-
Hiemstra, D.; Kraaij, W.: ¬A language-modeling approach to TREC (2005)
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- Date
- 29. 3.1996 18:16:49
-
Womser-Hacker, C.: Evaluierung im Information Retrieval (2013)
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- Date
- 5. 4.2013 13:53:29
- Source
- Grundlagen der praktischen Information und Dokumentation. Handbuch zur Einführung in die Informationswissenschaft und -praxis. 6., völlig neu gefaßte Ausgabe. Hrsg. von R. Kuhlen, W. Semar u. D. Strauch. Begründet von Klaus Laisiepen, Ernst Lutterbeck, Karl-Heinrich Meyer-Uhlenried
-
Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001)
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- Abstract
- Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht
-
Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973)
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- Date
- 19. 3.1996 11:22:12
- Source
- Journal of documentation. 29(1973) no.3, S.251-257
-
Chu, H.: Factors affecting relevance judgment : a report from TREC Legal track (2011)
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- Date
- 12. 7.2011 18:29:22
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Fan, W.; Luo, M.; Wang, L.; Xi, W.; Fox, E.A.: Tuning before feedback : combining ranking discovery and blind feedback for robust retrieval (2004)
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-
Hofstede, M.: Literatuur over onderwerpen zoeken in de OPC (1994)
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- Source
- CRI bulletin. 29(1994), Sept., S.14-15
-
Kluck, M.: ¬Eine deutschsprachige Testdatenbank für moderne Erschließungs- und Retrievalsysteme : German Indexing and Retrieval Testdatabase - GIRT (1996)
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- Source
- Die digitale Revolution: Deutscher Dokumentartag 1996, Neue Universität Heidelberg, 24.-26.9.1996. Hrsg.: W. Neubauer
-
Lai, K.F.; Ngo, C.-W.: Experiments on routing, filtering and Chinese text retrieval in TREC-5 (1997)
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-
Hancock-Beaulieu, M.; McKenzie, L.; Irving, A.: Evaluative protocols for searching behaviour in online library catalogues (1991)
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- Date
- 23. 1.1999 19:52:29
-
Harman, D.K.: ¬The TREC test collections (2005)
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- Date
- 29. 3.1996 18:16:49
-
Buckley, C.; Voorhees, E.M.: Retrieval system evaluation (2005)
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- Date
- 29. 3.1996 18:16:49
-
Voiskunskii, V.G.: Evaluation of search results (2000)
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- Source
- Encyclopedia of library and information science. Vol.66, [=Suppl.29]
-
Harman, D.K.: ¬The TREC ad hoc experiments (2005)
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- Date
- 29. 3.1996 18:16:49
-
Robertson, S.; Callan, J.: Routing and filtering (2005)
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- Date
- 29. 3.1996 18:16:49
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Beaulieu, M.: Approaches to user-based studies in information seeking and retrieval : a Sheffield perspective (2003)
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- Source
- Journal of information science. 29(2003) no.4, S.239-248
-
Harman, D.K.: Beyond English (2005)
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- Date
- 29. 3.1996 18:16:49
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Voorhees, E.M.; Garofolo, J.S.: Retrieving noisy text (2005)
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- Date
- 29. 3.1996 18:16:49
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Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984)
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- 20.10.2000 12:22:23
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Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998)
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- Source
- Online. 22(1998) no.6, S.57-58