Document (#1070)

Author
Larson, R.R.
Title
Classification clustering, probabilistic information retrieval, and the online catalog
Source
Library quarterly. 61(1991), S.133-173
Year
1991
Abstract
Research into online catalog use and users has found some pervasive problems with subject searching in these systems. Subject searches too often fail to retrieve anything, and those that do succeed often retrieve "too much" material. This article examnies these problems and how they might be remedied. The theoretical principles for the design of effective information retrieval systems are discussed, and an experimental online catalog system based on these principles is described. The system, CHESHIRE, uses a method called "classification clustering", combined with probabilistic retrieval techniques, to provide natural language searching (which helps to reduce search failure) and to provide effective control of "information overload" in subject searching
Footnote
Enthält ausführliches Literaturverzeichnis
Theme
OPAC
Object
CHESHIRE

Similar documents (author)

  1. Larson, R.R.: Between Scylla and Charybdis : searching in the online catalog (1991) 5.21
    5.2088575 = sum of:
      5.2088575 = weight(author_txt:larson in 461) [ClassicSimilarity], result of:
        5.2088575 = fieldWeight in 461, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.334172 = idf(docFreq=28, maxDocs=44421)
          0.625 = fieldNorm(doc=461)
    
  2. Larson, R.R.: Evaluation of advanced retrieval techniques in an experimental online catalog (1992) 5.21
    5.2088575 = sum of:
      5.2088575 = weight(author_txt:larson in 480) [ClassicSimilarity], result of:
        5.2088575 = fieldWeight in 480, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.334172 = idf(docFreq=28, maxDocs=44421)
          0.625 = fieldNorm(doc=480)
    
  3. Larson, R.R.: Experiments in automatic Library of Congress Classification (1992) 5.21
    5.2088575 = sum of:
      5.2088575 = weight(author_txt:larson in 1053) [ClassicSimilarity], result of:
        5.2088575 = fieldWeight in 1053, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.334172 = idf(docFreq=28, maxDocs=44421)
          0.625 = fieldNorm(doc=1053)
    
  4. Larson, R.R.: ¬The decline of subject searching : long-term trends and patterns of index use in an online catalog (1991) 5.21
    5.2088575 = sum of:
      5.2088575 = weight(author_txt:larson in 1103) [ClassicSimilarity], result of:
        5.2088575 = fieldWeight in 1103, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.334172 = idf(docFreq=28, maxDocs=44421)
          0.625 = fieldNorm(doc=1103)
    
  5. Larson, R.R.: Users look at online catalogs : Pt.2: interacting with online catalogs. Final report for the Council on Library Resources (1983) 5.21
    5.2088575 = sum of:
      5.2088575 = weight(author_txt:larson in 2423) [ClassicSimilarity], result of:
        5.2088575 = fieldWeight in 2423, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.334172 = idf(docFreq=28, maxDocs=44421)
          0.625 = fieldNorm(doc=2423)
    

Similar documents (content)

