Search (19 results, page 1 of 1)

  • × year_i:[2000 TO 2010}
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  1. Klas, C.-P.; Fuhr, N.; Schaefer, A.: Evaluating strategic support for information access in the DAFFODIL system (2004) 0.04
    0.037990816 = product of:
      0.07598163 = sum of:
        0.07598163 = sum of:
          0.03899358 = weight(_text_:p in 2419) [ClassicSimilarity], result of:
            0.03899358 = score(doc=2419,freq=2.0), product of:
              0.16359726 = queryWeight, product of:
                3.5955126 = idf(docFreq=3298, maxDocs=44218)
                0.045500398 = queryNorm
              0.23835106 = fieldWeight in 2419, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5955126 = idf(docFreq=3298, maxDocs=44218)
                0.046875 = fieldNorm(doc=2419)
          0.036988053 = weight(_text_:22 in 2419) [ClassicSimilarity], result of:
            0.036988053 = score(doc=2419,freq=2.0), product of:
              0.15933464 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.045500398 = queryNorm
              0.23214069 = fieldWeight in 2419, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046875 = fieldNorm(doc=2419)
      0.5 = coord(1/2)
    
    Date
    16.11.2008 16:22:48
  2. Boyack, K.W.; Wylie,B.N.; Davidson, G.S.: Information Visualization, Human-Computer Interaction, and Cognitive Psychology : Domain Visualizations (2002) 0.02
    0.02179542 = product of:
      0.04359084 = sum of:
        0.04359084 = product of:
          0.08718168 = sum of:
            0.08718168 = weight(_text_:22 in 1352) [ClassicSimilarity], result of:
              0.08718168 = score(doc=1352,freq=4.0), product of:
                0.15933464 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045500398 = queryNorm
                0.54716086 = fieldWeight in 1352, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1352)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 2.2003 17:25:39
    22. 2.2003 18:17:40
  3. Sacco, G.M.: Dynamic taxonomies and guided searches (2006) 0.02
    0.015256795 = product of:
      0.03051359 = sum of:
        0.03051359 = product of:
          0.06102718 = sum of:
            0.06102718 = weight(_text_:22 in 5295) [ClassicSimilarity], result of:
              0.06102718 = score(doc=5295,freq=4.0), product of:
                0.15933464 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045500398 = queryNorm
                0.38301262 = fieldWeight in 5295, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5295)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 17:56:22
  4. Bhogal, J.; Macfarlane, A.; Smith, P.: ¬A review of ontology based query expansion (2007) 0.01
    0.011373127 = product of:
      0.022746254 = sum of:
        0.022746254 = product of:
          0.045492508 = sum of:
            0.045492508 = weight(_text_:p in 919) [ClassicSimilarity], result of:
              0.045492508 = score(doc=919,freq=2.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.27807623 = fieldWeight in 919, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=919)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  5. Faaborg, A.; Lagoze, C.: Semantic browsing (2003) 0.01
    0.010788183 = product of:
      0.021576365 = sum of:
        0.021576365 = product of:
          0.04315273 = sum of:
            0.04315273 = weight(_text_:22 in 1026) [ClassicSimilarity], result of:
              0.04315273 = score(doc=1026,freq=2.0), product of:
                0.15933464 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045500398 = queryNorm
                0.2708308 = fieldWeight in 1026, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=1026)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Research and advanced technology for digital libraries : 7th European Conference, proceedings / ECDL 2003, Trondheim, Norway, August 17-22, 2003
  6. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie (2005) 0.01
    0.010788183 = product of:
      0.021576365 = sum of:
        0.021576365 = product of:
          0.04315273 = sum of:
            0.04315273 = weight(_text_:22 in 1852) [ClassicSimilarity], result of:
              0.04315273 = score(doc=1852,freq=2.0), product of:
                0.15933464 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045500398 = queryNorm
                0.2708308 = fieldWeight in 1852, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=1852)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    11. 2.2011 18:22:58
  7. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie : Ontologie-basiertes Information-Filtering und -Retrieval mit relationalen Datenbanken (2005) 0.01
    0.010788183 = product of:
      0.021576365 = sum of:
        0.021576365 = product of:
          0.04315273 = sum of:
            0.04315273 = weight(_text_:22 in 4324) [ClassicSimilarity], result of:
              0.04315273 = score(doc=4324,freq=2.0), product of:
                0.15933464 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045500398 = queryNorm
                0.2708308 = fieldWeight in 4324, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4324)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    11. 2.2011 18:22:25
  8. Vallet, D.; Fernández, M.; Castells, P.: ¬An ontology-based information retrieval model (2005) 0.01
    0.009748395 = product of:
      0.01949679 = sum of:
        0.01949679 = product of:
          0.03899358 = sum of:
            0.03899358 = weight(_text_:p in 4708) [ClassicSimilarity], result of:
              0.03899358 = score(doc=4708,freq=2.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.23835106 = fieldWeight in 4708, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4708)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  9. Wang, Y.-H.; Jhuo, P.-S.: ¬A semantic faceted search with rule-based inference (2009) 0.01
    0.009748395 = product of:
      0.01949679 = sum of:
        0.01949679 = product of:
          0.03899358 = sum of:
            0.03899358 = weight(_text_:p in 540) [ClassicSimilarity], result of:
              0.03899358 = score(doc=540,freq=2.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.23835106 = fieldWeight in 540, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.046875 = fieldNorm(doc=540)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  10. Quiroga, L.M.; Mostafa, J.: ¬An experiment in building profiles in information filtering : the role of context of user relevance feedback (2002) 0.01
    0.008123662 = product of:
      0.016247325 = sum of:
        0.016247325 = product of:
          0.03249465 = sum of:
            0.03249465 = weight(_text_:p in 2579) [ClassicSimilarity], result of:
              0.03249465 = score(doc=2579,freq=2.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.19862589 = fieldWeight in 2579, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2579)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    An experiment was conducted to see how relevance feedback could be used to build and adjust profiles to improve the performance of filtering systems. Data was collected during the system interaction of 18 graduate students with SIFTER (Smart Information Filtering Technology for Electronic Resources), a filtering system that ranks incoming information based on users' profiles. The data set came from a collection of 6000 records concerning consumer health. In the first phase of the study, three different modes of profile acquisition were compared. The explicit mode allowed users to directly specify the profile; the implicit mode utilized relevance feedback to create and refine the profile; and the combined mode allowed users to initialize the profile and to continuously refine it using relevance feedback. Filtering performance, measured in terms of Normalized Precision, showed that the three approaches were significantly different ( [small alpha, Greek] =0.05 and p =0.012). The explicit mode of profile acquisition consistently produced superior results. Exclusive reliance on relevance feedback in the implicit mode resulted in inferior performance. The low performance obtained by the implicit acquisition mode motivated the second phase of the study, which aimed to clarify the role of context in relevance feedback judgments. An inductive content analysis of thinking aloud protocols showed dimensions that were highly situational, establishing the importance context plays in feedback relevance assessments. Results suggest the need for better representation of documents, profiles, and relevance feedback mechanisms that incorporate dimensions identified in this research.
  11. Sihvonen, A.; Vakkari, P.: Subject knowledge improves interactive query expansion assisted by a thesaurus (2004) 0.01
    0.008123662 = product of:
      0.016247325 = sum of:
        0.016247325 = product of:
          0.03249465 = sum of:
            0.03249465 = weight(_text_:p in 4417) [ClassicSimilarity], result of:
              0.03249465 = score(doc=4417,freq=2.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.19862589 = fieldWeight in 4417, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4417)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  12. Li, D.; Kwong, C.-P.; Lee, D.L.: Unified linear subspace approach to semantic analysis (2009) 0.01
    0.008123662 = product of:
      0.016247325 = sum of:
        0.016247325 = product of:
          0.03249465 = sum of:
            0.03249465 = weight(_text_:p in 3321) [ClassicSimilarity], result of:
              0.03249465 = score(doc=3321,freq=2.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.19862589 = fieldWeight in 3321, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3321)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  13. Schaefer, A.; Jordan, M.; Klas, C.-P.; Fuhr, N.: Active support for query formulation in virtual digital libraries : a case study with DAFFODIL (2005) 0.01
    0.008123662 = product of:
      0.016247325 = sum of:
        0.016247325 = product of:
          0.03249465 = sum of:
            0.03249465 = weight(_text_:p in 4296) [ClassicSimilarity], result of:
              0.03249465 = score(doc=4296,freq=2.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.19862589 = fieldWeight in 4296, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4296)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  14. Baofu, P.: ¬The future of information architecture : conceiving a better way to understand taxonomy, network, and intelligence (2008) 0.01
    0.008123662 = product of:
      0.016247325 = sum of:
        0.016247325 = product of:
          0.03249465 = sum of:
            0.03249465 = weight(_text_:p in 2257) [ClassicSimilarity], result of:
              0.03249465 = score(doc=2257,freq=2.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.19862589 = fieldWeight in 2257, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2257)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  15. Song, D.; Bruza, P.D.: Towards context sensitive information inference (2003) 0.01
    0.007705845 = product of:
      0.01541169 = sum of:
        0.01541169 = product of:
          0.03082338 = sum of:
            0.03082338 = weight(_text_:22 in 1428) [ClassicSimilarity], result of:
              0.03082338 = score(doc=1428,freq=2.0), product of:
                0.15933464 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045500398 = queryNorm
                0.19345059 = fieldWeight in 1428, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1428)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 3.2003 19:35:46
  16. Shiri, A.A.; Revie, C.: Query expansion behavior within a thesaurus-enhanced search environment : a user-centered evaluation (2006) 0.01
    0.007705845 = product of:
      0.01541169 = sum of:
        0.01541169 = product of:
          0.03082338 = sum of:
            0.03082338 = weight(_text_:22 in 56) [ClassicSimilarity], result of:
              0.03082338 = score(doc=56,freq=2.0), product of:
                0.15933464 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045500398 = queryNorm
                0.19345059 = fieldWeight in 56, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=56)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 16:32:43
  17. Case, D.O.: Looking for information : a survey on research on information seeking, needs, and behavior (2002) 0.01
