Search (5 results, page 1 of 1)

  • × type_ss:"el"
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  1. Prieto-Díaz, R.: ¬A faceted approach to building ontologies (2002) 0.03
    0.029657505 = product of:
      0.11863002 = sum of:
        0.11863002 = weight(_text_:objects in 2259) [ClassicSimilarity], result of:
          0.11863002 = score(doc=2259,freq=2.0), product of:
            0.33668926 = queryWeight, product of:
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.06334615 = queryNorm
            0.35234275 = fieldWeight in 2259, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.046875 = fieldNorm(doc=2259)
      0.25 = coord(1/4)
    
    Abstract
    An ontology is "an explicit conceptualization of a domain of discourse, and thus provides a shared and common understanding of the domain." We have been producing ontologies for millennia to understand and explain our rationale and environment. From Plato's philosophical framework to modern day classification systems, ontologies are, in most cases, the product of extensive analysis and categorization. Only recently has the process of building ontologies become a research topic of interest. Today, ontologies are built very much ad-hoc. A terminology is first developed providing a controlled vocabulary for the subject area or domain of interest, then it is organized into a taxonomy where key concepts are identified, and finally these concepts are defined and related to create an ontology. The intent of this paper is to show that domain analysis methods can be used for building ontologies. Domain analysis aims at generic models that represent groups of similar systems within an application domain. In this sense, it deals with categorization of common objects and operations, with clear, unambiguous definitions of them and with defining their relationships.
  2. Schaefer, A.; Jordan, M.; Klas, C.-P.; Fuhr, N.: Active support for query formulation in virtual digital libraries : a case study with DAFFODIL (2005) 0.02
    0.02471459 = product of:
      0.09885836 = sum of:
        0.09885836 = weight(_text_:objects in 4296) [ClassicSimilarity], result of:
          0.09885836 = score(doc=4296,freq=2.0), product of:
            0.33668926 = queryWeight, product of:
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.06334615 = queryNorm
            0.29361898 = fieldWeight in 4296, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.315071 = idf(docFreq=590, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4296)
      0.25 = coord(1/4)
    
    Abstract
    Daffodil is a front-end to federated, heterogeneous digital libraries targeting at strategic support of users during the information seeking process. This is done by offering a variety of functions for searching, exploring and managing digital library objects. However, the distributed search increases response time and the conceptual model of the underlying search processes is inherently weaker. This makes query formulation harder and the resulting waiting times can be frustrating. In this paper, we investigate the concept of proactive support during the user's query formulation. For improving user efficiency and satisfaction, we implemented annotations, proactive support and error markers on the query form itself. These functions decrease the probability for syntactical or semantical errors in queries. Furthermore, the user is able to make better tactical decisions and feels more confident that the system handles the query properly. Evaluations with 30 subjects showed that user satisfaction is improved, whereas no conclusive results were received for efficiency.
  3. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie : Ontologie-basiertes Information-Filtering und -Retrieval mit relationalen Datenbanken (2005) 0.02
    0.015019425 = product of:
      0.0600777 = sum of:
        0.0600777 = weight(_text_:22 in 4324) [ClassicSimilarity], result of:
          0.0600777 = score(doc=4324,freq=2.0), product of:
            0.22182742 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.06334615 = queryNorm
            0.2708308 = fieldWeight in 4324, 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=4324)
      0.25 = coord(1/4)
    
    Date
    11. 2.2011 18:22:25
  4. Bradford, R.B.: Relationship discovery in large text collections using Latent Semantic Indexing (2006) 0.01
    0.008582529 = product of:
      0.034330115 = sum of:
        0.034330115 = weight(_text_:22 in 1163) [ClassicSimilarity], result of:
          0.034330115 = score(doc=1163,freq=2.0), product of:
            0.22182742 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.06334615 = queryNorm
            0.15476047 = fieldWeight in 1163, 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=1163)
      0.25 = coord(1/4)
    
    Source
    Proceedings of the Fourth Workshop on Link Analysis, Counterterrorism, and Security, SIAM Data Mining Conference, Bethesda, MD, 20-22 April, 2006. [http://www.siam.org/meetings/sdm06/workproceed/Link%20Analysis/15.pdf]
  5. Gillitzer, B.: Yewno (2017) 0.01
    0.008582529 = product of:
      0.034330115 = sum of:
        0.034330115 = weight(_text_:22 in 3447) [ClassicSimilarity], result of:
          0.034330115 = score(doc=3447,freq=2.0), product of:
            0.22182742 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.06334615 = queryNorm
            0.15476047 = fieldWeight in 3447, 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=3447)
      0.25 = coord(1/4)
    
    Date
    22. 2.2017 10:16:49