  1. Larson, R.R.: Evaluation of advanced retrieval techniques in an experimental online catalog (1992) 0.33
    0.3318537 = sum of:
      0.3318537 = product of:
        0.92181575 = sum of:
          0.020927481 = weight(abstract_txt:systems in 480) [ClassicSimilarity], result of:
            0.020927481 = score(doc=480,freq=1.0), product of:
              0.078527704 = queryWeight, product of:
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.02302072 = queryNorm
              0.26649806 = fieldWeight in 480, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.078125 = fieldNorm(doc=480)
          0.011193082 = weight(abstract_txt:information in 480) [ClassicSimilarity], result of:
            0.011193082 = score(doc=480,freq=1.0), product of:
              0.05923001 = queryWeight, product of:
                1.0636655 = boost
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.02302072 = queryNorm
              0.18897653 = fieldWeight in 480, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.078125 = fieldNorm(doc=480)
          0.041943714 = weight(abstract_txt:problems in 480) [ClassicSimilarity], result of:
            0.041943714 = score(doc=480,freq=1.0), product of:
              0.12483112 = queryWeight, product of:
                1.260811 = boost
                4.300847 = idf(docFreq=1636, maxDocs=44421)
                0.02302072 = queryNorm
              0.33600366 = fieldWeight in 480, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.300847 = idf(docFreq=1636, maxDocs=44421)
                0.078125 = fieldNorm(doc=480)
          0.036063686 = weight(abstract_txt:these in 480) [ClassicSimilarity], result of:
            0.036063686 = score(doc=480,freq=2.0), product of:
              0.1025523 = queryWeight, product of:
                1.3996094 = boost
                3.1828754 = idf(docFreq=5006, maxDocs=44421)
                0.02302072 = queryNorm
              0.35166138 = fieldWeight in 480, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1828754 = idf(docFreq=5006, maxDocs=44421)
                0.078125 = fieldNorm(doc=480)
          0.24475476 = weight(abstract_txt:cheshire in 480) [ClassicSimilarity], result of:
            0.24475476 = score(doc=480,freq=1.0), product of:
              0.32113603 = queryWeight, product of:
                1.4299408 = boost
                9.755557 = idf(docFreq=6, maxDocs=44421)
                0.02302072 = queryNorm
              0.7621529 = fieldWeight in 480, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.755557 = idf(docFreq=6, maxDocs=44421)
                0.078125 = fieldNorm(doc=480)
          0.05755506 = weight(abstract_txt:retrieval in 480) [ClassicSimilarity], result of:
            0.05755506 = score(doc=480,freq=3.0), product of:
              0.122346245 = queryWeight, product of:
                1.5287255 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.02302072 = queryNorm
              0.4704277 = fieldWeight in 480, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.078125 = fieldNorm(doc=480)
          0.102970906 = weight(abstract_txt:online in 480) [ClassicSimilarity], result of:
            0.102970906 = score(doc=480,freq=7.0), product of:
              0.13594161 = queryWeight, product of:
                1.611426 = boost
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.02302072 = queryNorm
              0.75746423 = fieldWeight in 480, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.078125 = fieldNorm(doc=480)
          0.09454489 = weight(abstract_txt:subject in 480) [ClassicSimilarity], result of:
            0.09454489 = score(doc=480,freq=4.0), product of:
              0.15475596 = queryWeight, product of:
                1.7193246 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.02302072 = queryNorm
              0.6109289 = fieldWeight in 480, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.078125 = fieldNorm(doc=480)
          0.3118622 = weight(abstract_txt:catalog in 480) [ClassicSimilarity], result of:
            0.3118622 = score(doc=480,freq=6.0), product of:
              0.29957125 = queryWeight, product of:
                2.392127 = boost
                5.4399757 = idf(docFreq=523, maxDocs=44421)
                0.02302072 = queryNorm
              1.0410285 = fieldWeight in 480, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                5.4399757 = idf(docFreq=523, maxDocs=44421)
                0.078125 = fieldNorm(doc=480)
        0.36 = coord(9/25)
    
