Search (28 results, page 1 of 2)

  • × type_ss:"r"
  1. Efthimiadis, E.N.: Approaches to search formulation and query expansion in information systems : DRS, DBMS, ES (1992) 0.06
    0.055522382 = product of:
      0.16656715 = sum of:
        0.16656715 = weight(_text_:query in 3871) [ClassicSimilarity], result of:
          0.16656715 = score(doc=3871,freq=4.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.7261926 = fieldWeight in 3871, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.078125 = fieldNorm(doc=3871)
      0.33333334 = coord(1/3)
    
    Abstract
    Discusses the ways in which systems and/or users formulate and reformulate searches in documents retrieval systems (DRS), database management systems (DBMS) and expert systems (ES). Concludes that query formulation and reformulation has been neglected in these fields
  2. Walker, S.; DeVere, R.: Improving subject retrieval in online catalogues : T.2: Relevance feedback and query expansion (1990) 0.06
    0.055522382 = product of:
      0.16656715 = sum of:
        0.16656715 = weight(_text_:query in 1816) [ClassicSimilarity], result of:
          0.16656715 = score(doc=1816,freq=4.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.7261926 = fieldWeight in 1816, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.078125 = fieldNorm(doc=1816)
      0.33333334 = coord(1/3)
    
    Content
    1. Introduction // 2. Query modification through relevance feedback // 3. System design & description 4. Evaluation // 5. Analysis & results // 6. Conclusions and recommendations
  3. Robertson, A.M.; Willett, P.: Use of genetic algorithms in information retrieval (1995) 0.04
    0.04441791 = product of:
      0.13325372 = sum of:
        0.13325372 = weight(_text_:query in 2418) [ClassicSimilarity], result of:
          0.13325372 = score(doc=2418,freq=4.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.5809541 = fieldWeight in 2418, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.0625 = fieldNorm(doc=2418)
      0.33333334 = coord(1/3)
    
    Abstract
    Reviews the basic techniques involving genetic algorithms and their application to 2 problems in information retrieval: the generation of equifrequent groups of index terms; and the identification of optimal query and term weights. The algorithm developed for the generation of equifrequent groupings proved to be effective in operation, achieving results comparable with those obtained using a good deterministic algorithm. The algorithm developed for the identification of optimal query and term weighting involves fitness function that is based on full relevance information
  4. Hildebrand, M.; Ossenbruggen, J. van; Hardman, L.: ¬An analysis of search-based user interaction on the Semantic Web (2007) 0.04
    0.03886567 = product of:
      0.116597004 = sum of:
        0.116597004 = weight(_text_:query in 59) [ClassicSimilarity], result of:
          0.116597004 = score(doc=59,freq=4.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.5083348 = fieldWeight in 59, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.0546875 = fieldNorm(doc=59)
      0.33333334 = coord(1/3)
    
    Abstract
    Many Semantic Web applications provide access to their resources through text-based search queries, using explicit semantics to improve the search results. This paper provides an analysis of the current state of the art in semantic search, based on 35 existing systems. We identify different types of semantic search features that are used during query construction, the core search process, the presentation of the search results and user feedback on query and results. For each of these, we consider the functionality that the system provides and how this is made available through the user interface.
  5. Treglown, M.: HIBROWSE for bibliographic databases : a study of the application of usability techniques in view-based searching (1997) 0.03
    0.03400038 = product of:
      0.10200114 = sum of:
        0.10200114 = weight(_text_:query in 767) [ClassicSimilarity], result of:
          0.10200114 = score(doc=767,freq=6.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.44470036 = fieldWeight in 767, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.0390625 = fieldNorm(doc=767)
      0.33333334 = coord(1/3)
    
