Search (54 results, page 2 of 3)

  • × theme_ss:"Retrievalstudien"
  • × year_i:[2000 TO 2010}
  1. Savoy , J.: Cross-language information retrieval : experiments based an CLEF 2000 corpora (2003) 0.00 
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    Abstract
    Search engines play an essential role in the usability of Internet-based information systems and without them the Web would be much less accessible, and at the very least would develop at a much slower rate. Given that non-English users now tend to make up the majority in this environment, our main objective is to analyze and evaluate the retrieval effectiveness of various indexing and search strategies based on test-collections written in four different languages: English, French, German, and Italian. Our second objective is to describe and evaluate various approaches that might be implemented in order to effectively access document collections written in another language. As a third objective, we will explore the underlying problems involved in searching document collections written in the four different languages, and we will suggest and evaluate different database merging strategies capable of providing the user with a single unique result list.
  2. Harman, D.K.: ¬The TREC test collections (2005) 0.00 
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    Date
    29. 3.1996 18:16:49
  3. Buckley, C.; Voorhees, E.M.: Retrieval system evaluation (2005) 0.00 
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    29. 3.1996 18:16:49
  4. Voiskunskii, V.G.: Evaluation of search results (2000) 0.00 
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    Source
    Encyclopedia of library and information science. Vol.66, [=Suppl.29]
  5. Harman, D.K.: ¬The TREC ad hoc experiments (2005) 0.00 
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    Date
    29. 3.1996 18:16:49
  6. Robertson, S.; Callan, J.: Routing and filtering (2005) 0.00 
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    29. 3.1996 18:16:49
  7. Beaulieu, M.: Approaches to user-based studies in information seeking and retrieval : a Sheffield perspective (2003) 0.00 
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    Source
    Journal of information science. 29(2003) no.4, S.239-248
  8. Harman, D.K.: Beyond English (2005) 0.00 
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    Date
    29. 3.1996 18:16:49
  9. Voorhees, E.M.; Garofolo, J.S.: Retrieving noisy text (2005) 0.00 
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    29. 3.1996 18:16:49
  10. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.00 
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    Date
    11. 8.2001 16:22:19
  11. Eastman, C.M.: 30,000 hits may be better than 300 : precision anomalies in Internet searches (2002) 0.00 
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    Abstract
    In this issue we begin with a paper where Eastman points out that conventional narrower queries (the use of conjunctions and phrases) in a web engine search will reduce returned number of hits but not necessarily increase precision in the top ranked documents in the return. Thus by precision anomalies Eastman means that search narrowing activity results in no precision change or a decrease in precision. Multiple queries with multiple engines were run by students for a three-year period and the formulation/engine combination was recorded as was the number of hits. Relevance was also recorded for the top ten and top twenty ranked retrievals. While narrower searches reduced total hits they did not usually improve precision. Initial high precision and poor query reformulation account for some of the results, as did Alta Vista's failure to use the ranking algorithm incorporated in its regular search in its advanced search feature. However, since the top listed returns often reoccurred in all formulations, it would seem that the ranking algorithms are doing a consistent job of practical precision ranking that is not improved by reformulation.
  12. Díaz, A.; García, A.; Gervás, P.: User-centred versus system-centred evaluation of a personalization system (2008) 0.00 
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    Abstract
    Some of the most popular measures to evaluate information filtering systems are usually independent of the users because they are based in relevance judgments obtained from experts. On the other hand, the user-centred evaluation allows showing the different impressions that the users have perceived about the system running. This work is focused on discussing the problem of user-centred versus system-centred evaluation of a Web content personalization system where the personalization is based on a user model that stores long term (section, categories and keywords) and short term interests (adapted from user provided feedback). The user-centred evaluation is based on questionnaires filled in by the users before and after using the system and the system-centred evaluation is based on the comparison between ranking of documents, obtained from the application of a multi-tier selection process, and binary relevance judgments collected previously from real users. The user-centred and system-centred evaluations performed with 106 users during 14 working days have provided valuable data concerning the behaviour of the users with respect to issues such as document relevance or the relative importance attributed to different ways of personalization. The results obtained shows general satisfaction on both the personalization processes (selection, adaptation and presentation) and the system as a whole.
  13. Voorhees, E.M.: Question answering in TREC (2005) 0.00 
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    Date
    29. 3.1996 18:16:49
  14. Cormack, G.V.; Clarke, C.L.A.; Palmer, C.R.; Lynam, T.R.: MultiText experiments for TREC (2005) 0.00 
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    29. 3.1996 18:16:49
  15. Dumais, S.T.; Belkin, N.J.: ¬The TREC interactive tracks : putting the user into search (2005) 0.00 
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  16. Allan, J.; Croft, W.B.; Callan, J.: ¬The University of Massachusetts and a dozen TRECs (2005) 0.00 
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    29. 3.1996 18:16:49
  17. Robertson, S.: How Okapi came to TREC (2005) 0.00 
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  18. Buckley, C.: ¬The SMART Project at TREC (2005) 0.00 
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    29. 3.1996 18:16:49
  19. Kwok, K.-L.: Ten years of ad hoc retrieval at TREC using PIRCS (2005) 0.00 
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  20. Hiemstra, D.; Kraaij, W.: ¬A language-modeling approach to TREC (2005) 0.00 
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    29. 3.1996 18:16:49

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