Search (31 results, page 1 of 2)

  • × author_ss:"Robertson, S.E."
  1. Bovey, J.D.; Robertson, S.E.: ¬An algorithm for weighted searching on a Boolean system (1984) 0.01 
    0.011497798 = product of:
  0.06898679 = sum of:
    0.016351856 = weight(_text_:information in 788) [ClassicSimilarity], result of:
      0.016351856 = score(doc=788,freq=2.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.27153665 = fieldWeight in 788, 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=788)
    0.052634936 = weight(_text_:system in 788) [ClassicSimilarity], result of:
      0.052634936 = score(doc=788,freq=2.0), product of:
        0.10804188 = queryWeight, product of:
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.03430388 = queryNorm
        0.4871716 = fieldWeight in 788, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.109375 = fieldNorm(doc=788)
  0.16666667 = coord(2/12)
    Source
    Information technology: research and development. 3(1984) no.1, S.84-87
  2. Robertson, S.E.: OKAPI at TREC (1994) 0.01 
    0.0082127135 = product of:
  0.049276277 = sum of:
    0.011679897 = weight(_text_:information in 7952) [ClassicSimilarity], result of:
      0.011679897 = score(doc=7952,freq=2.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.19395474 = fieldWeight in 7952, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.078125 = fieldNorm(doc=7952)
    0.037596382 = weight(_text_:system in 7952) [ClassicSimilarity], result of:
      0.037596382 = score(doc=7952,freq=2.0), product of:
        0.10804188 = queryWeight, product of:
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.03430388 = queryNorm
        0.3479797 = fieldWeight in 7952, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.078125 = fieldNorm(doc=7952)
  0.16666667 = coord(2/12)
    Abstract
    Paper presented at the Text Retrieval Conference (TREC), Washington, DC, Nov 1992. Describes the OKAPI experimental text information retrieval system in terms of its design principles: the use of simple, robust and easy to use techniques which use best match searching and avoid Boolean logic
  3. Robertson, S.E.: OKAPI at TREC-1 (1994) 0.01 
    0.0082127135 = product of:
  0.049276277 = sum of:
    0.011679897 = weight(_text_:information in 7953) [ClassicSimilarity], result of:
      0.011679897 = score(doc=7953,freq=2.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.19395474 = fieldWeight in 7953, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.078125 = fieldNorm(doc=7953)
    0.037596382 = weight(_text_:system in 7953) [ClassicSimilarity], result of:
      0.037596382 = score(doc=7953,freq=2.0), product of:
        0.10804188 = queryWeight, product of:
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.03430388 = queryNorm
        0.3479797 = fieldWeight in 7953, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.078125 = fieldNorm(doc=7953)
  0.16666667 = coord(2/12)
    Abstract
    Describes the work carried out on the TREC-2 project following the results of the TREC-1 project. Experiments were conducted on the OKAPI experimental text information retrieval system which investigated a number of alternative probabilistic term weighting functions in place of the 'standard' Robertson Sparck Jones weighting functions used in TREC-1
  4. Robertson, S.E.: Overview of the Okapi projects (1997) 0.01 
    0.007710208 = product of:
  0.046261247 = sum of:
    0.016184142 = weight(_text_:information in 4703) [ClassicSimilarity], result of:
      0.016184142 = score(doc=4703,freq=6.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.2687516 = fieldWeight in 4703, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=4703)
    0.030077105 = weight(_text_:system in 4703) [ClassicSimilarity], result of:
      0.030077105 = score(doc=4703,freq=2.0), product of:
        0.10804188 = queryWeight, product of:
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.03430388 = queryNorm
        0.27838376 = fieldWeight in 4703, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.0625 = fieldNorm(doc=4703)
  0.16666667 = coord(2/12)
    Abstract
    Gives a brief description of the Okapi projects and of the work of the centre for Interactive Systems Research in the Department of Information Science at City University, London,UK, where these projects have been developed. Describes firstly one version of an information retrieval system which contains some of the central features of the Okapi projects, and follows this with an indication of the variety of systems now implemented or implementable within the present setup
    Footnote
    Contribution to a thematic issue on Okapi and information retrieval research
  5. Robertson, S.E.; Walker, S.; Hancock-Beaulieu, M.M.: Large test collection experiments of an operational, interactive system : OKAPI at TREC (1995) 0.01 
    0.0075657414 = product of:
  0.045394447 = sum of:
    0.008175928 = weight(_text_:information in 6964) [ClassicSimilarity], result of:
      0.008175928 = score(doc=6964,freq=2.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.13576832 = fieldWeight in 6964, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=6964)
    0.03721852 = weight(_text_:system in 6964) [ClassicSimilarity], result of:
      0.03721852 = score(doc=6964,freq=4.0), product of:
        0.10804188 = queryWeight, product of:
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.03430388 = queryNorm
