Search (11 results, page 1 of 1)

  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  • × year_i:[1990 TO 2000}
  1. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996) 0.05 
    0.052782446 = product of:
  0.15834734 = sum of:
    0.15834734 = sum of:
      0.11093006 = weight(_text_:reports in 6958) [ClassicSimilarity], result of:
        0.11093006 = score(doc=6958,freq=4.0), product of:
          0.2251839 = queryWeight, product of:
            4.503953 = idf(docFreq=1329, maxDocs=44218)
            0.04999695 = queryNorm
          0.49261987 = fieldWeight in 6958, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.503953 = idf(docFreq=1329, maxDocs=44218)
            0.0546875 = fieldNorm(doc=6958)
      0.047417276 = weight(_text_:22 in 6958) [ClassicSimilarity], result of:
        0.047417276 = score(doc=6958,freq=2.0), product of:
          0.1750808 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.04999695 = queryNorm
          0.2708308 = fieldWeight in 6958, 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=6958)
  0.33333334 = coord(1/3)
    Abstract
    Reports on the design of a GUI for the Okapi 'best match' retrieval system developed at the Centre for Interactive Systems Research, City University, UK, for online library catalogues. The X-Windows interface includes an interactive query expansion (IQE) facilty which involves the user in the selection of query terms to reformulate a search. Presents the design rationale, based on a game board metaphor, and describes the features of each of the stages of the search interaction. Reports on the early operational field trial and discusses relevant evaluation issues and objectives
    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
  2. Spiteri, L.F.: ¬The essential elements of faceted thesauri (1999) 0.02 
    0.024293613 = product of:
  0.072880834 = sum of:
    0.072880834 = weight(_text_:citation in 5362) [ClassicSimilarity], result of:
      0.072880834 = score(doc=5362,freq=2.0), product of:
        0.23445003 = queryWeight, product of:
          4.6892867 = idf(docFreq=1104, maxDocs=44218)
          0.04999695 = queryNorm
        0.31085873 = fieldWeight in 5362, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.6892867 = idf(docFreq=1104, maxDocs=44218)
          0.046875 = fieldNorm(doc=5362)
  0.33333334 = coord(1/3)
    Abstract
    The goal of this study is to evaluate, compare, and contrast how facet analysis is used to construct the systematic or faceted displays of a selection of information retrieval thesauri. More specifically, the study seeks to examine which principles of facet analysis are used in the thesauri, and the extent to which different thesauri apply these principles in the same way. A measuring instrument was designed for the purpose of evaluating the structure of faceted thesauri. This instrument was applied to fourteen faceted information retrieval thesauri. The study reveals that the thesauri do not share a common definition of what constitutes a facet. In some cases, the thesauri apply both enumerative-style classification and facet analysis to arrange their indexing terms. A number of the facets used in the thesauri are not homogeneous or mutually exclusive. The principle of synthesis is used in only 50% of the thesauri, and no one citation order is used consistently by the thesauri.
  3. Ekmekcioglu, F.C.; Robertson, A.M.; Willett, P.: Effectiveness of query expansion in ranked-output document retrieval systems (1992) 0.01 
    0.014940838 = product of:
  0.044822514 = sum of:
    0.044822514 = product of:
      0.08964503 = sum of:
        0.08964503 = weight(_text_:reports in 5689) [ClassicSimilarity], result of:
          0.08964503 = score(doc=5689,freq=2.0), product of:
            0.2251839 = queryWeight, product of:
              4.503953 = idf(docFreq=1329, maxDocs=44218)
              0.04999695 = queryNorm
            0.39809695 = fieldWeight in 5689, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.503953 = idf(docFreq=1329, maxDocs=44218)
              0.0625 = fieldNorm(doc=5689)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    Reports an evaluation of 3 methods for the expansion of natural language queries in ranked output retrieval systems. The methods are based on term co-occurrence data, on Soundex codes, and on a string similarity measure. Searches for 110 queries in a data base of 26.280 titles and abstracts suggest that there is no significant difference in retrieval effectiveness between any of these methods and unexpanded searches
  4. Robertson, S.E.: OKAPI at TREC-3 (1995) 0.01 
    0.013073232 = product of:
  0.039219696 = sum of:
    0.039219696 = product of:
      0.07843939 = sum of:
        0.07843939 = weight(_text_:reports in 5694) [ClassicSimilarity], result of:
          0.07843939 = score(doc=5694,freq=2.0), product of:
            0.2251839 = queryWeight, product of:
              4.503953 = idf(docFreq=1329, maxDocs=44218)
              0.04999695 = queryNorm
            0.34833482 = fieldWeight in 5694, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.503953 = idf(docFreq=1329, maxDocs=44218)
              0.0546875 = fieldNorm(doc=5694)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    Reports text information retrieval experiments performed as part of the 3 rd round of Text Retrieval Conferences (TREC) using the Okapi online catalogue system at City University, UK. The emphasis in TREC-3 was: further refinement of term weighting functions; an investigation of run time passage determination and searching; expansion of ad hoc queries by terms extracted from the top documents retrieved by a trial search; new methods for choosing query expansion terms after relevance feedback, now split into methods of ranking terms prior to selection and subsequent selection procedures; and the development of a user interface procedure within the new TREC interactive search framework
  5. Ihadjadene, M.; Bouché, R.: Using syntagmatic relationships based on a RAMEAU list as a browsing relevance feedback strategy in a WWW-OPAC (1998) 0.01 
    0.013073232 = product of:
