Search (1 results, page 1 of 1)

  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  • × author_ss:"Sanderson, M."
  1. Sanderson, M.; Lawrie, D.: Building, testing, and applying concept hierarchies (2000) 0.02
    0.019540602 = product of:
      0.039081205 = sum of:
        0.017839102 = weight(_text_:information in 37) [ClassicSimilarity], result of:
          0.017839102 = score(doc=37,freq=6.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.20156369 = fieldWeight in 37, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046875 = fieldNorm(doc=37)
        0.021242103 = product of:
          0.042484205 = sum of:
            0.042484205 = weight(_text_:organization in 37) [ClassicSimilarity], result of:
              0.042484205 = score(doc=37,freq=2.0), product of:
                0.17974974 = queryWeight, product of:
                  3.5653565 = idf(docFreq=3399, maxDocs=44218)
                  0.050415643 = queryNorm
                0.23635197 = fieldWeight in 37, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5653565 = idf(docFreq=3399, maxDocs=44218)
                  0.046875 = fieldNorm(doc=37)
          0.5 = coord(1/2)
      0.5 = coord(2/4)
    
    Abstract
    A means of automatically deriving a hierarchical organization of concepts from a set of documents without use of training data or standard clustering techniques is presented. Using a process that extracts salient words and phrases from the documents, these terms are organized hierarchically using a type of co-occurrence known as subsumption. The resulting structure is displayed as a series of hierarchical menus. When generated from a set of retrieved documents, a user browsing the menus gains an overview of their content in a manner distinct from existing techniques. The methods used to build the structure are simple and appear to be effective. The formation and presentation of the hierarchy is described along with a study of some of its properties, including a preliminary experiment, which indicates that users may find the hierarchy a more efficient means of locating relevant documents than the classic method of scanning a ranked document list
    Series
    The Kluwer international series on information retrieval; 7
    Source
    Advances in information retrieval: Recent research from the Center for Intelligent Information Retrieval. Ed.: W.B. Croft