Search (45 results, page 2 of 3)

  • × language_ss:"e"
  • × theme_ss:"Retrievalalgorithmen"
  • × year_i:[2000 TO 2010}
  1. Lalmas, M.: XML retrieval (2009) 0.01
    0.0055418126 = product of:
      0.011083625 = sum of:
        0.011083625 = product of:
          0.02216725 = sum of:
            0.02216725 = weight(_text_:m in 4998) [ClassicSimilarity], result of:
              0.02216725 = score(doc=4998,freq=4.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.19441006 = fieldWeight in 4998, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4998)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    m
  2. Boughanem, M.; Chrisment, C.; Tamine, L.: On using genetic algorithms for multimodal relevance optimization in information retrieval (2002) 0.01
    0.005486114 = product of:
      0.010972228 = sum of:
        0.010972228 = product of:
          0.021944456 = sum of:
            0.021944456 = weight(_text_:m in 1011) [ClassicSimilarity], result of:
              0.021944456 = score(doc=1011,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.19245613 = fieldWeight in 1011, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=1011)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Losee, R.M.; Church Jr., L.: Are two document clusters better than one? : the cluster performance question for information retrieval (2005) 0.01
    0.005486114 = product of:
      0.010972228 = sum of:
        0.010972228 = product of:
          0.021944456 = sum of:
            0.021944456 = weight(_text_:m in 3270) [ClassicSimilarity], result of:
              0.021944456 = score(doc=3270,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.19245613 = fieldWeight in 3270, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3270)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    When do information retrieval systems using two document clusters provide better retrieval performance than systems using no clustering? We answer this question for one set of assumptions and suggest how this may be studied with other assumptions. The "Cluster Hypothesis" asks an empirical question about the relationships between documents and user-supplied relevance judgments, while the "Cluster Performance Question" proposed here focuses an the when and why of information retrieval or digital library performance for clustered and unclustered text databases. This may be generalized to study the relative performance of m versus n clusters.
  4. Vechtomova, O.; Karamuftuoglu, M.: Elicitation and use of relevance feedback information (2006) 0.01
    0.005486114 = product of:
      0.010972228 = sum of:
        0.010972228 = product of:
          0.021944456 = sum of:
            0.021944456 = weight(_text_:m in 966) [ClassicSimilarity], result of:
              0.021944456 = score(doc=966,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.19245613 = fieldWeight in 966, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=966)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  5. Lalmas, M.: XML information retrieval (2009) 0.01
    0.005486114 = product of:
      0.010972228 = sum of:
        0.010972228 = product of:
          0.021944456 = sum of:
            0.021944456 = weight(_text_:m in 3880) [ClassicSimilarity], result of:
              0.021944456 = score(doc=3880,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.19245613 = fieldWeight in 3880, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3880)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  6. García Cumbreras, M.A.; Perea-Ortega, J.M.; García Vega, M.; Ureña López, L.A.: Information retrieval with geographical references : relevant documents filtering vs. query expansion (2009) 0.01
    0.005486114 = product of:
      0.010972228 = sum of:
        0.010972228 = product of:
          0.021944456 = sum of:
            0.021944456 = weight(_text_:m in 4222) [ClassicSimilarity], result of:
              0.021944456 = score(doc=4222,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.19245613 = fieldWeight in 4222, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4222)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  7. Khoo, C.S.G.; Wan, K.-W.: ¬A simple relevancy-ranking strategy for an interface to Boolean OPACs (2004) 0.01
    0.005432097 = product of:
      0.010864194 = sum of:
        0.010864194 = product of:
          0.021728387 = sum of:
            0.021728387 = weight(_text_:22 in 2509) [ClassicSimilarity], result of:
              0.021728387 = score(doc=2509,freq=2.0), product of:
                0.16045728 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1354154 = fieldWeight in 2509, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.02734375 = fieldNorm(doc=2509)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Electronic library. 22(2004) no.2, S.112-120
  8. Computational information retrieval (2001) 0.00
    0.0047023837 = product of:
      0.009404767 = sum of:
        0.009404767 = product of:
          0.018809535 = sum of:
            0.018809535 = weight(_text_:m in 4167) [ClassicSimilarity], result of:
              0.018809535 = score(doc=4167,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1649624 = fieldWeight in 4167, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4167)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    m
  9. Kaszkiel, M.; Zobel, J.: Effective ranking with arbitrary passages (2001) 0.00
    0.0047023837 = product of:
      0.009404767 = sum of:
        0.009404767 = product of:
          0.018809535 = sum of:
            0.018809535 = weight(_text_:m in 5764) [ClassicSimilarity], result of:
              0.018809535 = score(doc=5764,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1649624 = fieldWeight in 5764, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.046875 = fieldNorm(doc=5764)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  10. Thelwall, M.: Can Google's PageRank be used to find the most important academic Web pages? (2003) 0.00
    0.0047023837 = product of:
      0.009404767 = sum of:
        0.009404767 = product of:
          0.018809535 = sum of:
            0.018809535 = weight(_text_:m in 4457) [ClassicSimilarity], result of:
