Search (397 results, page 1 of 20)

  • × theme_ss:"Retrievalstudien"
  1. Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000) 0.14
    0.14273989 = product of:
      0.21410984 = sum of:
        0.02470734 = weight(_text_:information in 6438) [ClassicSimilarity], result of:
          0.02470734 = score(doc=6438,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.27153665 = fieldWeight in 6438, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=6438)
        0.18940249 = sum of:
          0.09108625 = weight(_text_:management in 6438) [ClassicSimilarity], result of:
            0.09108625 = score(doc=6438,freq=2.0), product of:
              0.17470726 = queryWeight, product of:
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0518325 = queryNorm
              0.521365 = fieldWeight in 6438, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.109375 = fieldNorm(doc=6438)
          0.09831624 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
            0.09831624 = score(doc=6438,freq=2.0), product of:
              0.18150859 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.0518325 = queryNorm
              0.5416616 = fieldWeight in 6438, 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=6438)
      0.6666667 = coord(2/3)
    
    Date
    11. 8.2001 16:22:19
    Source
    Information processing and management. 36(2000) no.1, S.3-36
  2. Smithson, S.: Information retrieval evaluation in practice : a case study approach (1994) 0.08
    0.07960573 = product of:
      0.119408585 = sum of:
        0.02470734 = weight(_text_:information in 7302) [ClassicSimilarity], result of:
          0.02470734 = score(doc=7302,freq=8.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.27153665 = fieldWeight in 7302, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0546875 = fieldNorm(doc=7302)
        0.094701245 = sum of:
          0.045543127 = weight(_text_:management in 7302) [ClassicSimilarity], result of:
            0.045543127 = score(doc=7302,freq=2.0), product of:
              0.17470726 = queryWeight, product of:
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0518325 = queryNorm
              0.2606825 = fieldWeight in 7302, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0546875 = fieldNorm(doc=7302)
          0.04915812 = weight(_text_:22 in 7302) [ClassicSimilarity], result of:
            0.04915812 = score(doc=7302,freq=2.0), product of:
              0.18150859 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.0518325 = queryNorm
              0.2708308 = fieldWeight in 7302, 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=7302)
      0.6666667 = coord(2/3)
    
    Abstract
    The evaluation of information retrieval systems is an important yet difficult operation. This paper describes an exploratory evaluation study that takes an interpretive approach to evaluation. The longitudinal study examines evaluation through the information-seeking behaviour of 22 case studies of 'real' users. The eclectic approach to data collection produced behavioral data that is compared with relevance judgements and satisfaction ratings. The study demonstrates considerable variations among the cases, among different evaluation measures within the same case, and among the same measures at different stages within a single case. It is argued that those involved in evaluation should be aware of the difficulties, and base any evaluation on a good understanding of the cases in question
    Source
    Information processing and management. 30(1994) no.2, S.205-221
  3. Losee, R.M.: Determining information retrieval and filtering performance without experimentation (1995) 0.08
    0.077398956 = product of:
      0.116098434 = sum of:
        0.021397185 = weight(_text_:information in 3368) [ClassicSimilarity], result of:
          0.021397185 = score(doc=3368,freq=6.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.23515764 = fieldWeight in 3368, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3368)
        0.094701245 = sum of:
          0.045543127 = weight(_text_:management in 3368) [ClassicSimilarity], result of:
            0.045543127 = score(doc=3368,freq=2.0), product of:
              0.17470726 = queryWeight, product of:
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0518325 = queryNorm
              0.2606825 = fieldWeight in 3368, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0546875 = fieldNorm(doc=3368)
          0.04915812 = weight(_text_:22 in 3368) [ClassicSimilarity], result of:
            0.04915812 = score(doc=3368,freq=2.0), product of:
              0.18150859 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.0518325 = queryNorm
              0.2708308 = fieldWeight in 3368, 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=3368)
      0.6666667 = coord(2/3)
    