    Abstract
    View based searching and multi view searching using HIBROWSE proposes a new paradigm for information retrieval from bibliographic databases and database management systems. The paradigm replaces command line and form based interaction with query specification and interaction which requires the user to identify views relating to query facets of the subject of their query. Attempted to apply techniques from human-computer interaction design in the development, construction and usability evaluation of a view based searching system for a very large bibliographic database. As the development of the HIBROWSE system had been in progress before usability became a major concern, as well as the class of system being developed, greater progress towards improved usability was made by adopting a less structured development life-cycle. Examined the usefulness of a number of usability evaluation methods in the context of trying to determine the usability of designs in interactive information retrieval systems. Measurement of the subjective usability of prototypes reinforced the finding of users' difficulties in forming a useful account of the system behaviour and functionality from the training material provided, highlighted some aspects of the system that could be improved, and the greater usability of the HIBROWSE prototypes over an extant commercial bibliographic database system
  6. Beaulieu, M.; Payne, A.; Do, T.; Jones, S.: ENQUIRE Okapi project (1996) 0.03
    0.03331343 = product of:
      0.09994029 = sum of:
        0.09994029 = weight(_text_:query in 3369) [ClassicSimilarity], result of:
          0.09994029 = score(doc=3369,freq=4.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.43571556 = fieldWeight in 3369, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.046875 = fieldNorm(doc=3369)
      0.33333334 = coord(1/3)
    
    Abstract
    The ENQUIRE project forms part of a series of investigations on query expansion in the Okapi experimental text retrieval system. A configurable user interface was implemented as an evaluative tool and tested in two locations on two different databases: the library catalogue of The London Business SChool and the computing section of INSPEC. The system offered a range of possible strategies based on thesaural terms for reformulating queries. These could be initiated automatically by the system or interactively with the user. The formative phase of the evaluation established the appropriateness and usability of the interface as well as users' perceptions of the underlying functionality. The aim of the large scale field trial was to determine to what extent user would select thesaural terms suggested by the system to reformulate queries, and to evaluate the effectiveness of a new dynamic form of query expansion implemented for this project
  7. Robertson, A.M.; Willett, P.: Identification of word-variants in historical text databases : report for the period October 1990 to September 1992 (1994) 0.03
    0.031408206 = product of:
      0.09422461 = sum of:
        0.09422461 = weight(_text_:query in 939) [ClassicSimilarity], result of:
          0.09422461 = score(doc=939,freq=2.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.41079655 = fieldWeight in 939, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.0625 = fieldNorm(doc=939)
      0.33333334 = coord(1/3)
    
    Abstract
    Databases of historical texts are increasingly becoming available for end user searching via online or CD-ROM databases. Many of the words in these databases are spelt differently from today with resultant loss of retrieval. The project evaluated a range of techniques that can suggest historical variants of modern language query words, the work deriving from earlier work on spelling correction
  8. Hellweg, H.; Krause, J.; Mandl, T.; Marx, J.; Müller, M.N.O.; Mutschke, P.; Strötgen, R.: Treatment of semantic heterogeneity in information retrieval (2001) 0.03
    0.031408206 = product of:
      0.09422461 = sum of:
        0.09422461 = weight(_text_:query in 6560) [ClassicSimilarity], result of:
          0.09422461 = score(doc=6560,freq=2.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.41079655 = fieldWeight in 6560, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.0625 = fieldNorm(doc=6560)
      0.33333334 = coord(1/3)
    
    Abstract
    Nowadays, users of information services are faced with highly decentralised, heterogeneous document sources with different content analysis. Semantic heterogeneity occurs e.g. when resources using different systems for content description are searched using a simple query system. This report describes several approaches of handling semantic heterogeneity used in projects of the German Social Science Information Centre
  9. Keen, E.M.: Interactive ranked retrieval (1995) 0.03
    0.027482178 = product of:
      0.08244653 = sum of:
        0.08244653 = weight(_text_:query in 2419) [ClassicSimilarity], result of:
          0.08244653 = score(doc=2419,freq=2.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.35944697 = fieldWeight in 2419, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2419)
      0.33333334 = coord(1/3)
    