  2. Markey, K.: Searching and browsing the Dewey Decimal Classification in an online catalog (1987) 0.29
    0.2872019 = sum of:
      0.2872019 = product of:
        0.71800476 = sum of:
          0.016741984 = weight(abstract_txt:systems in 509) [ClassicSimilarity], result of:
            0.016741984 = score(doc=509,freq=1.0), product of:
              0.078527704 = queryWeight, product of:
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.02302072 = queryNorm
              0.21319844 = fieldWeight in 509, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
          0.1023429 = weight(abstract_txt:failure in 509) [ClassicSimilarity], result of:
            0.1023429 = score(doc=509,freq=2.0), product of:
              0.1653878 = queryWeight, product of:
                1.0261841 = boost
                7.000987 = idf(docFreq=109, maxDocs=44421)
                0.02302072 = queryNorm
              0.61880565 = fieldWeight in 509, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.000987 = idf(docFreq=109, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
          0.008954465 = weight(abstract_txt:information in 509) [ClassicSimilarity], result of:
            0.008954465 = score(doc=509,freq=1.0), product of:
              0.05923001 = queryWeight, product of:
                1.0636655 = boost
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.02302072 = queryNorm
              0.15118122 = fieldWeight in 509, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
          0.046481393 = weight(abstract_txt:classification in 509) [ClassicSimilarity], result of:
            0.046481393 = score(doc=509,freq=3.0), product of:
              0.10755501 = queryWeight, product of:
                1.170318 = boost
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.02302072 = queryNorm
              0.43216392 = fieldWeight in 509, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9921594 = idf(docFreq=2228, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
          0.0204007 = weight(abstract_txt:these in 509) [ClassicSimilarity], result of:
            0.0204007 = score(doc=509,freq=1.0), product of:
              0.1025523 = queryWeight, product of:
                1.3996094 = boost
                3.1828754 = idf(docFreq=5006, maxDocs=44421)
                0.02302072 = queryNorm
              0.19892971 = fieldWeight in 509, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1828754 = idf(docFreq=5006, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
          0.03759481 = weight(abstract_txt:retrieval in 509) [ClassicSimilarity], result of:
            0.03759481 = score(doc=509,freq=2.0), product of:
              0.122346245 = queryWeight, product of:
                1.5287255 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.02302072 = queryNorm
              0.3072821 = fieldWeight in 509, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
          0.10785646 = weight(abstract_txt:online in 509) [ClassicSimilarity], result of:
            0.10785646 = score(doc=509,freq=12.0), product of:
              0.13594161 = queryWeight, product of:
                1.611426 = boost
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.02302072 = queryNorm
              0.79340285 = fieldWeight in 509, product of:
                3.4641016 = tf(freq=12.0), with freq of:
                  12.0 = termFreq=12.0
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
          0.100056894 = weight(abstract_txt:subject in 509) [ClassicSimilarity], result of:
            0.100056894 = score(doc=509,freq=7.0), product of:
              0.15475596 = queryWeight, product of:
                1.7193246 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.02302072 = queryNorm
              0.6465463 = fieldWeight in 509, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
          0.0498232 = weight(abstract_txt:searching in 509) [ClassicSimilarity], result of:
            0.0498232 = score(doc=509,freq=1.0), product of:
              0.18598151 = queryWeight, product of:
                1.8848164 = boost
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.02302072 = queryNorm
              0.26789328 = fieldWeight in 509, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
          0.22775196 = weight(abstract_txt:catalog in 509) [ClassicSimilarity], result of:
            0.22775196 = score(doc=509,freq=5.0), product of:
              0.29957125 = queryWeight, product of:
                2.392127 = boost
                5.4399757 = idf(docFreq=523, maxDocs=44421)
                0.02302072 = queryNorm
              0.76025975 = fieldWeight in 509, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.4399757 = idf(docFreq=523, maxDocs=44421)
                0.0625 = fieldNorm(doc=509)
        0.4 = coord(10/25)
    