        0.34448233 = fieldWeight in 6964, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.0546875 = fieldNorm(doc=6964)
  0.16666667 = coord(2/12)
    Abstract
    The Okapi system has been used in a series of experiments on the TREC collections, investiganting probabilistic methods, relevance feedback, and query expansion, and interaction issues. Some new probabilistic models have been developed, resulting in simple weigthing functions that take account of document length and within document and within query term frequency. All have been shown to be beneficial when based on large quantities of relevance data as in the routing task. Interaction issues are much more difficult to evaluate in the TREC framework, and no benefits have yet been demonstrated from feedback based on small numbers of 'relevant' items identified by intermediary searchers
    Source
    Information processing and management. 31(1995) no.3, S.345-360
  6. Robertson, S.E.: OKAPI at TREC-3 (1995) 0.01 
    0.005748899 = product of:
  0.034493394 = sum of:
    0.008175928 = weight(_text_:information in 5694) [ClassicSimilarity], result of:
      0.008175928 = score(doc=5694,freq=2.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.13576832 = fieldWeight in 5694, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5694)
    0.026317468 = weight(_text_:system in 5694) [ClassicSimilarity], result of:
      0.026317468 = score(doc=5694,freq=2.0), product of:
        0.10804188 = queryWeight, product of:
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.03430388 = queryNorm
        0.2435858 = fieldWeight in 5694, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5694)
  0.16666667 = coord(2/12)
    Abstract
    Reports text information retrieval experiments performed as part of the 3 rd round of Text Retrieval Conferences (TREC) using the Okapi online catalogue system at City University, UK. The emphasis in TREC-3 was: further refinement of term weighting functions; an investigation of run time passage determination and searching; expansion of ad hoc queries by terms extracted from the top documents retrieved by a trial search; new methods for choosing query expansion terms after relevance feedback, now split into methods of ranking terms prior to selection and subsequent selection procedures; and the development of a user interface procedure within the new TREC interactive search framework
  7. Robertson, S.E.; Thompson, C.L.: ¬An operational evaluation of weighting, ranking and relevance feedback via a front-end system (1987) 0.00 
    0.004386245 = product of:
  0.052634936 = sum of:
    0.052634936 = weight(_text_:system in 3858) [ClassicSimilarity], result of:
      0.052634936 = score(doc=3858,freq=2.0), product of:
        0.10804188 = queryWeight, product of:
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.03430388 = queryNorm
        0.4871716 = fieldWeight in 3858, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.109375 = fieldNorm(doc=3858)
  0.083333336 = coord(1/12)
  8. MacFarlane, A.; McCann, J.A.; Robertson, S.E.: Parallel methods for the update of partitioned inverted files (2007) 0.00 
    0.004337178 = product of:
  0.026023068 = sum of:
    0.02018312 = weight(_text_:web in 819) [ClassicSimilarity], result of:
      0.02018312 = score(doc=819,freq=2.0), product of:
        0.111951075 = queryWeight, product of:
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.03430388 = queryNorm
        0.18028519 = fieldWeight in 819, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2635105 = idf(docFreq=4597, maxDocs=44218)
          0.0390625 = fieldNorm(doc=819)
    0.0058399485 = weight(_text_:information in 819) [ClassicSimilarity], result of:
      0.0058399485 = score(doc=819,freq=2.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.09697737 = fieldWeight in 819, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=819)
  0.16666667 = coord(2/12)
    Abstract
    Purpose - An issue that tends to be ignored in information retrieval is the issue of updating inverted files. This is largely because inverted files were devised to provide fast query service, and much work has been done with the emphasis strongly on queries. This paper aims to study the effect of using parallel methods for the update of inverted files in order to reduce costs, by looking at two types of partitioning for inverted files: document identifier and term identifier. Design/methodology/approach - Raw update service and update with query service are studied with these partitioning schemes using an incremental update strategy. The paper uses standard measures used in parallel computing such as speedup to examine the computing results and also the costs of reorganising indexes while servicing transactions. Findings - Empirical results show that for both transaction processing and index reorganisation the document identifier method is superior. However, there is evidence that the term identifier partitioning method could be useful in a concurrent transaction processing context. Practical implications - There is an increasing need to service updates, which is now becoming a requirement of inverted files (for dynamic collections such as the web), demonstrating that a shift in requirements of inverted file maintenance is needed from the past. Originality/value - The paper is of value to database administrators who manage large-scale and dynamic text collections, and who need to use parallel computing to implement their text retrieval services.