              0.018809535 = score(doc=4457,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1649624 = fieldWeight in 4457, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4457)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  11. Käki, M.: fKWIC: frequency-based Keyword-in-Context Index for filtering Web search results (2006) 0.00
    0.0047023837 = product of:
      0.009404767 = sum of:
        0.009404767 = product of:
          0.018809535 = sum of:
            0.018809535 = weight(_text_:m in 6112) [ClassicSimilarity], result of:
              0.018809535 = score(doc=6112,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1649624 = fieldWeight in 6112, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.046875 = fieldNorm(doc=6112)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  12. Thelwall, M.; Vaughan, L.: New versions of PageRank employing alternative Web document models (2004) 0.00
    0.0047023837 = product of:
      0.009404767 = sum of:
        0.009404767 = product of:
          0.018809535 = sum of:
            0.018809535 = weight(_text_:m in 674) [ClassicSimilarity], result of:
              0.018809535 = score(doc=674,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1649624 = fieldWeight in 674, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.046875 = fieldNorm(doc=674)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  13. Yang, L.; Ji, D.; Leong, M.: Document reranking by term distribution and maximal marginal relevance for chinese information retrieval (2007) 0.00
    0.0047023837 = product of:
      0.009404767 = sum of:
        0.009404767 = product of:
          0.018809535 = sum of:
            0.018809535 = weight(_text_:m in 907) [ClassicSimilarity], result of:
              0.018809535 = score(doc=907,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1649624 = fieldWeight in 907, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.046875 = fieldNorm(doc=907)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  14. Desai, M.; Spink, A.: ¬A algorithm to cluster documents based on relevance (2005) 0.00
    0.0047023837 = product of:
      0.009404767 = sum of:
        0.009404767 = product of:
          0.018809535 = sum of:
            0.018809535 = weight(_text_:m in 1035) [ClassicSimilarity], result of:
              0.018809535 = score(doc=1035,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1649624 = fieldWeight in 1035, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1035)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  15. Efron, M.: Query expansion and dimensionality reduction : Notions of optimality in Rocchio relevance feedback and latent semantic indexing (2008) 0.00
    0.0047023837 = product of:
      0.009404767 = sum of:
        0.009404767 = product of:
          0.018809535 = sum of:
            0.018809535 = weight(_text_:m in 2020) [ClassicSimilarity], result of:
              0.018809535 = score(doc=2020,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1649624 = fieldWeight in 2020, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2020)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  16. Chang, M.; Poon, C.K.: Efficient phrase querying with common phrase index (2008) 0.00
    0.0047023837 = product of:
      0.009404767 = sum of:
        0.009404767 = product of:
          0.018809535 = sum of:
            0.018809535 = weight(_text_:m in 2061) [ClassicSimilarity], result of:
              0.018809535 = score(doc=2061,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.1649624 = fieldWeight in 2061, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2061)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  17. Bar-Ilan, J.; Levene, M.; Mat-Hassan, M.: Methods for evaluating dynamic changes in search engine rankings : a case study (2006) 0.00
    0.00443345 = product of:
      0.0088669 = sum of:
        0.0088669 = product of:
          0.0177338 = sum of:
            0.0177338 = weight(_text_:m in 616) [ClassicSimilarity], result of:
              0.0177338 = score(doc=616,freq=4.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.15552804 = fieldWeight in 616, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.03125 = fieldNorm(doc=616)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  18. Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (2005) 0.00
    0.00443345 = product of:
      0.0088669 = sum of:
        0.0088669 = product of:
          0.0177338 = sum of:
            0.0177338 = weight(_text_:m in 7) [ClassicSimilarity], result of:
              0.0177338 = score(doc=7,freq=4.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.15552804 = fieldWeight in 7, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.03125 = fieldNorm(doc=7)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    m
  19. Chen, H.; Lally, A.M.; Zhu, B.; Chau, M.: HelpfulMed : Intelligent searching for medical information over the Internet (2003) 0.00
    0.003918653 = product of:
      0.007837306 = sum of:
        0.007837306 = product of:
          0.015674612 = sum of:
            0.015674612 = weight(_text_:m in 1615) [ClassicSimilarity], result of:
              0.015674612 = score(doc=1615,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.13746867 = fieldWeight in 1615, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1615)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  20. Lopez-Pujalte, C.; Guerrero Bote, V.P.; Moya-Anegón, F. de: Evaluation of the application of genetic algorithms to relevance feedback (2003) 0.00
    0.003918653 = product of:
      0.007837306 = sum of:
        0.007837306 = product of:
          0.015674612 = sum of:
            0.015674612 = weight(_text_:m in 2756) [ClassicSimilarity], result of:
              0.015674612 = score(doc=2756,freq=2.0), product of:
                0.114023164 = queryWeight, product of:
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.045820985 = queryNorm
                0.13746867 = fieldWeight in 2756, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.4884486 = idf(docFreq=9980, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2756)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Challenges in knowledge representation and organization for the 21st century: Integration of knowledge across boundaries. Proceedings of the 7th ISKO International Conference Granada, Spain, July 10-13, 2002. Ed.: M. López-Huertas

Types

  • a 39
  • m 6
  • el 1
  • s 1
  • More… Less…