Search (46 results, page 1 of 3)

  • × theme_ss:"Retrievalstudien"
  1. Frei, H.P.; Meienberg, S.; Schäuble, P.: ¬The perils of interpreting recall and precision values (1991) 0.04
    0.04476304 = product of:
      0.13428912 = sum of:
        0.13428912 = weight(_text_:h.p in 786) [ClassicSimilarity], result of:
          0.13428912 = score(doc=786,freq=2.0), product of:
            0.25747362 = queryWeight, product of:
              5.9008293 = idf(docFreq=328, maxDocs=44218)
              0.043633465 = queryNorm
            0.52156454 = fieldWeight in 786, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.9008293 = idf(docFreq=328, maxDocs=44218)
              0.0625 = fieldNorm(doc=786)
      0.33333334 = coord(1/3)
    
  2. Frei, H.P.; Schäuble, P.: Determining the effectiveness of retrieval algorithms (1991) 0.03
    0.03357228 = product of:
      0.10071684 = sum of:
        0.10071684 = weight(_text_:h.p in 787) [ClassicSimilarity], result of:
          0.10071684 = score(doc=787,freq=2.0), product of:
            0.25747362 = queryWeight, product of:
              5.9008293 = idf(docFreq=328, maxDocs=44218)
              0.043633465 = queryNorm
            0.39117342 = fieldWeight in 787, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.9008293 = idf(docFreq=328, maxDocs=44218)
              0.046875 = fieldNorm(doc=787)
      0.33333334 = coord(1/3)
    