  3. Larson, R.R.; McDonough, J.; O'Leary, P.; Kuntz, L.: Cheshire II : designing a next-generation online catalog (1996) 0.26
    0.264069 = sum of:
      0.264069 = product of:
        0.94310355 = sum of:
          0.02216117 = weight(abstract_txt:information in 4452) [ClassicSimilarity], result of:
            0.02216117 = score(doc=4452,freq=2.0), product of:
              0.05923001 = queryWeight, product of:
                1.0636655 = boost
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.02302072 = queryNorm
              0.37415442 = fieldWeight in 4452, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.109375 = fieldNorm(doc=4452)
          0.047735557 = weight(abstract_txt:provide in 4452) [ClassicSimilarity], result of:
            0.047735557 = score(doc=4452,freq=1.0), product of:
              0.10873122 = queryWeight, product of:
                1.1766998 = boost
                4.013929 = idf(docFreq=2180, maxDocs=44421)
                0.02302072 = queryNorm
              0.43902346 = fieldWeight in 4452, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.013929 = idf(docFreq=2180, maxDocs=44421)
                0.109375 = fieldNorm(doc=4452)
          0.34265667 = weight(abstract_txt:cheshire in 4452) [ClassicSimilarity], result of:
            0.34265667 = score(doc=4452,freq=1.0), product of:
              0.32113603 = queryWeight, product of:
                1.4299408 = boost
                9.755557 = idf(docFreq=6, maxDocs=44421)
                0.02302072 = queryNorm
              1.0670141 = fieldWeight in 4452, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.755557 = idf(docFreq=6, maxDocs=44421)
                0.109375 = fieldNorm(doc=4452)
          0.046521205 = weight(abstract_txt:retrieval in 4452) [ClassicSimilarity], result of:
            0.046521205 = score(doc=4452,freq=1.0), product of:
              0.122346245 = queryWeight, product of:
                1.5287255 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.02302072 = queryNorm
              0.3802422 = fieldWeight in 4452, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.109375 = fieldNorm(doc=4452)
          0.07705637 = weight(abstract_txt:online in 4452) [ClassicSimilarity], result of:
            0.07705637 = score(doc=4452,freq=2.0), product of:
              0.13594161 = queryWeight, product of:
                1.611426 = boost
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.02302072 = queryNorm
              0.56683433 = fieldWeight in 4452, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.109375 = fieldNorm(doc=4452)
          0.22872847 = weight(abstract_txt:probabilistic in 4452) [ClassicSimilarity], result of:
            0.22872847 = score(doc=4452,freq=1.0), product of:
              0.3090341 = queryWeight, product of:
                1.983772 = boost
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.02302072 = queryNorm
              0.7401399 = fieldWeight in 4452, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.109375 = fieldNorm(doc=4452)
          0.1782441 = weight(abstract_txt:catalog in 4452) [ClassicSimilarity], result of:
            0.1782441 = score(doc=4452,freq=1.0), product of:
              0.29957125 = queryWeight, product of:
                2.392127 = boost
                5.4399757 = idf(docFreq=523, maxDocs=44421)
                0.02302072 = queryNorm
              0.59499735 = fieldWeight in 4452, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4399757 = idf(docFreq=523, maxDocs=44421)
                0.109375 = fieldNorm(doc=4452)
        0.28 = coord(7/25)
    
