Search (25 results, page 1 of 2)

  • × theme_ss:"Retrievalstudien"
  • × year_i:[2000 TO 2010}
  1. ¬The Eleventh Text Retrieval Conference, TREC 2002 (2003) 0.05 
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    Abstract
    Proceedings of the llth TREC-conference held in Gaithersburg, Maryland (USA), November 19-22, 2002. Aim of the conference was discussion an retrieval and related information-seeking tasks for large test collection. 93 research groups used different techniques, for information retrieval from the same large database. This procedure makes it possible to compare the results. The tasks are: Cross-language searching, filtering, interactive searching, searching for novelty, question answering, searching for video shots, and Web searching.
  2. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.04 
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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
    Footnote
    Vgl. auch den Bericht in: nfd 53(2002) H.2, S.71
  3. Kuriyama, K.; Kando, N.; Nozue, T.; Eguchi, K.: Pooling for a large-scale test collection : an analysis of the search results from the First NTCIR Workshop (2002) 0.03 
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    Source
    Information retrieval. 5(2002), S.41-59
    Year
    2002
  4. Griesbaum, J.; Rittberger, M.; Bekavac, B.: Deutsche Suchmaschinen im Vergleich : AltaVista.de, Fireball.de, Google.de und Lycos.de (2002) 0.03 
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    Source
    Information und Mobilität: Optimierung und Vermeidung von Mobilität durch Information. Proceedings des 8. Internationalen Symposiums für Informationswissenschaft (ISI 2002), 7.-10.10.2002, Regensburg. Hrsg.: Rainer Hammwöhner, Christian Wolff, Christa Womser-Hacker
    Year
    2002
  5. Bar-Ilan, J.: Methods for measuring search engine performance over time (2002) 0.02 
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    Source
    Journal of the American Society for Information Science and technology. 53(2002) no.4, S.308-319
    Year
    2002
  6. Blair, D.C.: Some thoughts on the reported results of TREC (2002) 0.02 
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    Source
    Information processing and management. 38(2002) no.3, S.445-451
    Year
    2002
  7. Morse, E.; Lewis, M.; Olsen, K.A.: Testing visual information retrieval methodologies case study : comparative analysis of textual, icon, graphical, and "spring" displays (2002) 0.02 
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    Source
    Journal of the American Society for Information Science and technology. 53(2002) no.1, S.28-40
    Year
    2002
  8. Kluck, M.; Mandl, T.; Womser-Hacker, C.: Cross-Language Evaluation Forum (CLEF) : Europäische Initiative zur Bewertung sprachübergreifender Retrievalverfahren (2002) 0.02 
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    Source
    Information - Wissenschaft und Praxis. 53(2002) H.2, S.82-89
    Year
    2002
  9. Zhang, X.: Collaborative relevance judgment : a group consensus method for evaluating user search performance (2002) 0.02 
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    Source
    Journal of the American Society for Information Science and technology. 53(2002) no.3, S.220-231
    Year
    2002
  10. Ferret, O.; Grau, B.; Hurault-Plantet, M.; Illouz, G.; Jacquemin, C.; Monceaux, L.; Robba, I.; Vilnat, A.: How NLP can improve question answering (2002) 0.02 
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    Source
    Knowledge organization. 29(2002) nos.3/4, S.135-155
    Year
    2002
  11. Maglaughlin, K.L.; Sonnenwald, D.H.: User perspectives an relevance criteria : a comparison among relevant, partially relevant, and not-relevant judgements (2002) 0.02 
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    Source
    Journal of the American Society for Information Science and technology. 53(2002) no.5, S.327-342
    Year
    2002
  12. Mielke, B.: Wider einige gängige Ansichten zur juristischen Informationserschließung (2002) 0.02 
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    Source
    Information und Mobilität: Optimierung und Vermeidung von Mobilität durch Information. Proceedings des 8. Internationalen Symposiums für Informationswissenschaft (ISI 2002), 7.-10.10.2002, Regensburg. Hrsg.: Rainer Hammwöhner, Christian Wolff, Christa Womser-Hacker
    Year
    2002
  13. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.02 
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    Date
    11. 8.2001 16:22:19
  14. Radev, D.R.; Libner, K.; Fan, W.: Getting answers to natural language questions on the Web (2002) 0.01 
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    Source
    Journal of the American Society for Information Science and technology. 53(2002) no.5, S.359-364
    Year
    2002
  15. Kekäläinen, J.; Järvelin, K.: Using graded relevance assessments in IR evaluation (2002) 0.01 
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    Journal of the American Society for Information Science and technology. 53(2002) no.13, S.1120-xxxx
    Year
    2002
  16. Eastman, C.M.: 30,000 hits may be better than 300 : precision anomalies in Internet searches (2002) 0.01 
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    Source
    Journal of the American Society for Information Science and Technology. 53(2002) no.11, S.879-882
    Year
    2002
  17. Oberhauser, O.; Labner, J.: OPAC-Erweiterung durch automatische Indexierung : Empirische Untersuchung mit Daten aus dem Österreichischen Verbundkatalog (2002) 0.01 
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    Year
    2002
  18. Ruthven, I.; Lalmas, M.; Rijsbergen, K. van: Combining and selecting characteristics of information use (2002) 0.01 
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    Source
    Journal of the American Society for Information Science and technology. 53(2002) no.5, S.378-396
    Year
    2002
  19. Serrano Cobos, J.; Quintero Orta, A.: Design, development and management of an information recovery system for an Internet Website : from documentary theory to practice (2003) 0.01 
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    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
  20. Abdou, S.; Savoy, J.: Searching in Medline : query expansion and manual indexing evaluation (2008) 0.01 
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    Abstract
    Based on a relatively large subset representing one third of the Medline collection, this paper evaluates ten different IR models, including recent developments in both probabilistic and language models. We show that the best performing IR models is a probabilistic model developed within the Divergence from Randomness framework [Amati, G., & van Rijsbergen, C.J. (2002) Probabilistic models of information retrieval based on measuring the divergence from randomness. ACM-Transactions on Information Systems 20(4), 357-389], which result in 170% enhancements in mean average precision when compared to the classical tf idf vector-space model. This paper also reports on our impact evaluations on the retrieval effectiveness of manually assigned descriptors (MeSH or Medical Subject Headings), showing that by including these terms retrieval performance can improve from 2.4% to 13.5%, depending on the underling IR model. Finally, we design a new general blind-query expansion approach showing improved retrieval performances compared to those obtained using the Rocchio approach.

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