    Abstract
    The performance of an information retrieval or text and media filtering system may be determined through analytic methods as well as by traditional simulation or experimental methods. These analytic methods can provide precise statements about expected performance. They can thus determine which of 2 similarly performing systems is superior. For both a single query terms and for a multiple query term retrieval model, a model for comparing the performance of different probabilistic retrieval methods is developed. This method may be used in computing the average search length for a query, given only knowledge of database parameter values. Describes predictive models for inverse document frequency, binary independence, and relevance feedback based retrieval and filtering. Simulation illustrate how the single term model performs and sample performance predictions are given for single term and multiple term problems
    Date
    22. 2.1996 13:14:10
    Source
    Information processing and management. 31(1995) no.4, S.555-572
  4. Iivonen, M.: Consistency in the selection of search concepts and search terms (1995) 0.06
    0.06117424 = product of:
      0.09176136 = sum of:
        0.01058886 = weight(_text_:information in 1757) [ClassicSimilarity], result of:
          0.01058886 = score(doc=1757,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.116372846 = fieldWeight in 1757, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046875 = fieldNorm(doc=1757)
        0.081172496 = sum of:
          0.039036963 = weight(_text_:management in 1757) [ClassicSimilarity], result of:
            0.039036963 = score(doc=1757,freq=2.0), product of:
              0.17470726 = queryWeight, product of:
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0518325 = queryNorm
              0.22344214 = fieldWeight in 1757, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.046875 = fieldNorm(doc=1757)
          0.04213553 = weight(_text_:22 in 1757) [ClassicSimilarity], result of:
            0.04213553 = score(doc=1757,freq=2.0), product of:
              0.18150859 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.0518325 = queryNorm
              0.23214069 = fieldWeight in 1757, 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=1757)
      0.6666667 = coord(2/3)
    
    Abstract
    Considers intersearcher and intrasearcher consistency in the selection of search terms. Based on an empirical study where 22 searchers from 4 different types of search environments analyzed altogether 12 search requests of 4 different types in 2 separate test situations between which 2 months elapsed. Statistically very significant differences in consistency were found according to the types of search environments and search requests. Consistency was also considered according to the extent of the scope of search concept. At level I search terms were compared character by character. At level II different search terms were accepted as the same search concept with a rather simple evaluation of linguistic expressions. At level III, in addition to level II, the hierarchical approach of the search request was also controlled. At level IV different search terms were accepted as the same search concept with a broad interpretation of the search concept. Both intersearcher and intrasearcher consistency grew most immediately after a rather simple evaluation of linguistic impressions
    Source
    Information processing and management. 31(1995) no.2, S.173-190
  5. Petrelli, D.: On the role of user-centred evaluation in the advancement of interactive information retrieval (2008) 0.06
    0.06065999 = product of:
      0.090989985 = sum of:
        0.02334624 = weight(_text_:information in 2026) [ClassicSimilarity], result of:
          0.02334624 = score(doc=2026,freq=14.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.256578 = fieldWeight in 2026, product of:
              3.7416575 = tf(freq=14.0), with freq of:
                14.0 = termFreq=14.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2026)
        0.06764375 = sum of:
          0.032530803 = weight(_text_:management in 2026) [ClassicSimilarity], result of:
            0.032530803 = score(doc=2026,freq=2.0), product of:
              0.17470726 = queryWeight, product of:
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0518325 = queryNorm
              0.18620178 = fieldWeight in 2026, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2026)
          0.035112944 = weight(_text_:22 in 2026) [ClassicSimilarity], result of:
            0.035112944 = score(doc=2026,freq=2.0), product of:
              0.18150859 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.0518325 = queryNorm
              0.19345059 = fieldWeight in 2026, 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=2026)
      0.6666667 = coord(2/3)
    
    Abstract
    This paper discusses the role of user-centred evaluations as an essential method for researching interactive information retrieval. It draws mainly on the work carried out during the Clarity Project where different user-centred evaluations were run during the lifecycle of a cross-language information retrieval system. The iterative testing was not only instrumental to the development of a usable system, but it enhanced our knowledge of the potential, impact, and actual use of cross-language information retrieval technology. Indeed the role of the user evaluation was dual: by testing a specific prototype it was possible to gain a micro-view and assess the effectiveness of each component of the complex system; by cumulating the result of all the evaluations (in total 43 people were involved) it was possible to build a macro-view of how cross-language retrieval would impact on users and their tasks. By showing the richness of results that can be acquired, this paper aims at stimulating researchers into considering user-centred evaluations as a flexible, adaptable and comprehensive technique for investigating non-traditional information access systems.
    Footnote
    Beitrag eines Themenbereichs: Evaluation of Interactive Information Retrieval Systems
    Source
    Information processing and management. 44(2008) no.1, S.22-38
  6. Ravana, S.D.; Taheri, M.S.; Rajagopal, P.: Document-based approach to improve the accuracy of pairwise comparison in evaluating information retrieval systems (2015) 0.06
    0.05528497 = product of:
      0.08292745 = sum of:
        0.015283704 = weight(_text_:information in 2587) [ClassicSimilarity], result of:
          0.015283704 = score(doc=2587,freq=6.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.16796975 = fieldWeight in 2587, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2587)
        0.06764375 = sum of:
          0.032530803 = weight(_text_:management in 2587) [ClassicSimilarity], result of:
            0.032530803 = score(doc=2587,freq=2.0), product of:
              0.17470726 = queryWeight, product of:
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0518325 = queryNorm
              0.18620178 = fieldWeight in 2587, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0390625 = fieldNorm(doc=2587)
          0.035112944 = weight(_text_:22 in 2587) [ClassicSimilarity], result of:
            0.035112944 = score(doc=2587,freq=2.0), product of:
              0.18150859 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.0518325 = queryNorm
              0.19345059 = fieldWeight in 2587, 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=2587)
      0.6666667 = coord(2/3)
    
