Search (25 results, page 1 of 2)

  • × theme_ss:"Retrievalalgorithmen"
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  • × type_ss:"a"
  1. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.02
    0.01940863 = product of:
      0.048521575 = sum of:
        0.012229082 = weight(_text_:e in 2134) [ClassicSimilarity], result of:
          0.012229082 = score(doc=2134,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.2223318 = fieldWeight in 2134, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.109375 = fieldNorm(doc=2134)
        0.036292493 = product of:
          0.07258499 = sum of:
            0.07258499 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.07258499 = score(doc=2134,freq=2.0), product of:
                0.1340043 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03826694 = 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)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    30. 3.2001 13:32:22
    Language
    e
  2. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.01
    0.009704315 = product of:
      0.024260787 = sum of:
        0.006114541 = weight(_text_:e in 1319) [ClassicSimilarity], result of:
          0.006114541 = score(doc=1319,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.1111659 = fieldWeight in 1319, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1319)
        0.018146247 = product of:
          0.036292493 = sum of:
            0.036292493 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
              0.036292493 = score(doc=1319,freq=2.0), product of:
                0.1340043 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03826694 = 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)
      0.4 = coord(2/5)
    
    Date
    1. 8.1996 22:08:06
    Language
    e
  3. Klas, C.-P.; Fuhr, N.; Schaefer, A.: Evaluating strategic support for information access in the DAFFODIL system (2004) 0.01
    0.009186348 = product of:
      0.022965869 = sum of:
        0.0074119437 = weight(_text_:e in 2419) [ClassicSimilarity], result of:
          0.0074119437 = score(doc=2419,freq=4.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.13475344 = fieldWeight in 2419, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.046875 = fieldNorm(doc=2419)
        0.015553925 = product of:
          0.03110785 = sum of:
            0.03110785 = weight(_text_:22 in 2419) [ClassicSimilarity], result of:
              0.03110785 = score(doc=2419,freq=2.0), product of:
                0.1340043 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03826694 = queryNorm
                0.23214069 = fieldWeight in 2419, 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=2419)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    16.11.2008 16:22:48
    Language
    e
    Source
    Research and advanced technology for digital libraries : 8th European conference, ECDL 2004, Bath, UK, September 12-17, 2004 : proceedings. Eds.: Heery, R. u. E. Lyon
  4. Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995) 0.01
    0.0069316537 = product of:
      0.017329134 = sum of:
        0.00436753 = weight(_text_:e in 5697) [ClassicSimilarity], result of:
          0.00436753 = score(doc=5697,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.07940422 = fieldWeight in 5697, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5697)
        0.012961605 = product of:
          0.02592321 = sum of:
            0.02592321 = weight(_text_:22 in 5697) [ClassicSimilarity], result of:
              0.02592321 = score(doc=5697,freq=2.0), product of:
                0.1340043 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03826694 = 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)
      0.4 = coord(2/5)
    
    Date
    22. 2.1996 13:14:10
    Language
    e
  5. Song, D.; Bruza, P.D.: Towards context sensitive information inference (2003) 0.01
    0.0069316537 = product of:
      0.017329134 = sum of:
        0.00436753 = weight(_text_:e in 1428) [ClassicSimilarity], result of:
          0.00436753 = score(doc=1428,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.07940422 = fieldWeight in 1428, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1428)
        0.012961605 = product of:
          0.02592321 = sum of:
            0.02592321 = weight(_text_:22 in 1428) [ClassicSimilarity], result of:
              0.02592321 = score(doc=1428,freq=2.0), product of:
                0.1340043 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03826694 = queryNorm
                0.19345059 = fieldWeight in 1428, 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=1428)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    22. 3.2003 19:35:46
    Language
    e
  6. Shiri, A.A.; Revie, C.: Query expansion behavior within a thesaurus-enhanced search environment : a user-centered evaluation (2006) 0.01
    0.0069316537 = product of:
      0.017329134 = sum of:
        0.00436753 = weight(_text_:e in 56) [ClassicSimilarity], result of:
          0.00436753 = score(doc=56,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.07940422 = fieldWeight in 56, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0390625 = fieldNorm(doc=56)
        0.012961605 = product of:
          0.02592321 = sum of:
            0.02592321 = weight(_text_:22 in 56) [ClassicSimilarity], result of:
              0.02592321 = score(doc=56,freq=2.0), product of:
                0.1340043 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03826694 = queryNorm
                0.19345059 = fieldWeight in 56, 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=56)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    22. 7.2006 16:32:43
    Language
    e
  7. Srinivasan, P.: Query expansion and MEDLINE (1996) 0.00
    0.0013976095 = product of:
      0.006988047 = sum of:
        0.006988047 = weight(_text_:e in 8453) [ClassicSimilarity], result of:
          0.006988047 = score(doc=8453,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.12704675 = fieldWeight in 8453, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0625 = fieldNorm(doc=8453)
      0.2 = coord(1/5)
    
    Language
    e
  8. Kulyukin, V.A.; Settle, A.: Ranked retrieval with semantic networks and vector spaces (2001) 0.00
    0.0013976095 = product of:
      0.006988047 = sum of:
        0.006988047 = weight(_text_:e in 6934) [ClassicSimilarity], result of:
          0.006988047 = score(doc=6934,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.12704675 = fieldWeight in 6934, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0625 = fieldNorm(doc=6934)
      0.2 = coord(1/5)
    
