Search (1 results, page 1 of 1)

  • × author_ss:"Welty, C.A."
  • × theme_ss:"Klassifikationssysteme im Online-Retrieval"
  1. Welty, C.A.; Jenkins, J.: Formal ontology for subject (1999) 0.01
    0.005558823 = product of:
      0.038911756 = sum of:
        0.038911756 = weight(_text_:libraries in 4962) [ClassicSimilarity], result of:
          0.038911756 = score(doc=4962,freq=2.0), product of:
            0.13401186 = queryWeight, product of:
              3.2850544 = idf(docFreq=4499, maxDocs=44218)
              0.04079441 = queryNorm
            0.29036054 = fieldWeight in 4962, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2850544 = idf(docFreq=4499, maxDocs=44218)
              0.0625 = fieldNorm(doc=4962)
      0.14285715 = coord(1/7)
    
    Abstract
    Subject based classification is an important part of information retrieval, and has a long history in libraries, where a subject taxonomy was used to determine the location of books on the shelves. We have been studying the notion of subject itself, in order to determine a formal ontology of subject for a large scale digital library card catalog system. Deep analysis reveals a lot of ambiguity regarding the usage of subjects in existing systems and terminology, and we attempt to formalize these notions into a single framework for representing it.