  4. Larson, R.R.: ¬The decline of subject searching : long-term trends and patterns of index use in an online catalog (1991) 0.26
    0.26319194 = sum of:
      0.26319194 = product of:
        0.65797985 = sum of:
          0.016741984 = weight(abstract_txt:systems in 1103) [ClassicSimilarity], result of:
            0.016741984 = score(doc=1103,freq=1.0), product of:
              0.078527704 = queryWeight, product of:
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.02302072 = queryNorm
              0.21319844 = fieldWeight in 1103, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
          0.07153615 = weight(abstract_txt:overload in 1103) [ClassicSimilarity], result of:
            0.07153615 = score(doc=1103,freq=1.0), product of:
              0.16411893 = queryWeight, product of:
                1.02224 = boost
                6.9740796 = idf(docFreq=112, maxDocs=44421)
                0.02302072 = queryNorm
              0.43587998 = fieldWeight in 1103, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9740796 = idf(docFreq=112, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
          0.07236736 = weight(abstract_txt:failure in 1103) [ClassicSimilarity], result of:
            0.07236736 = score(doc=1103,freq=1.0), product of:
              0.1653878 = queryWeight, product of:
                1.0261841 = boost
                7.000987 = idf(docFreq=109, maxDocs=44421)
                0.02302072 = queryNorm
              0.4375617 = fieldWeight in 1103, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.000987 = idf(docFreq=109, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
          0.008954465 = weight(abstract_txt:information in 1103) [ClassicSimilarity], result of:
            0.008954465 = score(doc=1103,freq=1.0), product of:
              0.05923001 = queryWeight, product of:
                1.0636655 = boost
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.02302072 = queryNorm
              0.15118122 = fieldWeight in 1103, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
          0.047453895 = weight(abstract_txt:problems in 1103) [ClassicSimilarity], result of:
            0.047453895 = score(doc=1103,freq=2.0), product of:
              0.12483112 = queryWeight, product of:
                1.260811 = boost
                4.300847 = idf(docFreq=1636, maxDocs=44421)
                0.02302072 = queryNorm
              0.38014475 = fieldWeight in 1103, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.300847 = idf(docFreq=1636, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
          0.028850947 = weight(abstract_txt:these in 1103) [ClassicSimilarity], result of:
            0.028850947 = score(doc=1103,freq=2.0), product of:
              0.1025523 = queryWeight, product of:
                1.3996094 = boost
                3.1828754 = idf(docFreq=5006, maxDocs=44421)
                0.02302072 = queryNorm
              0.2813291 = fieldWeight in 1103, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1828754 = idf(docFreq=5006, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
          0.062270958 = weight(abstract_txt:online in 1103) [ClassicSimilarity], result of:
            0.062270958 = score(doc=1103,freq=4.0), product of:
              0.13594161 = queryWeight, product of:
                1.611426 = boost
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.02302072 = queryNorm
              0.45807135 = fieldWeight in 1103, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
          0.07563591 = weight(abstract_txt:subject in 1103) [ClassicSimilarity], result of:
            0.07563591 = score(doc=1103,freq=4.0), product of:
              0.15475596 = queryWeight, product of:
                1.7193246 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.02302072 = queryNorm
              0.4887431 = fieldWeight in 1103, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
          0.07046064 = weight(abstract_txt:searching in 1103) [ClassicSimilarity], result of:
            0.07046064 = score(doc=1103,freq=2.0), product of:
              0.18598151 = queryWeight, product of:
                1.8848164 = boost
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.02302072 = queryNorm
              0.3788583 = fieldWeight in 1103, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
          0.20370755 = weight(abstract_txt:catalog in 1103) [ClassicSimilarity], result of:
            0.20370755 = score(doc=1103,freq=4.0), product of:
              0.29957125 = queryWeight, product of:
                2.392127 = boost
                5.4399757 = idf(docFreq=523, maxDocs=44421)
                0.02302072 = queryNorm
              0.67999697 = fieldWeight in 1103, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.4399757 = idf(docFreq=523, maxDocs=44421)
                0.0625 = fieldNorm(doc=1103)
        0.4 = coord(10/25)
    