    Abstract
    Reports the design, building and testing of the Interactive Ranked Output Search Engine (IROSE), which includes as the main features: query reformulation, ranked output match options, field bias options, marking of must, minus, and truncated suppressed terms. Both DOS and Windows versions of IROSE were constructed and laboratory search tests were performed using 3 test collections of records with queries and relevance jedgements in the subject area of cystic fibrosis, library and information and current affairs. Concludes that there is substantial evidence of the quality of this approach to information retrieval and future tests are needed to redefine and improve the optionality and move to semi operational testing
  10. Greengrass, M.: Conflation methods for searching databases of Latin text (1996) 0.03
    0.027482178 = product of:
      0.08244653 = sum of:
        0.08244653 = weight(_text_:query in 6987) [ClassicSimilarity], result of:
          0.08244653 = score(doc=6987,freq=2.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.35944697 = fieldWeight in 6987, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.0546875 = fieldNorm(doc=6987)
      0.33333334 = coord(1/3)
    
    Abstract
    Describes the results of a project to develop conflation tools for searching databases of Latin text. Reports on the results of a questionnaire sent to 64 users of Latin text retrieval systems. Describes a Latin stemming algorithm that uses a simple longest match with some recoding but differs from most stemmers in its use of 2 separate suffix dictionaries for processing query and database words. Describes a retrieval system in which a user inputs the principal component of their search term, these components are stemmed and the resulting stems matched against the noun based and verb based stem dictionaries. Evaluates the system, describing its limitations, and a more complex system
  11. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬A graphical interface for OKAPI : the design and evaluation of an online catalogue system with direct manipulation interaction for subject access (1994) 0.03
    0.027482178 = product of:
      0.08244653 = sum of:
        0.08244653 = weight(_text_:query in 1318) [ClassicSimilarity], result of:
          0.08244653 = score(doc=1318,freq=2.0), product of:
            0.22937049 = queryWeight, product of:
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.049352113 = queryNorm
            0.35944697 = fieldWeight in 1318, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.6476326 = idf(docFreq=1151, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1318)
      0.33333334 = coord(1/3)
    