  9. Robertson, S.E.: ¬The parametric description of retrieval tests : Part I: The basic parameters (1969) 0.00 
    0.0031015433 = product of:
  0.03721852 = sum of:
    0.03721852 = weight(_text_:system in 4155) [ClassicSimilarity], result of:
      0.03721852 = score(doc=4155,freq=4.0), product of:
        0.10804188 = queryWeight, product of:
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.03430388 = queryNorm
        0.34448233 = fieldWeight in 4155, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4155)
  0.083333336 = coord(1/12)
    Abstract
    Some parameters and techniques in use for describing the results of test on IR system are analysed. Several considerations outside the scope of the usual 2X2 table are relevant to the choice of parameters. In particular, a variable which produces a 'performance curve' of a system corresponds to an extension of the 2x2 table. Also, the statistical relationships between parameters are all-important. It is considered that precision is not such a useful measure of performance (in conjunction with recall)as fallout. A more powerful alternative to Cleverdon's 'invitable inverse relationship between recall and precision'is proposed and justified, namely that the recall-fallout graph is convex.
  10. Robertson, S.E.: On term selection for query expansion (1990) 0.00 
    0.0025064256 = product of:
  0.030077105 = sum of:
    0.030077105 = weight(_text_:system in 2650) [ClassicSimilarity], result of:
      0.030077105 = score(doc=2650,freq=2.0), product of:
        0.10804188 = queryWeight, product of:
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.03430388 = queryNorm
        0.27838376 = fieldWeight in 2650, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.1495528 = idf(docFreq=5152, maxDocs=44218)
          0.0625 = fieldNorm(doc=2650)
  0.083333336 = coord(1/12)
    Abstract
    In the framework of a relevance feedback system, term values or term weights may be used to (a) select new terms for inclusion in a query, and/or (b) weight the terms for retrieval purposes once selected. It has sometimes been assumed that the same weighting formula should be used for both purposes. This paper sketches a quantitative argument which suggests that the two purposes require different weighting formulae
  11. Robertson, S.E.: ¬The methodology of information retrieval experiment (1981) 0.00 
    0.0022023825 = product of:
  0.02642859 = sum of:
    0.02642859 = weight(_text_:information in 3146) [ClassicSimilarity], result of:
      0.02642859 = score(doc=3146,freq=4.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.43886948 = fieldWeight in 3146, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.125 = fieldNorm(doc=3146)
  0.083333336 = coord(1/12)
    Source
    Information retrieval experiment. Ed.: K. Sparck Jones
  12. Robertson, S.E.: Some recent theories and models in information retrieval (1980) 0.00 
    0.0020230177 = product of:
  0.024276212 = sum of:
    0.024276212 = weight(_text_:information in 1326) [ClassicSimilarity], result of:
      0.024276212 = score(doc=1326,freq=6.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.40312737 = fieldWeight in 1326, 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=1326)
  0.083333336 = coord(1/12)
    Source
    Theory and application of information research. Proc. of the 2nd Int. Research Forum on Information Science, 3.-6.8.1977, Copenhagen. Ed.: O. Harbo u. L. Kajberg
  13. Sparck Jones, K.; Walker, S.; Robertson, S.E.: ¬A probabilistic model of information retrieval : development and comparative experiments - part 1 (2000) 0.00 
    0.001651787 = product of:
  0.019821443 = sum of:
    0.019821443 = weight(_text_:information in 4181) [ClassicSimilarity], result of:
      0.019821443 = score(doc=4181,freq=4.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.3291521 = fieldWeight in 4181, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=4181)
  0.083333336 = coord(1/12)
    Source
    Information processing and management. 36(2000) no.6, S.779-808
  14. Sparck Jones, K.; Walker, S.; Robertson, S.E.: ¬A probabilistic model of information retrieval : development and comparative experiments - part 2 (2000) 0.00 
    0.001651787 = product of:
  0.019821443 = sum of:
    0.019821443 = weight(_text_:information in 4286) [ClassicSimilarity], result of:
      0.019821443 = score(doc=4286,freq=4.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.3291521 = fieldWeight in 4286, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=4286)
  0.083333336 = coord(1/12)
    Source
    Information processing and management. 36(2000) no.6, S.809-840
