-Klasse" und SWD-Begriff sowohl "nicht auf einen bestimmten Kontext beschränkt" als auch "SWDBegriff quer zur DDC-Hierarchie" unterschieden werden (siehe auch: Anzeige in MelviIClass).

Authors

Years

Languages

  • e 116
  • d 14

Types

  • a 83
  • el 48
  • m 6
  • x 5
  • s 4
  • r 3
  • p 2
  • More… Less…

Themes

Subjects

Classifications