    Abstract
    Purpose The purpose of this paper is to propose a method to have more accurate results in comparing performance of the paired information retrieval (IR) systems with reference to the current method, which is based on the mean effectiveness scores of the systems across a set of identified topics/queries. Design/methodology/approach Based on the proposed approach, instead of the classic method of using a set of topic scores, the documents level scores are considered as the evaluation unit. These document scores are the defined document's weight, which play the role of the mean average precision (MAP) score of the systems as a significance test's statics. The experiments were conducted using the TREC 9 Web track collection. Findings The p-values generated through the two types of significance tests, namely the Student's t-test and Mann-Whitney show that by using the document level scores as an evaluation unit, the difference between IR systems is more significant compared with utilizing topic scores. Originality/value Utilizing a suitable test collection is a primary prerequisite for IR systems comparative evaluation. However, in addition to reusable test collections, having an accurate statistical testing is a necessity for these evaluations. The findings of this study will assist IR researchers to evaluate their retrieval systems and algorithms more accurately.
    Date
    20. 1.2015 18:30:22
    Source
    Aslib journal of information management. 67(2015) no.4, S.408-421
  7. Logan, E.: Cognitive styles and online behaviour of novice searchers (1990) 0.05
    0.053524166 = product of:
      0.08028625 = sum of:
        0.02823696 = weight(_text_:information in 6891) [ClassicSimilarity], result of:
          0.02823696 = score(doc=6891,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.3103276 = fieldWeight in 6891, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=6891)
        0.052049287 = product of:
          0.10409857 = sum of:
            0.10409857 = weight(_text_:management in 6891) [ClassicSimilarity], result of:
              0.10409857 = score(doc=6891,freq=2.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.5958457 = fieldWeight in 6891, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.125 = fieldNorm(doc=6891)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Information processing and management. 26(1990), S.503-510
  8. Cooper, W.S.: ¬The paradoxal role of unexamined documents in the evaluation of retrieval effectiveness (1976) 0.05
    0.053524166 = product of:
      0.08028625 = sum of:
        0.02823696 = weight(_text_:information in 2186) [ClassicSimilarity], result of:
          0.02823696 = score(doc=2186,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.3103276 = fieldWeight in 2186, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.125 = fieldNorm(doc=2186)
        0.052049287 = product of:
          0.10409857 = sum of:
            0.10409857 = weight(_text_:management in 2186) [ClassicSimilarity], result of:
              0.10409857 = score(doc=2186,freq=2.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.5958457 = fieldWeight in 2186, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.125 = fieldNorm(doc=2186)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Information processing and management. 12(1976), S.367-375
  9. Rajagopal, P.; Ravana, S.D.; Koh, Y.S.; Balakrishnan, V.: Evaluating the effectiveness of information retrieval systems using effort-based relevance judgment (2019) 0.05
    0.053415224 = product of:
      0.080122836 = sum of:
        0.01247909 = weight(_text_:information in 5287) [ClassicSimilarity], result of:
          0.01247909 = score(doc=5287,freq=4.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.13714671 = fieldWeight in 5287, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5287)
        0.06764375 = sum of:
          0.032530803 = weight(_text_:management in 5287) [ClassicSimilarity], result of:
            0.032530803 = score(doc=5287,freq=2.0), product of:
              0.17470726 = queryWeight, product of:
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0518325 = queryNorm
              0.18620178 = fieldWeight in 5287, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0390625 = fieldNorm(doc=5287)
          0.035112944 = weight(_text_:22 in 5287) [ClassicSimilarity], result of:
            0.035112944 = score(doc=5287,freq=2.0), product of:
              0.18150859 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.0518325 = queryNorm
              0.19345059 = fieldWeight in 5287, 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=5287)
      0.6666667 = coord(2/3)
    