  15. Robertson, S.E.; Hancock-Beaulieu, M.M.: On the evaluation of IR systems (1992) 0.00 
    0.0015573198 = product of:
  0.018687837 = sum of:
    0.018687837 = weight(_text_:information in 2619) [ClassicSimilarity], result of:
      0.018687837 = score(doc=2619,freq=2.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.3103276 = fieldWeight in 2619, 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=2619)
  0.083333336 = coord(1/12)
    Source
    Information processing and management. 28(1992) no.4, S.457-466
  16. Robertson, S.E.: ¬The probabilistic character of relevance (1977) 0.00 
    0.0015573198 = product of:
  0.018687837 = sum of:
    0.018687837 = weight(_text_:information in 7399) [ClassicSimilarity], result of:
      0.018687837 = score(doc=7399,freq=2.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.3103276 = fieldWeight in 7399, 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=7399)
  0.083333336 = coord(1/12)
    Source
    Information processing and management. 13(1977), S.247-251
  17. Robertson, S.E.; Beaulieu, M.: Research and evaluation in information retrieval (1997) 0.00 
    0.0015573198 = product of:
  0.018687837 = sum of:
    0.018687837 = weight(_text_:information in 7445) [ClassicSimilarity], result of:
      0.018687837 = score(doc=7445,freq=8.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.3103276 = fieldWeight in 7445, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=7445)
  0.083333336 = coord(1/12)
    Abstract
    Offered as a discussion document drawing on the experiences of the Okapi team in developing information retrieval systems. Raises some of the issues currently exercising the information retrieval community in the context of experimentation and evaluation
    Footnote
    Contribution to a thematic issue on Okapi and information retrieval research
  18. MacFarlane, A.; Robertson, S.E.; McCann, J.A.: Parallel computing for passage retrieval (2004) 0.00 
    0.0015492341 = product of:
  0.01859081 = sum of:
    0.01859081 = product of:
      0.03718162 = sum of:
        0.03718162 = weight(_text_:22 in 5108) [ClassicSimilarity], result of:
          0.03718162 = score(doc=5108,freq=2.0), product of:
            0.120126344 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03430388 = queryNorm
            0.30952093 = fieldWeight in 5108, 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=5108)
      0.5 = coord(1/2)
  0.083333336 = coord(1/12)
    Date
    20. 1.2007 18:30:22
  19. Robertson, S.E.; Sparck Jones, K.: Relevance weighting of search terms (1976) 0.00 
    0.0013486785 = product of:
  0.016184142 = sum of:
    0.016184142 = weight(_text_:information in 71) [ClassicSimilarity], result of:
      0.016184142 = score(doc=71,freq=6.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.2687516 = fieldWeight in 71, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=71)
  0.083333336 = coord(1/12)
    Abstract
    Examines statistical techniques for exploiting relevance information to weight search terms. These techniques are presented as a natural extension of weighting methods using information about the distribution of index terms in documents in general. A series of relevance weighting functions is derived and is justified by theoretical considerations. In particular, it is shown that specific weighted search methods are implied by a general probabilistic theory of retrieval. Different applications of relevance weighting are illustrated by experimental results for test collections
    Source
    Journal of the American Society for Information Science. 27(1976), S.129-146
  20. MacFarlane, A.; Robertson, S.E.; McCann, J.A.: Parallel computing in information retrieval : an updated review (1997) 0.00 
    0.0013486785 = product of:
  0.016184142 = sum of:
    0.016184142 = weight(_text_:information in 7450) [ClassicSimilarity], result of:
      0.016184142 = score(doc=7450,freq=6.0), product of:
        0.060219705 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.03430388 = queryNorm
        0.2687516 = fieldWeight in 7450, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=7450)
  0.083333336 = coord(1/12)
    Abstract
    Reviews the progress of parallel computing in information retrieval. Stresses the importance of the motivation is using parallel computing for text retrieval. Analyzes parallel IR systems using a classification defined by Rasmussen and describes some parallel IR systems. Gives a description of the retrieval models used in parallel information processing and notes areas where research is needed

Authors

Years

Types

  • a 26
  • p 3
  • el 1
  • r 1
  • More… Less…

Themes