Search (31 results, page 1 of 2)

  • × theme_ss:"Retrievalalgorithmen"
  1. Voorhees, E.M.: Implementing agglomerative hierarchic clustering algorithms for use in document retrieval (1986) 0.02 
    0.022207877 = product of:
  0.111039385 = sum of:
    0.111039385 = weight(_text_:22 in 402) [ClassicSimilarity], result of:
      0.111039385 = score(doc=402,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.61904186 = fieldWeight in 402, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.125 = fieldNorm(doc=402)
  0.2 = coord(1/5)
    Source
    Information processing and management. 22(1986) no.6, S.465-476
  2. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.02 
    0.019431893 = product of:
  0.09715946 = sum of:
    0.09715946 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
      0.09715946 = score(doc=2134,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.5416616 = fieldWeight in 2134, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.109375 = fieldNorm(doc=2134)
  0.2 = coord(1/5)
    Date
    30. 3.2001 13:32:22
  3. Back, J.: ¬An evaluation of relevancy ranking techniques used by Internet search engines (2000) 0.02 
    0.019431893 = product of:
  0.09715946 = sum of:
    0.09715946 = weight(_text_:22 in 3445) [ClassicSimilarity], result of:
      0.09715946 = score(doc=3445,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.5416616 = fieldWeight in 3445, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.109375 = fieldNorm(doc=3445)
  0.2 = coord(1/5)
    Date
    25. 8.2005 17:42:22
  4. Fuhr, N.: Ranking-Experimente mit gewichteter Indexierung (1986) 0.02 
    0.016655907 = product of:
  0.083279535 = sum of:
    0.083279535 = weight(_text_:22 in 58) [ClassicSimilarity], result of:
      0.083279535 = score(doc=58,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.46428138 = fieldWeight in 58, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.09375 = fieldNorm(doc=58)
  0.2 = coord(1/5)
    Date
    14. 6.2015 22:12:44
  5. Fuhr, N.: Rankingexperimente mit gewichteter Indexierung (1986) 0.02 
    0.016655907 = product of:
  0.083279535 = sum of:
    0.083279535 = weight(_text_:22 in 2051) [ClassicSimilarity], result of:
      0.083279535 = score(doc=2051,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.46428138 = fieldWeight in 2051, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.09375 = fieldNorm(doc=2051)
  0.2 = coord(1/5)
    Date
    14. 6.2015 22:12:56
  6. Kaszkiel, M.; Zobel, J.: Effective ranking with arbitrary passages (2001) 0.02 
    0.015863424 = product of:
  0.079317115 = sum of:
    0.079317115 = weight(_text_:books in 5764) [ClassicSimilarity], result of:
      0.079317115 = score(doc=5764,freq=2.0), product of:
        0.24756333 = queryWeight, product of:
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.051222645 = queryNorm
        0.3203912 = fieldWeight in 5764, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.046875 = fieldNorm(doc=5764)
  0.2 = coord(1/5)
    Abstract
    Text retrieval systems store a great variety of documents, from abstracts, newspaper articles, and Web pages to journal articles, books, court transcripts, and legislation. Collections of diverse types of documents expose shortcomings in current approaches to ranking. Use of short fragments of documents, called passages, instead of whole documents can overcome these shortcomings: passage ranking provides convenient units of text to return to the user, can avoid the difficulties of comparing documents of different length, and enables identification of short blocks of relevant material among otherwise irrelevant text. In this article, we compare several kinds of passage in an extensive series of experiments. We introduce a new type of passage, overlapping fragments of either fixed or variable length. We show that ranking with these arbitrary passages gives substantial improvements in retrieval effectiveness over traditional document ranking schemes, particularly for queries on collections of long documents. Ranking with arbitrary passages shows consistent improvements compared to ranking with whole documents, and to ranking with previous passage types that depend on document structure or topic shifts in documents