    Date
    20. 1.2015 18:30:22
    Source
    Aslib journal of information management. 71(2019) no.1, S.2-17
  10. Cole, C.: Intelligent information retrieval : Part IV: Testing the timing of two information retrieval devices in a naturalistic setting (2001) 0.05
    0.05047857 = product of:
      0.07571785 = sum of:
        0.03668089 = weight(_text_:information in 365) [ClassicSimilarity], result of:
          0.03668089 = score(doc=365,freq=6.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.40312737 = fieldWeight in 365, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.09375 = fieldNorm(doc=365)
        0.039036963 = product of:
          0.078073926 = sum of:
            0.078073926 = weight(_text_:management in 365) [ClassicSimilarity], result of:
              0.078073926 = score(doc=365,freq=2.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.44688427 = fieldWeight in 365, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.09375 = fieldNorm(doc=365)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Information processing and management. 37(2001) no.1, S.163-182
  11. Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990) 0.05
    0.04924364 = product of:
      0.07386546 = sum of:
        0.02470734 = weight(_text_:information in 5089) [ClassicSimilarity], result of:
          0.02470734 = score(doc=5089,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.27153665 = fieldWeight in 5089, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=5089)
        0.04915812 = product of:
          0.09831624 = sum of:
            0.09831624 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
              0.09831624 = score(doc=5089,freq=2.0), product of:
                0.18150859 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0518325 = queryNorm
                0.5416616 = fieldWeight in 5089, 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=5089)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Date
    22. 7.2006 18:43:54
    Source
    Journal of the American Society for Information Science. 41(1990) no.4, S.272-281
  12. Evans, D.A.; Lefferts, R.G.: CLARIT-TREC experiments (1995) 0.05
    0.047309127 = product of:
      0.07096369 = sum of:
        0.02495818 = weight(_text_:information in 1912) [ClassicSimilarity], result of:
          0.02495818 = score(doc=1912,freq=4.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.27429342 = fieldWeight in 1912, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.078125 = fieldNorm(doc=1912)
        0.046005506 = product of:
          0.09201101 = sum of:
            0.09201101 = weight(_text_:management in 1912) [ClassicSimilarity], result of:
              0.09201101 = score(doc=1912,freq=4.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.5266582 = fieldWeight in 1912, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1912)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    Describes the following elements of the CLARIT system information management system: natural language processing, document indexing, vector space querying and query augmentation. Reports on the processing results carried out as part of the TREC-2 and into system parameterization. Results demonstrate high prescision and excellent recall, but the system is not yet optimized
    Source
    Information processing and management. 31(1995) no.3, S.385-395
  13. Ellis, D.: Progress and problems in information retrieval (1996) 0.05
    0.046963863 = product of:
      0.07044579 = sum of:
        0.042355437 = weight(_text_:information in 789) [ClassicSimilarity], result of:
          0.042355437 = score(doc=789,freq=18.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.46549135 = fieldWeight in 789, product of:
              4.2426405 = tf(freq=18.0), with freq of:
                18.0 = termFreq=18.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0625 = fieldNorm(doc=789)
        0.028090354 = product of:
          0.056180708 = sum of:
            0.056180708 = weight(_text_:22 in 789) [ClassicSimilarity], result of:
              0.056180708 = score(doc=789,freq=2.0), product of:
                0.18150859 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0518325 = queryNorm
                0.30952093 = fieldWeight in 789, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=789)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    An introduction to the principal generic approaches to information retrieval research with their associated concepts, models and systems, this text is designed to keep the information professional up to date with the major themes and developments that have preoccupied researchers in recent month in relation to textual and documentary retrieval systems.
    COMPASS
    Information retrieval
    Content
    First published 1991 as New horizons in information retrieval
    Date
    26. 7.2002 20:22:46
    Footnote
    Rez. in: Managing information 3(1996) no.10, S.49 (D. Bawden); Program 32(1998) no.2, S.190-192 (C. Revie)
    LCSH
    Information retrieval
    Subject
    Information retrieval
    Information retrieval
  14. Hersh, W.R.; Over, P.: Interactivity at the Text Retrieval Conference (TREC) (2001) 0.05
    0.046833646 = product of:
      0.07025047 = sum of:
        0.02470734 = weight(_text_:information in 5486) [ClassicSimilarity], result of:
          0.02470734 = score(doc=5486,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.27153665 = fieldWeight in 5486, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=5486)
        0.045543127 = product of:
          0.09108625 = sum of:
            0.09108625 = weight(_text_:management in 5486) [ClassicSimilarity], result of:
              0.09108625 = score(doc=5486,freq=2.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.521365 = fieldWeight in 5486, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.109375 = fieldNorm(doc=5486)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Information processing and management. 37(2001) no.3, S.365-367