  3. Buckley, C.; Voorhees, E.M.: Retrieval evaluation with incomplete information (2004) 0.02
    0.019598098 = product of:
      0.058794294 = sum of:
        0.058794294 = product of:
          0.11758859 = sum of:
            0.11758859 = weight(_text_:u.a in 4127) [ClassicSimilarity], result of:
              0.11758859 = score(doc=4127,freq=2.0), product of:
                0.19672036 = queryWeight, product of:
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.043633465 = queryNorm
                0.5977449 = fieldWeight in 4127, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.09375 = fieldNorm(doc=4127)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    SIGIR'04: Proceedings of the 27th Annual International ACM-SIGIR Conference an Research and Development in Information Retrieval. Ed.: K. Järvelin, u.a
  4. Fan, W.; Luo, M.; Wang, L.; Xi, W.; Fox, E.A.: Tuning before feedback : combining ranking discovery and blind feedback for robust retrieval (2004) 0.02
    0.01633175 = product of:
      0.04899525 = sum of:
        0.04899525 = product of:
          0.0979905 = sum of:
            0.0979905 = weight(_text_:u.a in 4052) [ClassicSimilarity], result of:
              0.0979905 = score(doc=4052,freq=2.0), product of:
                0.19672036 = queryWeight, product of:
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.043633465 = queryNorm
                0.49812075 = fieldWeight in 4052, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.078125 = fieldNorm(doc=4052)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    SIGIR'04: Proceedings of the 27th Annual International ACM-SIGIR Conference an Research and Development in Information Retrieval. Ed.: K. Järvelin, u.a
  5. Kazai, G.; Lalmas, M.: ¬The overlap problem in content-oriented XML retrieval evaluation (2004) 0.02
    0.01633175 = product of:
      0.04899525 = sum of:
        0.04899525 = product of:
          0.0979905 = sum of:
            0.0979905 = weight(_text_:u.a in 4083) [ClassicSimilarity], result of:
              0.0979905 = score(doc=4083,freq=2.0), product of:
                0.19672036 = queryWeight, product of:
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.043633465 = queryNorm
                0.49812075 = fieldWeight in 4083, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.078125 = fieldNorm(doc=4083)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    SIGIR'04: Proceedings of the 27th Annual International ACM-SIGIR Conference an Research and Development in Information Retrieval. Ed.: K. Järvelin, u.a
  6. Amitay, E.; Carmel, D.; Lempel, R.; Soffer, A.: Scaling IR-system evaluation using Term Relevance Sets (2004) 0.02
    0.01633175 = product of:
      0.04899525 = sum of:
        0.04899525 = product of:
          0.0979905 = sum of:
            0.0979905 = weight(_text_:u.a in 4118) [ClassicSimilarity], result of:
              0.0979905 = score(doc=4118,freq=2.0), product of:
                0.19672036 = queryWeight, product of:
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.043633465 = queryNorm
                0.49812075 = fieldWeight in 4118, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.078125 = fieldNorm(doc=4118)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    SIGIR'04: Proceedings of the 27th Annual International ACM-SIGIR Conference an Research and Development in Information Retrieval. Ed.: K. Järvelin, u.a
  7. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.01
    0.013794041 = product of:
      0.041382123 = sum of:
        0.041382123 = product of:
          0.082764246 = sum of:
            0.082764246 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
              0.082764246 = score(doc=262,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.5416616 = fieldWeight in 262, 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=262)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    20.10.2000 12:22:23
  8. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.01
    0.013794041 = product of:
      0.041382123 = sum of:
        0.041382123 = product of:
          0.082764246 = sum of:
            0.082764246 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
              0.082764246 = score(doc=6418,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.5416616 = fieldWeight in 6418, 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=6418)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Online. 22(1998) no.6, S.57-58
  9. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.01
    0.013794041 = product of:
      0.041382123 = sum of:
        0.041382123 = product of:
          0.082764246 = sum of:
            0.082764246 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
              0.082764246 = score(doc=6438,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.5416616 = fieldWeight in 6438, 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=6438)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    11. 8.2001 16:22:19
  10. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.01
    0.013794041 = product of:
      0.041382123 = sum of:
        0.041382123 = product of:
          0.082764246 = sum of:
            0.082764246 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
              0.082764246 = score(doc=5089,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.5416616 = fieldWeight in 5089, 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=5089)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    22. 7.2006 18:43:54
  11. Grummann, M.: Sind Verfahren zur maschinellen Indexierung für Literaturbestände Öffentlicher Bibliotheken geeignet? : Retrievaltests von indexierten ekz-Daten mit der Software IDX (2000) 0.01
    0.0130654 = product of:
      0.039196197 = sum of:
        0.039196197 = product of:
          0.078392394 = sum of:
            0.078392394 = weight(_text_:u.a in 1879) [ClassicSimilarity], result of:
              0.078392394 = score(doc=1879,freq=2.0), product of:
                0.19672036 = queryWeight, product of:
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.043633465 = queryNorm
                0.3984966 = fieldWeight in 1879, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.0625 = fieldNorm(doc=1879)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Abstract
    Maschinelles Indexieren vereinheitlicht und vermehrt das Suchvokabular eines Bibliothekskatalogs durch verschiedene Methoden (u.a. Ermittlung der Grundform, Kompositazerlegung, Wortableitungen). Ein Retrievaltest mit einem für öffentliche Bibliotheken typischen Sachbuchbestand zeigt, dass dieses Verfahren die Ergebnisse von OPAC-Recherchen verbessert - trotz 'blumiger' Titelformulierungen. Im Vergleich zu herkömmlichen Erschließungsmethoden (Stich- und Schlagwörter) werden mehr relevante Titel gefunden, ohne gleichzeitig den 'Ballast' zu erhöhen. Das maschinelle Indexieren kann die Verschlagwortung jedoch nicht ersetzen, sondern nur ergänzen
  12. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.01
