Search (21 results, page 1 of 2)

  • × theme_ss:"Volltextretrieval"
  1. Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989) 0.04 
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    Abstract
    Searches conducted as part of the MEDLINE/Full-Text Research Project revealed that the full-text data bases of clinical medical journal articles (CCML (Comprehensive Core Medical Library) from BRS Information Technologies, and MEDIS from Mead Data Central) did not retrieve all the relevant citations. An analysis of the data indicated that 204 relevant citations were retrieved only by MEDLINE. A comparison of the strategies used on the full-text data bases with the text of the articles of these 204 citations revealed that 2 reasons contributed to these failure. The searcher often constructed a restrictive strategy which resulted in the loss of relevant documents; and as in other kinds of retrieval, the problems of natural language caused the loss of relevant documents.
    Date
    9. 1.1996 10:22:31
  2. Melucci, M.: Passage retrieval : a probabilistic technique (1998) 0.03 
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    Abstract
    This paper presents a probabilistic technique to retrieve passages from texts having a large size or heterogeneous semantic content. The proposed technique is independent on any supporting auxiliary data, such as text structure, topic organization, or pre-defined text segments. A Bayesian framework implements the probabilistic technique. We carried out experiments to compare the probabilistique technique to one based on a text segmentation algorithm. In particular, the probabilistique technique is more effective than, or as effective as the one based on the text segmentation to retrieve small passages. Results show that passage size affects passage retrieval performance. Results do also suggest that text organization and query generality may have an impact on the difference in effectiveness between the two techniques
    Source
    Information processing and management. 34(1998) no.1, S.43-68
  3. Mallinson, P.: Developments in free text retrieval systems (1993) 0.02 
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    Abstract
    Describes a typical traditional 1989 free text system and discusses developments in data storage, in search strategy and in the storage and retrieval of real time data. Outlines the following areas in which free text systems are likely to develop: standards; integration; dynamic data exchange; improved user interfaces; and better retrieval methods
  4. Wildemuth, B.M.: Measures of success in searching a full-text fact base (1990) 0.02 
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    Abstract
    The traditional measures of online searching proficiency (recall and precision) are less appropriate when applied to the searching of full text databases. The pilot study investigated and evaluated 5 measures of overall success in searching a full text data bank. Data was drawn from INQUIRER searches conducted by medical students at North Carolina Univ. at Chapel Hill. INQUIRER ia an online database of facts and concepts in microbiology. The 5 measures were: success/failure; precision; search term overlap; number of search cycles; and time per search. Concludes that the last 4 measures look promising for the evaluation of fact data bases such as ENQUIRER
  5. Böhle, K.; Riehm, U.: German fulltexts in working contexts : empirical findings on how end-users make use of fulltext databases (1989) 0.01 
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    Abstract
    Reports the result of a brief review of West German full text data bases and a user survey of over 40 users in the fields of medicine, law and economics. Questions common assumptions about the advantages and disadvantages of full text data bases.
  6. Marcus, J.: Full text year in review : 1996 (1996) 0.01 
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    Abstract
    Reviews developments in full text databases in 1996. Online services are differentiated through quantity rather than niche specializations of content. Full text databases are appearing on the WWW. Examines examples of trade magazine on the WWW from the networking and data communications area. Covers: Networks World Fusion; Data Communications on the Web; Communications Week Interactive; Network Computing Online; LAN Times Online and LAN on the Web
  7. Schmidt, J.: Full-text searching : as seen from a non-bibliographic searcher's point of view (1989) 0.01 
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    Abstract
    Examines searching capabilities and search results relating to the same full text data base made available by: a host that offers a command language designed for searching bibliographic data bases and a host that provides search facilities that have been specially designed for full text retrieval. Moreover, the CD-ROM format of an encyclopedia is compared with the equivalent on-line version of the same work, Academic American Encyclopedia. Results reveal that it is easier to search on those systems that offer searching facilities which have been specially designed for full text retrieval.