  15. Over, P.: ¬The TREC interactive track : an annotated bibliography (2001) 0.05
    0.046833646 = product of:
      0.07025047 = sum of:
        0.02470734 = weight(_text_:information in 5572) [ClassicSimilarity], result of:
          0.02470734 = score(doc=5572,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.27153665 = fieldWeight in 5572, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=5572)
        0.045543127 = product of:
          0.09108625 = sum of:
            0.09108625 = weight(_text_:management in 5572) [ClassicSimilarity], result of:
              0.09108625 = score(doc=5572,freq=2.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.521365 = fieldWeight in 5572, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.109375 = fieldNorm(doc=5572)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Information processing and management. 37(2001) no.3, S.369-381
  16. Voorhees, E.M.: Variations in relevance judgements and the measurement of retrieval effectiveness (2000) 0.05
    0.046833646 = product of:
      0.07025047 = sum of:
        0.02470734 = weight(_text_:information in 8710) [ClassicSimilarity], result of:
          0.02470734 = score(doc=8710,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.27153665 = fieldWeight in 8710, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=8710)
        0.045543127 = product of:
          0.09108625 = sum of:
            0.09108625 = weight(_text_:management in 8710) [ClassicSimilarity], result of:
              0.09108625 = score(doc=8710,freq=2.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.521365 = fieldWeight in 8710, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.109375 = fieldNorm(doc=8710)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Information processing and management. 36(2000) no.5, S.697-716
  17. Rao, A.; Lu, A.; Meier, E.; Ahmed, S.; Pliske, D.: Query processing in TREC6 (2000) 0.05
    0.046833646 = product of:
      0.07025047 = sum of:
        0.02470734 = weight(_text_:information in 6420) [ClassicSimilarity], result of:
          0.02470734 = score(doc=6420,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.27153665 = fieldWeight in 6420, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=6420)
        0.045543127 = product of:
          0.09108625 = sum of:
            0.09108625 = weight(_text_:management in 6420) [ClassicSimilarity], result of:
              0.09108625 = score(doc=6420,freq=2.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.521365 = fieldWeight in 6420, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.109375 = fieldNorm(doc=6420)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Information processing and management. 36(2000) no.1, S.179-186
  18. Smeaton, A.F.: TREC-6: personal highlights (2000) 0.05
    0.046833646 = product of:
      0.07025047 = sum of:
        0.02470734 = weight(_text_:information in 6439) [ClassicSimilarity], result of:
          0.02470734 = score(doc=6439,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.27153665 = fieldWeight in 6439, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.109375 = fieldNorm(doc=6439)
        0.045543127 = product of:
          0.09108625 = sum of:
            0.09108625 = weight(_text_:management in 6439) [ClassicSimilarity], result of:
              0.09108625 = score(doc=6439,freq=2.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.521365 = fieldWeight in 6439, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.109375 = fieldNorm(doc=6439)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Information processing and management. 36(2000) no.1, S.87-94
  19. Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983) 0.04
    0.043786906 = product of:
      0.065680355 = sum of:
        0.030567408 = weight(_text_:information in 2417) [ClassicSimilarity], result of:
          0.030567408 = score(doc=2417,freq=6.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.3359395 = fieldWeight in 2417, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.078125 = fieldNorm(doc=2417)
        0.035112944 = product of:
          0.07022589 = sum of:
            0.07022589 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
              0.07022589 = score(doc=2417,freq=2.0), product of:
                0.18150859 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0518325 = queryNorm
                0.38690117 = fieldWeight in 2417, 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=2417)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Pages
    S.22-25
    Series
    Proceedings of the American Society for Information Science; vol. 20
    Source
    Productivity in the information age : proceedings of the 46th ASIS annual meeting, 1983. Ed.: Raymond F Vondra
  20. Robertson, S.E.; Walker, S.; Beaulieu, M.: Experimentation as a way of life : Okapi at TREC (2000) 0.04
    0.040143125 = product of:
      0.060214683 = sum of:
        0.02117772 = weight(_text_:information in 6030) [ClassicSimilarity], result of:
          0.02117772 = score(doc=6030,freq=2.0), product of:
            0.09099081 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.0518325 = queryNorm
            0.23274569 = fieldWeight in 6030, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.09375 = fieldNorm(doc=6030)
        0.039036963 = product of:
          0.078073926 = sum of:
            0.078073926 = weight(_text_:management in 6030) [ClassicSimilarity], result of:
              0.078073926 = score(doc=6030,freq=2.0), product of:
                0.17470726 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0518325 = queryNorm
                0.44688427 = fieldWeight in 6030, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.09375 = fieldNorm(doc=6030)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Information processing and management. 36(2000) no.1, S.95-108

Languages

Types

  • a 370
  • s 14
  • el 9
  • m 9
  • r 3
  • x 3
  • p 1
  • More… Less…