    0.009852887 = product of:
      0.02955866 = sum of:
        0.02955866 = product of:
          0.05911732 = sum of:
            0.05911732 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
              0.05911732 = score(doc=3103,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.38690117 = fieldWeight in 3103, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=3103)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    27. 2.1999 20:55:22
  13. Ng, K.B.; Loewenstern, D.; Basu, C.; Hirsh, H.; Kantor, P.B.: Data fusion of machine-learning methods for the TREC5 routing tak (and other work) (1997) 0.01
    0.009852887 = product of:
      0.02955866 = sum of:
        0.02955866 = product of:
          0.05911732 = sum of:
            0.05911732 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
              0.05911732 = score(doc=3107,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.38690117 = fieldWeight in 3107, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=3107)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    27. 2.1999 20:59:22
  14. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.01
    0.009852887 = product of:
      0.02955866 = sum of:
        0.02955866 = product of:
          0.05911732 = sum of:
            0.05911732 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
              0.05911732 = score(doc=2417,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.38690117 = fieldWeight in 2417, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=2417)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Pages
    S.22-25
  15. Evans, J.E.: Some external and internal factors affecting users of interactive information systems (1996) 0.01
    0.009799049 = product of:
      0.029397147 = sum of:
        0.029397147 = product of:
          0.058794294 = sum of:
            0.058794294 = weight(_text_:u.a in 6262) [ClassicSimilarity], result of:
              0.058794294 = score(doc=6262,freq=2.0), product of:
                0.19672036 = queryWeight, product of:
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.043633465 = queryNorm
                0.29887244 = fieldWeight in 6262, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.046875 = fieldNorm(doc=6262)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Herausforderungen an die Informationswirtschaft: Informationsverdichtung, Informationsbewertung und Datenvisualisierung. Proceedings des 5. Internationalen Symposiums für Informationswissenschaft (ISI'96), Humboldt-Universität zu Berlin, 17.-19. Oktober 1996. Hrsg.: J. Krause u.a
  16. Cross-language information retrieval (1998) 0.01
    0.008165875 = product of:
      0.024497624 = sum of:
        0.024497624 = product of:
          0.04899525 = sum of:
            0.04899525 = weight(_text_:u.a in 6299) [ClassicSimilarity], result of:
              0.04899525 = score(doc=6299,freq=8.0), product of:
                0.19672036 = queryWeight, product of:
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.043633465 = queryNorm
                0.24906038 = fieldWeight in 6299, product of:
                  2.828427 = tf(freq=8.0), with freq of:
                    8.0 = termFreq=8.0
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.01953125 = fieldNorm(doc=6299)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Content
    Enthält die Beiträge: GREFENSTETTE, G.: The Problem of Cross-Language Information Retrieval; DAVIS, M.W.: On the Effective Use of Large Parallel Corpora in Cross-Language Text Retrieval; BALLESTEROS, L. u. W.B. CROFT: Statistical Methods for Cross-Language Information Retrieval; Distributed Cross-Lingual Information Retrieval; Automatic Cross-Language Information Retrieval Using Latent Semantic Indexing; EVANS, D.A. u.a.: Mapping Vocabularies Using Latent Semantics; PICCHI, E. u. C. PETERS: Cross-Language Information Retrieval: A System for Comparable Corpus Querying; YAMABANA, K. u.a.: A Language Conversion Front-End for Cross-Language Information Retrieval; GACHOT, D.A. u.a.: The Systran NLP Browser: An Application of Machine Translation Technology in Cross-Language Information Retrieval; HULL, D.: A Weighted Boolean Model for Cross-Language Text Retrieval; SHERIDAN, P. u.a. Building a Large Multilingual Test Collection from Comparable News Documents; OARD; D.W. u. B.J. DORR: Evaluating Cross-Language Text Filtering Effectiveness
  17. Wartena, C.; Golub, K.: Evaluierung von Verschlagwortung im Kontext des Information Retrievals (2021) 0.01
    0.008165875 = product of:
      0.024497624 = sum of:
        0.024497624 = product of:
          0.04899525 = sum of:
            0.04899525 = weight(_text_:u.a in 376) [ClassicSimilarity], result of:
              0.04899525 = score(doc=376,freq=2.0), product of:
                0.19672036 = queryWeight, product of:
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.043633465 = queryNorm
                0.24906038 = fieldWeight in 376, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.5084743 = idf(docFreq=1323, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=376)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Qualität in der Inhaltserschließung. Hrsg.: M. Franke-Maier, u.a
  18. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01
    0.00788231 = product of:
      0.023646928 = sum of:
        0.023646928 = product of:
          0.047293857 = sum of:
            0.047293857 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
              0.047293857 = score(doc=5002,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.30952093 = fieldWeight in 5002, 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=5002)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    19. 3.1996 11:22:12
  19. Sanderson, M.: ¬The Reuters test collection (1996) 0.01
    0.00788231 = product of:
      0.023646928 = sum of:
        0.023646928 = product of:
          0.047293857 = sum of:
            0.047293857 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
              0.047293857 = score(doc=6971,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.30952093 = fieldWeight in 6971, 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=6971)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    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
  20. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.01
    0.00788231 = product of:
      0.023646928 = sum of:
        0.023646928 = product of:
          0.047293857 = sum of:
            0.047293857 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
              0.047293857 = score(doc=744,freq=2.0), product of:
                0.15279695 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043633465 = queryNorm
                0.30952093 = fieldWeight in 744, 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=744)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    1. 8.1996 22:01:00

Languages

  • e 39
  • d 5
  • f 1
  • More… Less…

Types

  • a 41
  • s 4
  • m 3
  • More… Less…