Search (44 results, page 1 of 3)

  • × theme_ss:"Retrievalstudien"
  1. Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997) 0.10 
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    Abstract
    TREC ia an annual conference held in the USA devoted to electronic systems for large full text information searching. The conference deals with evaluation and comparison techniques developed since 1992 by participants from the research and industrial fields. The work of the conference is destined for designers (rather than users) of systems which access full text information. Describes the context, objectives, organization, evaluation methods and limits of TREC
    Date
    1. 8.1996 22:01:00
  2. Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.09 
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    Abstract
    A study was done to test the effectiveness of retrieval using title word searching. It was based on actual search profiles used in the Mechanized Information Center at Ohio State University, in order ro replicate as closely as possible actual searching conditions. Fewer than 50% of the relevant titles were retrieved by keywords in titles. The low rate of retrieval can be attributes to three sources: titles themselves, user and information specialist ignorance of the subject vocabulary in use, and to general language problems. Across fields it was found that the social sciences had the best retrieval rate, with science having the next best, and arts and humanities the lowest. Ways to enhance and supplement keyword in title searching on the computer and in printed indexes are discussed.
    Date
    14. 3.1996 13:22:21
  3. Feng, S.: ¬A comparative study of indexing languages in single and multidatabase searching (1989) 0.05 
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    Abstract
    An experiment was conducted using 3 data bases in library and information science - Library and Information Science Abstracts (LISA), Information Science Abstracts and ERIC - to investigate some of the main factors affecting on-line searching: effectiveness of search vocabularies, combinations of fields searched, and overlaps among databases. Natural language, controlled vocabulary and a mixture of natural language and controlled terms were tested using different fields of bibliographic records. Also discusses a comparative evaluation of single and multi-data base searching, measuring the overlap among data bases and their influence upon on-line searching.
  4. Peritz, B.C.: On the informativeness of titles (1984) 0.04 
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    Abstract
    The frequency of non-informative titles of journal articles was assessed for two fields: library and information science and sociology. The percentage of non informative titles was 21% in the formaer and 15% in the latter. In both fields, the non-informative titles, were concentratein only a few journals. The non-informative titles in library science were derived mainly from non-research journals. IN sociology the reasons for non-informative titles may be more complex; some of these journals are highly cited. For the improvement of retrievaleffiency the adoption of a policy encouraging informative titles (as in journals of chemistry) is recommended.
  5. Lancaster, F.W.: On the need for role indicators in postcoordinate retrieval systems (1968) 0.03 
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    Abstract
    A summary of the findings of various evaluations of role indicators is given. In general, the results have been negative in that little real evidence for the value of the devices has been presented. The need for roles in various subject fields and in very large systems, is discussed. They can only by justified on purely ecomic grounds - if the added cost involved in their use is offset by substantial reduction in the amount of output screening that must be done by the end user
  6. Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984) 0.03 
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    Date
    20.10.2000 12:22:23
  7. Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998) 0.03 
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    Source
    Online. 22(1998) no.6, S.57-58
  8. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.03 
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    Date
    11. 8.2001 16:22:19
  9. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.03 
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    Date
    22. 7.2006 18:43:54
  10. Janes, J.W.; McKinney, R.: Relevance judgements of actual users and secondary judges : a comparative study (1992) 0.03 
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    Abstract
    Examines judgements of relevance of document representations to query statements made by people other than the the originators of the queries. A small group of graduate students in the School of Information and Library Studies and undergraduates of Michigan Univ. judges sets of documents that had been retrieved for and judged by real users for a previous study. The assessment of relevance, by the secondary judges, were analysed by themselves and in comparison with the users' assessments. The judges performed reasonably well but some important differences were identified. Secondary judges use the various fields of document records in different ways than users and have a higher threshold of relevance
  11. Spink, A.: Term relevance feedback and mediated database searching : implications for information retrieval practice and systems design (1995) 0.03 
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    Abstract
    Research into both the algorithmic and human approaches to information retrieval is required to improve information retrieval system design and database searching effectiveness. Uses the human approach to examine the sources and effectiveness of search terms selected during mediated interactive information retrieval. Focuses on determining the retrieval effectiveness of search terms identified by users and intermediaries from retrieved items during term relevance feedback. Results show that termns selected from particular database fields of retrieved items during term relevance feedback (TRF) were more effective than search terms from the intermediarity, database thesauri or users' domain knowledge during the interaction, but not as effective as terms from the users' written question statements. Implications for the design and testing of automatic relevance feedback techniques that place greater emphasis on these sources and the practice of database searching are also discussed
  12. Bhattacharyya, K.: ¬The effectiveness of natural language in science indexing and retrieval (1974) 0.03 
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    Abstract
    This paper examines the implications of the findings of evaluative tests regarding the retrieval performance of natural language in various subject fields. It suggests parallel investigations into the structure of natural language, with particular reference to terminology, as used in the different branches of basic science. The criteria for defining the terminological consistency of a subject are formulated and a measure suggested for determining the degree of terminological consistency. The terminological and information structures of specific disciplines such as, chemistry, physics, botany, zoology, and geology; the circumstances in which terms originate; and the efforts made by the international scientific community to standardize the terminology in their respective disciplines - are examined in detail. This investigation shows why and how an artificially created scientific language finds it impossible to keep pace with current developments and thus points to the source of strength of natural language
  13. Rokaya, M.; Atlam, E.; Fuketa, M.; Dorji, T.C.; Aoe, J.-i.: Ranking of field association terms using Co-word analysis (2008) 0.03 
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    Abstract
    Information retrieval involves finding some desired information in a store of information or a database. In this paper, Co-word analysis will be used to achieve a ranking of a selected sample of FA terms. Based on this ranking a better arranging of search results can be achieved. Experimental results achieved using 41 MB of data (7660 documents) in the field of sports. The corpus was collected from CNN newspaper, sports field. This corpus was chosen to be distributed over 11 sub-fields of the field sports from the experimental results, the average precision increased by 18.3% after applying the proposed arranging scheme depending on the absolute frequency to count the terms weights, and the average precision increased by 17.2% after applying the proposed arranging scheme depending on a formula based on "TF*IDF" to count the terms weights.
  14. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.02 
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    Date
    27. 2.1999 20:55:22
  15. 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) 0.02 
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    Date
    27. 2.1999 20:59:22
  16. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.02 
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    Pages
    S.22-25
  17. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.02 
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    Date
    19. 3.1996 11:22:12
  18. Sanderson, M.: ¬The Reuters test collection (1996) 0.02 
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    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
  19. ¬The Fifth Text Retrieval Conference (TREC-5) (1997) 0.02 
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    Abstract
    Proceedings of the 5th TREC-confrerence held in Gaithersburgh, Maryland, Nov 20-22, 1996. Aim of the conference was discussion on retrieval techniques for large test collections. Different research groups used different techniques, such as automated thesauri, term weighting, natural language techniques, relevance feedback and advanced pattern matching, for information retrieval from the same large database. This procedure makes it possible to compare the results. The proceedings include papers, tables of the system results, and brief system descriptions including timing and storage information
  20. Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998) 0.02 
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    Source
    Online. 22(1998) no.3, S.24-26,28

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