    0.0068931566 = product of:
      0.013786313 = sum of:
        0.013786313 = product of:
          0.027572626 = sum of:
            0.027572626 = weight(_text_:p in 1270) [ClassicSimilarity], result of:
              0.027572626 = score(doc=1270,freq=4.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.16853966 = fieldWeight in 1270, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.0234375 = fieldNorm(doc=1270)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Footnote
    Rez. in: JASIST 54(2003) no.7, S.695-697 (R. Savolainen): "Donald O. Case has written an ambitious book to create an overall picture of the major approaches to information needs and seeking (INS) studies. The aim to write an extensive review is reflected in the list of references containing about 700 items. The high ambitions are explained an p. 14, where Case states that he is aiming at a multidisciplinary understanding of the concept of information seeking. In the Preface, the author characterizes his book as an introduction to the topic for students at the graduate level, as well as as a review and handbook for scholars engagged in information behavior research. In my view, Looking for Information is particularly welcome as an academic textbook because the field of INS studies suffers from the lack of monographs. Along with the continuous growth of the number of journal articles and conference papers, there is a genuine need for a book that picks up the numerous pieces and puts them together. The use of the study as a textbook is facilitated by clearly delineated sections an major themes and the wealth of concrete examples of information seeking in everyday contexts. The book is lucidly written and it is accessible to novice readers, too. At first glance, the idea of providing a comprehensive review of INS studies may seem a mission impossible because the current number of articles, papers, and other contributions in this field is nearing the 10,000 range (p. 224). Donald Case is not alone in the task of coming to grips with an increasing number of studies; similar problems have been faced by those writing INS-related chapters for the Annual Review of Information Science and Technology (ARIST). Case has solved the problem of "too many publications to be reviewed" by concentrating an the INS literature published during the last two decades. Secondly, studies an library use and information retrieval are discussed only to a limited extent. In addition, Case is highly selective as to studies focusing an the use of specific sources and channels such as WWW. These delineations are reasonable, even though they beg some questions. First, how should one draw the line between studies an information seeking and information retrieval? Case does not discuss this question in greater detail, although in recent years, the overlapping areas of information seeking and retrieval studies have been broadened, along with the growing importance of WWW in information seeking/retrieval. Secondly, how can one define the concept of information searching (or, more specifically, Internet or Web searching) in relation to information seeking and information retrieval? In the field of Web searching studies, there is an increasing number of contributions that are of direct relevance to information-seeking studies. Clearly, the advent of the Internet, particularly, the Web, has blurred the previous lines between INS and IR literature, making them less clear cut. The book consists of five main sections, and comprises 13 chapters. There is an Appendix serving the needs of an INS textbook (questions for discussion and application). The structure of the book is meticulously planned and, as a whole, it offers a sufficiently balanced contribution to theoretical, methodological, and empirical issues of INS. The title, Looking for Information: A Survey of Research an Information Seeking, Needs, and Behavior aptly describes the main substance of the book. . . . It is easy to agree with Case about the significance of the problem of specialization and fragmentation. This problem seems to be concomitant with the broadening field of INS research. In itself, Case's book can be interpreted as a struggle against this fragmentation. His book suggests that this struggle is not hopeless and that it is still possible to draw an overall picture of the evolving research field. The major pieces of the puzzle were found and the book will provide a useful overview of INS studies for many years."
  18. Bradford, R.B.: Relationship discovery in large text collections using Latent Semantic Indexing (2006) 0.01
    0.006164676 = product of:
      0.012329352 = sum of:
        0.012329352 = product of:
          0.024658704 = sum of:
            0.024658704 = weight(_text_:22 in 1163) [ClassicSimilarity], result of:
              0.024658704 = score(doc=1163,freq=2.0), product of:
                0.15933464 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045500398 = queryNorm
                0.15476047 = fieldWeight in 1163, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03125 = fieldNorm(doc=1163)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Proceedings of the Fourth Workshop on Link Analysis, Counterterrorism, and Security, SIAM Data Mining Conference, Bethesda, MD, 20-22 April, 2006. [http://www.siam.org/meetings/sdm06/workproceed/Link%20Analysis/15.pdf]
  19. Ingwersen, P.; Järvelin, K.: ¬The turn : integration of information seeking and retrieval in context (2005) 0.00
    0.004061831 = product of:
      0.008123662 = sum of:
        0.008123662 = product of:
          0.016247325 = sum of:
            0.016247325 = weight(_text_:p in 1323) [ClassicSimilarity], result of:
              0.016247325 = score(doc=1323,freq=2.0), product of:
                0.16359726 = queryWeight, product of:
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.045500398 = queryNorm
                0.099312946 = fieldWeight in 1323, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5955126 = idf(docFreq=3298, maxDocs=44218)
                  0.01953125 = fieldNorm(doc=1323)
          0.5 = coord(1/2)
      0.5 = coord(1/2)