  7. Zhu, J.; Han, L.; Gou, Z.; Yuan, X.: ¬A fuzzy clustering-based denoising model for evaluating uncertainty in collaborative filtering recommender systems (2018) 0.01 
    0.01321952 = product of:
  0.0660976 = sum of:
    0.0660976 = weight(_text_:books in 4460) [ClassicSimilarity], result of:
      0.0660976 = score(doc=4460,freq=2.0), product of:
        0.24756333 = queryWeight, product of:
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.051222645 = queryNorm
        0.2669927 = fieldWeight in 4460, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.0390625 = fieldNorm(doc=4460)
  0.2 = coord(1/5)
    Abstract
    Recommender systems are effective in predicting the most suitable products for users, such as movies and books. To facilitate personalized recommendations, the quality of item ratings should be guaranteed. However, a few ratings might not be accurate enough due to the uncertainty of user behavior and are referred to as natural noise. In this article, we present a novel fuzzy clustering-based method for detecting noisy ratings. The entropy of a subset of the original ratings dataset is used to indicate the data-driven uncertainty, and evaluation metrics are adopted to represent the prediction-driven uncertainty. After the repetition of resampling and the execution of a recommendation algorithm, the entropy and evaluation metrics vectors are obtained and are empirically categorized to identify the proportion of the potential noise. Then, the fuzzy C-means-based denoising (FCMD) algorithm is performed to verify the natural noise under the assumption that natural noise is primarily the result of the exceptional behavior of users. Finally, a case study is performed using two real-world datasets. The experimental results show that our proposal outperforms previous proposals and has an advantage in dealing with natural noise.
  8. MacFarlane, A.; Robertson, S.E.; McCann, J.A.: Parallel computing for passage retrieval (2004) 0.01 
    0.011103938 = product of:
  0.055519693 = sum of:
    0.055519693 = weight(_text_:22 in 5108) [ClassicSimilarity], result of:
      0.055519693 = score(doc=5108,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.30952093 = fieldWeight in 5108, 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=5108)
  0.2 = coord(1/5)
    Date
    20. 1.2007 18:30:22
  9. Faloutsos, C.: Signature files (1992) 0.01 
    0.011103938 = product of:
  0.055519693 = sum of:
    0.055519693 = weight(_text_:22 in 3499) [ClassicSimilarity], result of:
      0.055519693 = score(doc=3499,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.30952093 = fieldWeight in 3499, 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=3499)
  0.2 = coord(1/5)
    Date
    7. 5.1999 15:22:48
  10. Losada, D.E.; Barreiro, A.: Emebedding term similarity and inverse document frequency into a logical model of information retrieval (2003) 0.01 
    0.011103938 = product of:
  0.055519693 = sum of:
    0.055519693 = weight(_text_:22 in 1422) [ClassicSimilarity], result of:
      0.055519693 = score(doc=1422,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.30952093 = fieldWeight in 1422, 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=1422)
  0.2 = coord(1/5)
    Date
    22. 3.2003 19:27:23
  11. Bornmann, L.; Mutz, R.: From P100 to P100' : a new citation-rank approach (2014) 0.01 
    0.011103938 = product of:
  0.055519693 = sum of:
    0.055519693 = weight(_text_:22 in 1431) [ClassicSimilarity], result of:
      0.055519693 = score(doc=1431,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.30952093 = fieldWeight in 1431, 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=1431)
  0.2 = coord(1/5)
    Date
    22. 8.2014 17:05:18
  12. Tober, M.; Hennig, L.; Furch, D.: SEO Ranking-Faktoren und Rang-Korrelationen 2014 : Google Deutschland (2014) 0.01 
    0.011103938 = product of:
  0.055519693 = sum of:
    0.055519693 = weight(_text_:22 in 1484) [ClassicSimilarity], result of:
      0.055519693 = score(doc=1484,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.30952093 = fieldWeight in 1484, 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=1484)
  0.2 = coord(1/5)
    Date
    13. 9.2014 14:45:22
  13. Ravana, S.D.; Rajagopal, P.; Balakrishnan, V.: Ranking retrieval systems using pseudo relevance judgments (2015) 0.01 
    0.009814587 = product of:
  0.049072936 = sum of:
    0.049072936 = weight(_text_:22 in 2591) [ClassicSimilarity], result of:
      0.049072936 = score(doc=2591,freq=4.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.27358043 = fieldWeight in 2591, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2591)
  0.2 = coord(1/5)
    Date
    20. 1.2015 18:30:22
    18. 9.2018 18:22:56
  14. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.01 
    0.009715946 = product of:
  0.04857973 = sum of:
    0.04857973 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
      0.04857973 = score(doc=1319,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = 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)
  0.2 = coord(1/5)
    Date
    1. 8.1996 22:08:06
  15. Kanaeva, Z.: Ranking: Google und CiteSeer (2005) 0.01 
    0.009715946 = product of:
  0.04857973 = sum of:
    0.04857973 = weight(_text_:22 in 3276) [ClassicSimilarity], result of:
      0.04857973 = score(doc=3276,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.2708308 = fieldWeight in 3276, 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=3276)
  0.2 = coord(1/5)
    Date
    20. 3.2005 16:23:22
  16. Joss, M.W.; Wszola, S.: ¬The engines that can : text search and retrieval software, their strategies, and vendors (1996) 0.01 
    0.0083279535 = product of:
  0.041639768 = sum of:
    0.041639768 = weight(_text_:22 in 5123) [ClassicSimilarity], result of:
      0.041639768 = score(doc=5123,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.23214069 = fieldWeight in 5123, 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=5123)
  0.2 = coord(1/5)
    Date
    12. 9.1996 13:56:22
  17. Kelledy, F.; Smeaton, A.F.: Signature files and beyond (1996) 0.01 
    0.0083279535 = product of:
  0.041639768 = sum of:
    0.041639768 = weight(_text_:22 in 6973) [ClassicSimilarity], result of:
      0.041639768 = score(doc=6973,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.23214069 = fieldWeight in 6973, 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=6973)
  0.2 = coord(1/5)
    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
  18. Crestani, F.; Dominich, S.; Lalmas, M.; Rijsbergen, C.J.K. van: Mathematical, logical, and formal methods in information retrieval : an introduction to the special issue (2003) 0.01 
    0.0083279535 = product of:
  0.041639768 = sum of:
    0.041639768 = weight(_text_:22 in 1451) [ClassicSimilarity], result of:
      0.041639768 = score(doc=1451,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.23214069 = fieldWeight in 1451, 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=1451)
  0.2 = coord(1/5)
    Date
    22. 3.2003 19:27:36
  19. Fan, W.; Fox, E.A.; Pathak, P.; Wu, H.: ¬The effects of fitness functions an genetic programming-based ranking discovery for Web search (2004) 0.01 
    0.0083279535 = product of:
  0.041639768 = sum of:
    0.041639768 = weight(_text_:22 in 2239) [ClassicSimilarity], result of:
      0.041639768 = score(doc=2239,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.23214069 = fieldWeight in 2239, 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=2239)
  0.2 = coord(1/5)
    Date
    31. 5.2004 19:22:06
  20. Furner, J.: ¬A unifying model of document relatedness for hybrid search engines (2003) 0.01 
    0.0083279535 = product of:
  0.041639768 = sum of:
    0.041639768 = weight(_text_:22 in 2717) [ClassicSimilarity], result of:
      0.041639768 = score(doc=2717,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.23214069 = fieldWeight in 2717, 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=2717)
  0.2 = coord(1/5)
    Date
    11. 9.2004 17:32:22

Authors

Years

Languages

  • e 27
  • d 4

Types

  • a 29
  • m 1
  • r 1
  • More… Less…

Themes

Subjects

Classifications