  0.039219696 = sum of:
    0.039219696 = product of:
      0.07843939 = sum of:
        0.07843939 = weight(_text_:reports in 141) [ClassicSimilarity], result of:
          0.07843939 = score(doc=141,freq=2.0), product of:
            0.2251839 = queryWeight, product of:
              4.503953 = idf(docFreq=1329, maxDocs=44218)
              0.04999695 = queryNorm
            0.34833482 = fieldWeight in 141, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.503953 = idf(docFreq=1329, maxDocs=44218)
              0.0546875 = fieldNorm(doc=141)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    This paper reports on an evaluation of the browsing behaviour of end users of a WWW-OPAC focussing on the browsing relevance feedback (BRF) strategy. Results of this study reveal that BRF is a popular strategy. We also find that the relationships involved in the BRF strategy are generally syntagmatic
  6. Chen, H.; Zhang, Y.; Houston, A.L.: Semantic indexing and searching using a Hopfield net (1998) 0.01 
    0.0112056285 = product of:
  0.033616886 = sum of:
    0.033616886 = product of:
      0.06723377 = sum of:
        0.06723377 = weight(_text_:reports in 5704) [ClassicSimilarity], result of:
          0.06723377 = score(doc=5704,freq=2.0), product of:
            0.2251839 = queryWeight, product of:
              4.503953 = idf(docFreq=1329, maxDocs=44218)
              0.04999695 = queryNorm
            0.29857272 = fieldWeight in 5704, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.503953 = idf(docFreq=1329, maxDocs=44218)
              0.046875 = fieldNorm(doc=5704)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Abstract
    Presents a neural network approach to document semantic indexing. Reports results of a study to apply a Hopfield net algorithm to simulate human associative memory for concept exploration in the domain of computer science and engineering. The INSPEC database, consisting of 320.000 abstracts from leading periodical articles was used as the document test bed. Benchmark tests conformed that 3 parameters: maximum number of activated nodes; maximum allowable error; and maximum number of iterations; were useful in positively influencing network convergence behaviour without negatively impacting central processing unit performance. Another series of benchmark tests was performed to determine the effectiveness of various filtering techniques in reducing the negative impact of noisy input terms. Preliminary user tests conformed expectations that the Hopfield net is potentially useful as an associative memory technique to improve document recall and precision by solving discrepancies between indexer vocabularies and end user vocabularies
  7. Efthimiadis, E.N.: End-users' understanding of thesaural knowledge structures in interactive query expansion (1994) 0.01 
    0.009031862 = product of:
  0.027095586 = sum of:
    0.027095586 = product of:
      0.054191172 = sum of:
        0.054191172 = weight(_text_:22 in 5693) [ClassicSimilarity], result of:
          0.054191172 = score(doc=5693,freq=2.0), product of:
            0.1750808 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04999695 = queryNorm
            0.30952093 = fieldWeight in 5693, 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=5693)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Date
    30. 3.2001 13:35:22
  8. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.01 
    0.007902879 = product of:
  0.023708638 = sum of:
    0.023708638 = product of:
      0.047417276 = sum of:
        0.047417276 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
          0.047417276 = score(doc=1319,freq=2.0), product of:
            0.1750808 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04999695 = queryNorm
            0.2708308 = fieldWeight in 1319, 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=1319)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Date
    1. 8.1996 22:08:06
  9. Lund, K.; Burgess, C.; Atchley, R.A.: Semantic and associative priming in high-dimensional semantic space (1995) 0.01 
    0.007902879 = product of:
  0.023708638 = sum of:
    0.023708638 = product of:
      0.047417276 = sum of:
        0.047417276 = weight(_text_:22 in 2151) [ClassicSimilarity], result of:
          0.047417276 = score(doc=2151,freq=2.0), product of:
            0.1750808 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04999695 = queryNorm
            0.2708308 = fieldWeight in 2151, 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=2151)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Source
    Proceedings of the Seventeenth Annual Conference of the Cognitive Science Society: July 22 - 25, 1995, University of Pittsburgh / ed. by Johanna D. Moore and Jill Fain Lehmann
  10. Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996) 0.01 
    0.0067738965 = product of:
  0.02032169 = sum of:
    0.02032169 = product of:
      0.04064338 = sum of:
        0.04064338 = weight(_text_:22 in 2230) [ClassicSimilarity], result of:
          0.04064338 = score(doc=2230,freq=2.0), product of:
            0.1750808 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04999695 = queryNorm
            0.23214069 = fieldWeight in 2230, 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=2230)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Source
    Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR '96), Zürich, Switzerland, August 18-22, 1996. Eds.: H.P. Frei et al
  11. Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995) 0.01 
    0.0056449138 = product of:
  0.016934741 = sum of:
    0.016934741 = product of:
      0.033869483 = sum of:
        0.033869483 = weight(_text_:22 in 5697) [ClassicSimilarity], result of:
          0.033869483 = score(doc=5697,freq=2.0), product of:
            0.1750808 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.04999695 = queryNorm
            0.19345059 = fieldWeight in 5697, 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=5697)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)
    Date
    22. 2.1996 13:14:10

Authors

Types

  • a 10
  • p 1

Themes