  5. Zhang, J.; Mostafa, J.; Tripathy, H.: Information retrieval by semantic analysis and visualization of the concept space of D-Lib® magazine (2002) 0.25
    0.25140923 = sum of:
      0.25140923 = product of:
        0.44894505 = sum of:
          0.0144989835 = weight(abstract_txt:systems in 2211) [ClassicSimilarity], result of:
            0.0144989835 = score(doc=2211,freq=3.0), product of:
              0.078527704 = queryWeight, product of:
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.02302072 = queryNorm
              0.18463527 = fieldWeight in 2211, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.035768077 = weight(abstract_txt:overload in 2211) [ClassicSimilarity], result of:
            0.035768077 = score(doc=2211,freq=1.0), product of:
              0.16411893 = queryWeight, product of:
                1.02224 = boost
                6.9740796 = idf(docFreq=112, maxDocs=44421)
                0.02302072 = queryNorm
              0.21793999 = fieldWeight in 2211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9740796 = idf(docFreq=112, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.018460102 = weight(abstract_txt:information in 2211) [ClassicSimilarity], result of:
            0.018460102 = score(doc=2211,freq=17.0), product of:
              0.05923001 = queryWeight, product of:
                1.0636655 = boost
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.02302072 = queryNorm
              0.31166807 = fieldWeight in 2211, product of:
                4.1231055 = tf(freq=17.0), with freq of:
                  17.0 = termFreq=17.0
                2.4188995 = idf(docFreq=10748, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.023726948 = weight(abstract_txt:problems in 2211) [ClassicSimilarity], result of:
            0.023726948 = score(doc=2211,freq=2.0), product of:
              0.12483112 = queryWeight, product of:
                1.260811 = boost
                4.300847 = idf(docFreq=1636, maxDocs=44421)
                0.02302072 = queryNorm
              0.19007237 = fieldWeight in 2211, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.300847 = idf(docFreq=1636, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.022916738 = weight(abstract_txt:often in 2211) [ClassicSimilarity], result of:
            0.022916738 = score(doc=2211,freq=1.0), product of:
              0.15367627 = queryWeight, product of:
                1.398917 = boost
                4.7719507 = idf(docFreq=1021, maxDocs=44421)
                0.02302072 = queryNorm
              0.14912346 = fieldWeight in 2211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7719507 = idf(docFreq=1021, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.014425473 = weight(abstract_txt:these in 2211) [ClassicSimilarity], result of:
            0.014425473 = score(doc=2211,freq=2.0), product of:
              0.1025523 = queryWeight, product of:
                1.3996094 = boost
                3.1828754 = idf(docFreq=5006, maxDocs=44421)
                0.02302072 = queryNorm
              0.14066455 = fieldWeight in 2211, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1828754 = idf(docFreq=5006, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.023876578 = weight(abstract_txt:effective in 2211) [ClassicSimilarity], result of:
            0.023876578 = score(doc=2211,freq=1.0), product of:
              0.1579379 = queryWeight, product of:
                1.4181812 = boost
                4.837664 = idf(docFreq=956, maxDocs=44421)
                0.02302072 = queryNorm
              0.151177 = fieldWeight in 2211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.837664 = idf(docFreq=956, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.03255806 = weight(abstract_txt:retrieval in 2211) [ClassicSimilarity], result of:
            0.03255806 = score(doc=2211,freq=6.0), product of:
              0.122346245 = queryWeight, product of:
                1.5287255 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.02302072 = queryNorm
              0.26611412 = fieldWeight in 2211, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.022016108 = weight(abstract_txt:online in 2211) [ClassicSimilarity], result of:
            0.022016108 = score(doc=2211,freq=2.0), product of:
              0.13594161 = queryWeight, product of:
                1.611426 = boost
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.02302072 = queryNorm
              0.16195267 = fieldWeight in 2211, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6645708 = idf(docFreq=3092, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.03275131 = weight(abstract_txt:subject in 2211) [ClassicSimilarity], result of:
            0.03275131 = score(doc=2211,freq=3.0), product of:
              0.15475596 = queryWeight, product of:
                1.7193246 = boost
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.02302072 = queryNorm
              0.21163197 = fieldWeight in 2211, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9099448 = idf(docFreq=2419, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.045884054 = weight(abstract_txt:retrieve in 2211) [ClassicSimilarity], result of:
            0.045884054 = score(doc=2211,freq=1.0), product of:
              0.2441253 = queryWeight, product of:
                1.7631731 = boost
                6.014492 = idf(docFreq=294, maxDocs=44421)
                0.02302072 = queryNorm
              0.18795288 = fieldWeight in 2211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.014492 = idf(docFreq=294, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.07180002 = weight(abstract_txt:clustering in 2211) [ClassicSimilarity], result of:
            0.07180002 = score(doc=2211,freq=2.0), product of:
              0.26116282 = queryWeight, product of:
                1.8236614 = boost
                6.2208285 = idf(docFreq=239, maxDocs=44421)
                0.02302072 = queryNorm
              0.27492437 = fieldWeight in 2211, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.2208285 = idf(docFreq=239, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.0249116 = weight(abstract_txt:searching in 2211) [ClassicSimilarity], result of:
            0.0249116 = score(doc=2211,freq=1.0), product of:
              0.18598151 = queryWeight, product of:
                1.8848164 = boost
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.02302072 = queryNorm
              0.13394664 = fieldWeight in 2211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
          0.065350994 = weight(abstract_txt:probabilistic in 2211) [ClassicSimilarity], result of:
            0.065350994 = score(doc=2211,freq=1.0), product of:
              0.3090341 = queryWeight, product of:
                1.983772 = boost
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.02302072 = queryNorm
              0.21146855 = fieldWeight in 2211, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.7669935 = idf(docFreq=138, maxDocs=44421)
                0.03125 = fieldNorm(doc=2211)
        0.56 = coord(14/25)