  8. Allen, E.E.: Searching, naturally (1998) 0.01 
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    Abstract
    Selected bibliography of books and articles relating to natural language processing (NLP). Includes numerous annotations
  9. McKinin, E.J.; Sievert, M.E.; Johnson, D.; Mitchell, J.A.: ¬The Medline/full-text research project (1991) 0.01 
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    Abstract
    This project was designed to test the relative efficacy of index terms and full-text for the retrieval of documents in those MEDLINE journals for which full-text searching was also available. The full-text files used were MEDIS from Mead Data Central and CCML from BRS Information Technologies. One hundred clinical medical topics were searches in these two files as well as the MEDLINE file to accumulate the necessary data. It was found that full-text identified significantly more relevant articles than did the indexed file. Most relevant items missed in the full-text files, but identified in MEDLINE, were missed because the searcher failed to account for some aspect of natural language, used a logical or positional operator that was too restrictive, or included a concept which was implied, but not expressed in the natural language. Very few of the unique relevant full-text citations would have been retrievaed by title or abstract alone. Finally, as of July, 1990 the more current issue of a journal was just as likely to appear in MEDLINE as in one of the full-text files.
  10. Wacholder, N.; Byrd, R.J.: Retrieving information from full text using linguistic knowledge (1994) 0.01 
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    Abstract
    Examines how techniques in the field of natural language processing can be applied to the analysis of text in information retrieval. State of the art text searching programs cannot distinguish, for example, between occurrences of the sickness, AIDS and aids as tool or between library school and school nor equate such terms as online or on-line which are variants of the same form. To make these distinction, systems must incorporate knowledge about the meaning of words in context. Research in natural language processing has concentrated on the automatic 'understanding' of language; how to analyze the grammatical structure and meaning of text. Although many asoects of this research remain experimental, describes how these techniques to recognize spelling variants, names, acronyms, and abbreviations
  11. Molto, M.: Improving full text search performance through textual analysis (1993) 0.01 
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    Source
    Information processing and management. 29(1993) no.5, S.614-632
  12. Kristensen, J.: Expanding end-users' query statements for free text searching with a search-aid thesaurus (1993) 0.01 
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    Source
    Information processing and management. 29(1993) no.6, S.733-744
  13. Blair, D.C.; Maron, M.E.: Full-text information retrieval : further analysis and clarification (1990) 0.01 
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    Source
    Information processing and management. 26(1990), S.437-447
  14. Turtle, H.; Flood, J.: Query evaluation : strategies and optimizations (1995) 0.01 
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    Source
    Information processing and management. 31(1995) no.6, S.831-850
  15. Blair, D.C.: Full text retrieval : Evaluation and implications (1986) 0.01 
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    Abstract
    Recently, a detailed evaluation of a large, operational full-text document retrieval system was reported in the literature. Values of precision and recall were estimated usind traditional statistical sampling methods and blind evaluation procedures. The results of this evaluation demonstrated that the system tested was retrieving less then 20% of the relevant documents when the searchers believed it was retrieving over 75% of the relevant documents. This evaluation is described including some data not reported in the original article. Also discussed are the implications which this study has for how the subjects of documents should be represented, as well as the importance of rigorous retrieval evaluations for the furtherhance of information retrieval research
  16. Pearce, C.; Nicholas, C.: TELLTALE: Experiments in a dynamic hypertext environment for degraded and multilingual data (1996) 0.01 
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  17. Laegreid, J.A.: SIFT: a Norwegian information retrieval system (1993) 0.01 
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    Date
    23. 1.1999 19:22:09
  18. Reinisch, F.: Wer suchet - der findet? : oder Die Überwindung der sprachlichen Grenzen bei der Suche in Volltextdatenbanken (2000) 0.01 
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    Date
    22. 7.2000 17:48:06
  19. Zillmann, H.: OSIRIS und eLib : Information Retrieval und Search Engines in Full-text Databases (2001) 0.01 
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    Date
    14. 6.2001 12:22:31
  20. Dambeck, H.; Engler, T.: Gesucht und gefunden : Neun Volltext-Suchprogramme für den Desktop (2002) 0.01 
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    Source
    c't. 2002, H.22, S.190-197

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