    Language
    e
  9. Calegari, S.; Sanchez, E.: Object-fuzzy concept network : an enrichment of ontologies in semantic information retrieval (2008) 0.00
    0.001235324 = product of:
      0.00617662 = sum of:
        0.00617662 = weight(_text_:e in 2393) [ClassicSimilarity], result of:
          0.00617662 = score(doc=2393,freq=4.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.112294525 = fieldWeight in 2393, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2393)
      0.2 = coord(1/5)
    
    Language
    e
  10. Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992) 0.00
    0.0012229083 = product of:
      0.006114541 = sum of:
        0.006114541 = weight(_text_:e in 2731) [ClassicSimilarity], result of:
          0.006114541 = score(doc=2731,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.1111659 = fieldWeight in 2731, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2731)
      0.2 = coord(1/5)
    
    Language
    e
  11. Beaulieu, M.; Jones, S.: Interactive searching and interface issues in the Okapi best match probabilistic retrieval system (1998) 0.00
    0.0012229083 = product of:
      0.006114541 = sum of:
        0.006114541 = weight(_text_:e in 430) [ClassicSimilarity], result of:
          0.006114541 = score(doc=430,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.1111659 = fieldWeight in 430, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0546875 = fieldNorm(doc=430)
      0.2 = coord(1/5)
    
    Language
    e
  12. Bhogal, J.; Macfarlane, A.; Smith, P.: ¬A review of ontology based query expansion (2007) 0.00
    0.0012229083 = product of:
      0.006114541 = sum of:
        0.006114541 = weight(_text_:e in 919) [ClassicSimilarity], result of:
          0.006114541 = score(doc=919,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.1111659 = fieldWeight in 919, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0546875 = fieldNorm(doc=919)
      0.2 = coord(1/5)
    
    Language
    e
  13. Kwok, K.L.: ¬A network approach to probabilistic information retrieval (1995) 0.00
    0.0010482072 = product of:
      0.0052410355 = sum of:
        0.0052410355 = weight(_text_:e in 5696) [ClassicSimilarity], result of:
          0.0052410355 = score(doc=5696,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.09528506 = fieldWeight in 5696, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.046875 = fieldNorm(doc=5696)
      0.2 = coord(1/5)
    
    Language
    e
  14. Chen, H.; Zhang, Y.; Houston, A.L.: Semantic indexing and searching using a Hopfield net (1998) 0.00
    0.0010482072 = product of:
      0.0052410355 = sum of:
        0.0052410355 = weight(_text_:e in 5704) [ClassicSimilarity], result of:
          0.0052410355 = score(doc=5704,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.09528506 = fieldWeight in 5704, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.046875 = fieldNorm(doc=5704)
      0.2 = coord(1/5)
    
    Language
    e
  15. Nie, J.-Y.: Query expansion and query translation as logical inference (2003) 0.00
    0.0010482072 = product of:
      0.0052410355 = sum of:
        0.0052410355 = weight(_text_:e in 1425) [ClassicSimilarity], result of:
          0.0052410355 = score(doc=1425,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.09528506 = fieldWeight in 1425, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.046875 = fieldNorm(doc=1425)
      0.2 = coord(1/5)
    
    Language
    e
  16. Zhang, W.; Yoshida, T.; Tang, X.: ¬A comparative study of TF*IDF, LSI and multi-words for text classification (2011) 0.00
    0.0010482072 = product of:
      0.0052410355 = sum of:
        0.0052410355 = weight(_text_:e in 1165) [ClassicSimilarity], result of:
          0.0052410355 = score(doc=1165,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.09528506 = fieldWeight in 1165, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.046875 = fieldNorm(doc=1165)
      0.2 = coord(1/5)
    
    Language
    e
  17. Jindal, V.; Bawa, S.; Batra, S.: ¬A review of ranking approaches for semantic search on Web (2014) 0.00
    0.0010482072 = product of:
      0.0052410355 = sum of:
        0.0052410355 = weight(_text_:e in 2799) [ClassicSimilarity], result of:
          0.0052410355 = score(doc=2799,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.09528506 = fieldWeight in 2799, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.046875 = fieldNorm(doc=2799)
      0.2 = coord(1/5)
    
    Language
    e
  18. Chen, H.; Lally, A.M.; Zhu, B.; Chau, M.: HelpfulMed : Intelligent searching for medical information over the Internet (2003) 0.00
    8.73506E-4 = product of:
      0.00436753 = sum of:
        0.00436753 = weight(_text_:e in 1615) [ClassicSimilarity], result of:
          0.00436753 = score(doc=1615,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.07940422 = fieldWeight in 1615, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1615)
      0.2 = coord(1/5)
    
    Language
    e
  19. Quiroga, L.M.; Mostafa, J.: ¬An experiment in building profiles in information filtering : the role of context of user relevance feedback (2002) 0.00
    8.73506E-4 = product of:
      0.00436753 = sum of:
        0.00436753 = weight(_text_:e in 2579) [ClassicSimilarity], result of:
          0.00436753 = score(doc=2579,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.07940422 = fieldWeight in 2579, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2579)
      0.2 = coord(1/5)
    
    Language
    e
  20. Schaefer, A.; Jordan, M.; Klas, C.-P.; Fuhr, N.: Active support for query formulation in virtual digital libraries : a case study with DAFFODIL (2005) 0.00
    8.73506E-4 = product of:
      0.00436753 = sum of:
        0.00436753 = weight(_text_:e in 4296) [ClassicSimilarity], result of:
          0.00436753 = score(doc=4296,freq=2.0), product of:
            0.055003747 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03826694 = queryNorm
            0.07940422 = fieldWeight in 4296, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4296)
      0.2 = coord(1/5)
    
    Language
    e