    Abstract
    A project to design a graphical user interface for the OKAPI online catalogue search system which uses the basic term weighting probabilistic search engine. Presents a research context of the project with a discussion of interface and functionality issues relating to the design of OPACs. Describes the design methodology and evaluation methodology. Presents the preliminary results of the field trial evaluation. Considers problems encountered in the field trial and discusses contributory factors to the effectiveness of interactive query expansion. Highlights the tension between usability and functionality in highly interactive retrieval and suggests further areas of research
  12. Modelle und Konzepte der Beitragsdokumentation und Filmarchivierung im Lokalfernsehsender Hamburg I : Endbericht (1996) 0.02
    0.017830748 = product of:
      0.053492244 = sum of:
        0.053492244 = product of:
          0.10698449 = sum of:
            0.10698449 = weight(_text_:22 in 7383) [ClassicSimilarity], result of:
              0.10698449 = score(doc=7383,freq=2.0), product of:
                0.1728227 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.049352113 = queryNorm
                0.61904186 = fieldWeight in 7383, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.125 = fieldNorm(doc=7383)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    22. 2.1997 19:46:30
  13. Wheelbarger, J.J.; Clouse, R.W.: ¬A comparision of a manual library reclassification project with a computer automated library reclassification project (1975) 0.02
    0.015601905 = product of:
      0.046805713 = sum of:
        0.046805713 = product of:
          0.09361143 = sum of:
            0.09361143 = weight(_text_:22 in 3473) [ClassicSimilarity], result of:
              0.09361143 = score(doc=3473,freq=2.0), product of:
                0.1728227 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.049352113 = queryNorm
                0.5416616 = fieldWeight in 3473, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=3473)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Pages
    22 S
  14. Matthews, J.R.; Parker, M.R.: Local Area Networks and Wide Area Networks for libraries (1995) 0.02
    0.015601905 = product of:
      0.046805713 = sum of:
        0.046805713 = product of:
          0.09361143 = sum of:
            0.09361143 = weight(_text_:22 in 2656) [ClassicSimilarity], result of:
              0.09361143 = score(doc=2656,freq=2.0), product of:
                0.1728227 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.049352113 = queryNorm
                0.5416616 = fieldWeight in 2656, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2656)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    30.11.1995 20:53:22
  15. Information for a new age : redefining the librarian (1995) 0.01
    0.013373061 = product of:
      0.040119182 = sum of:
        0.040119182 = product of:
          0.080238365 = sum of:
            0.080238365 = weight(_text_:22 in 2538) [ClassicSimilarity], result of:
              0.080238365 = score(doc=2538,freq=2.0), product of:
                0.1728227 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.049352113 = queryNorm
                0.46428138 = fieldWeight in 2538, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=2538)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Footnote
    Rez. in: Journal of academic librarianship 22(1996) no.2, S.147 (A. Schultis)
  16. Cleverdon, C.W.: ASLIB Cranfield Research Project : Report on the first stage of an investigation into the comparative efficiency of indexing systems (1960) 0.01
    0.013373061 = product of:
      0.040119182 = sum of:
        0.040119182 = product of:
          0.080238365 = sum of:
            0.080238365 = weight(_text_:22 in 6158) [ClassicSimilarity], result of:
              0.080238365 = score(doc=6158,freq=2.0), product of:
                0.1728227 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.049352113 = queryNorm
                0.46428138 = fieldWeight in 6158, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=6158)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Footnote
    Rez. in: College and research libraries 22(1961) no.3, S.228 (G. Jahoda)
  17. ¬The future of national bibliography (1997) 0.01
    0.013373061 = product of:
      0.040119182 = sum of:
        0.040119182 = product of:
          0.080238365 = sum of:
            0.080238365 = weight(_text_:22 in 1715) [ClassicSimilarity], result of:
              0.080238365 = score(doc=1715,freq=2.0), product of:
                0.1728227 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.049352113 = queryNorm
                0.46428138 = fieldWeight in 1715, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=1715)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Footnote
    Rez. in: Select newsletter 1998, no.22, S.8 (P. Robinson)
  18. Carey, K.; Stringer, R.: ¬The power of nine : a preliminary investigation into navigation strategies for the new library with special reference to disabled people (2000) 0.01
    0.013373061 = product of:
      0.040119182 = sum of:
        0.040119182 = product of:
          0.080238365 = sum of:
            0.080238365 = weight(_text_:22 in 234) [ClassicSimilarity], result of:
              0.080238365 = score(doc=234,freq=2.0), product of:
                0.1728227 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.049352113 = queryNorm
                0.46428138 = fieldWeight in 234, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=234)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Pages
    22 S
  19. Intellectual property and the National Information Infrastructure : a preliminary draft of the report of the Working Group on Intellectual Property Rights (1994) 0.01
    0.011144217 = product of:
      0.03343265 = sum of:
        0.03343265 = product of:
          0.0668653 = sum of:
            0.0668653 = weight(_text_:22 in 7306) [ClassicSimilarity], result of:
              0.0668653 = score(doc=7306,freq=2.0), product of:
                0.1728227 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.049352113 = queryNorm
                0.38690117 = fieldWeight in 7306, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=7306)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    22. 7.1996 19:53:48
  20. Drewer, P.; Massion, F; Pulitano, D: Was haben Wissensmodellierung, Wissensstrukturierung, künstliche Intelligenz und Terminologie miteinander zu tun? (2017) 0.01
    0.011144217 = product of:
      0.03343265 = sum of:
        0.03343265 = product of:
          0.0668653 = sum of:
            0.0668653 = weight(_text_:22 in 5576) [ClassicSimilarity], result of:
              0.0668653 = score(doc=5576,freq=2.0), product of:
                0.1728227 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.049352113 = queryNorm
                0.38690117 = fieldWeight in 5576, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=5576)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    13.12.2017 14:17:22