Document (#20616)

Author
DeHart, F.
Scott, L.
Title
Multifile searching on classification codes in mathematics : the problem of level of specifity
Source
Technical services quarterly. 11(1993) no.2, S.37-53
Year
1993
Abstract
The problem of level of specifity in multifile searching possible from an OPAC is highlighted. Emphasis is on classification codes as access points in searches on mathematical topics. An exploratory study was conducted which serves as a framework for tracing indications of the problem from indexing through retrieval. The study postulates that users may identify LC numbers on desired mathematical topics through an OPAC search. They might then proceed to access appropriate Mathematics Subject Classification (MSC) codes in the Mathematical Reviews (MR) and Current Mathematical Publication (CMP) subfiles of the Dialog MathSci database to identify additional material. Discussion follows on how the probelm of level of specifity in multifile OPAC searching might be alleviated
Field
Mathematik

Similar documents (author)

  1. DeHart, F.E.; Glazier, J.: Computer searching on PRECIS : an exploration of measuring comparative retrieval effectiveness (1984) 2.05
    2.047299 = sum of:
      2.047299 = product of:
        4.094598 = sum of:
          4.094598 = weight(author_txt:dehart in 828) [ClassicSimilarity], result of:
            4.094598 = score(doc=828,freq=1.0), product of:
              0.8267633 = queryWeight, product of:
                1.2122998 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.06885113 = queryNorm
              4.952564 = fieldWeight in 828, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.5 = fieldNorm(doc=828)
        0.5 = coord(1/2)
    
  2. Hogweg-DeHart, H.P.: Characteristics of social science information (1983-84) 2.05
    2.047299 = sum of:
      2.047299 = product of:
        4.094598 = sum of:
          4.094598 = weight(author_txt:dehart in 2579) [ClassicSimilarity], result of:
            4.094598 = score(doc=2579,freq=1.0), product of:
              0.8267633 = queryWeight, product of:
                1.2122998 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.06885113 = queryNorm
              4.952564 = fieldWeight in 2579, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.5 = fieldNorm(doc=2579)
        0.5 = coord(1/2)
    
  3. DeHart, F.E.; Matthews, K.: French fiction : LCSH applications (1988) 2.05
    2.047299 = sum of:
      2.047299 = product of:
        4.094598 = sum of:
          4.094598 = weight(author_txt:dehart in 3248) [ClassicSimilarity], result of:
            4.094598 = score(doc=3248,freq=1.0), product of:
              0.8267633 = queryWeight, product of:
                1.2122998 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.06885113 = queryNorm
              4.952564 = fieldWeight in 3248, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.5 = fieldNorm(doc=3248)
        0.5 = coord(1/2)
    
  4. DeHart, F.E.; Matthews, K.: Subject enhancements and OPACs : planning ahead (1990) 2.05
    2.047299 = sum of:
      2.047299 = product of:
        4.094598 = sum of:
          4.094598 = weight(author_txt:dehart in 4654) [ClassicSimilarity], result of:
            4.094598 = score(doc=4654,freq=1.0), product of:
              0.8267633 = queryWeight, product of:
                1.2122998 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.06885113 = queryNorm
              4.952564 = fieldWeight in 4654, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.5 = fieldNorm(doc=4654)
        0.5 = coord(1/2)
    
  5. Scott, D.S.: Subject classification and natural-language processing for retrieval in large databases (1989) 1.44
    1.4363528 = sum of:
      1.4363528 = product of:
        2.8727057 = sum of:
          2.8727057 = weight(author_txt:scott in 967) [ClassicSimilarity], result of:
            2.8727057 = score(doc=967,freq=1.0), product of:
              0.56254995 = queryWeight, product of:
                8.1705265 = idf(docFreq=33, maxDocs=44218)
                0.06885113 = queryNorm
              5.106579 = fieldWeight in 967, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.1705265 = idf(docFreq=33, maxDocs=44218)
                0.625 = fieldNorm(doc=967)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Brown, J.M.: ¬The multifile OPAC environment : a manageable approach to developing an instruction program (1993) 0.19
    0.18585882 = sum of:
      0.18585882 = product of:
        1.1616176 = sum of:
          0.030909264 = weight(abstract_txt:access in 7917) [ClassicSimilarity], result of:
            0.030909264 = score(doc=7917,freq=3.0), product of:
              0.052137174 = queryWeight, product of:
                1.0663509 = boost
                3.6509786 = idf(docFreq=3120, maxDocs=44218)
                0.013391771 = queryNorm
              0.592845 = fieldWeight in 7917, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6509786 = idf(docFreq=3120, maxDocs=44218)
                0.09375 = fieldNorm(doc=7917)
          0.04326741 = weight(abstract_txt:searching in 7917) [ClassicSimilarity], result of:
            0.04326741 = score(doc=7917,freq=1.0), product of:
              0.10771259 = queryWeight, product of:
                1.8771772 = boost
                4.284727 = idf(docFreq=1655, maxDocs=44218)
                0.013391771 = queryNorm
              0.40169317 = fieldWeight in 7917, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.284727 = idf(docFreq=1655, maxDocs=44218)
                0.09375 = fieldNorm(doc=7917)
          0.16160879 = weight(abstract_txt:opac in 7917) [ClassicSimilarity], result of:
            0.16160879 = score(doc=7917,freq=3.0), product of:
              0.17978857 = queryWeight, product of:
                2.425231 = boost
                5.53568 = idf(docFreq=473, maxDocs=44218)
                0.013391771 = queryNorm
              0.8988824 = fieldWeight in 7917, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.53568 = idf(docFreq=473, maxDocs=44218)
                0.09375 = fieldNorm(doc=7917)
          0.92583215 = weight(abstract_txt:multifile in 7917) [ClassicSimilarity], result of:
            0.92583215 = score(doc=7917,freq=3.0), product of:
              0.57562584 = queryWeight, product of:
                4.3395247 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.013391771 = queryNorm
              1.6083922 = fieldWeight in 7917, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.09375 = fieldNorm(doc=7917)
        0.16 = coord(4/25)
    
  2. Fife, E.D.; Husch, L.: ¬The Mathematics Archives : making mathematics easy to find on the Web (1999) 0.11
    0.107412495 = sum of:
      0.107412495 = product of:
        0.53706247 = sum of:
          0.044946715 = weight(abstract_txt:desired in 1239) [ClassicSimilarity], result of:
            0.044946715 = score(doc=1239,freq=1.0), product of:
              0.100379474 = queryWeight, product of:
                1.0462462 = boost
                7.1642876 = idf(docFreq=92, maxDocs=44218)
                0.013391771 = queryNorm
              0.44776797 = fieldWeight in 1239, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.1642876 = idf(docFreq=92, maxDocs=44218)
                0.0625 = fieldNorm(doc=1239)
          0.04548853 = weight(abstract_txt:topics in 1239) [ClassicSimilarity], result of:
            0.04548853 = score(doc=1239,freq=2.0), product of:
              0.101184554 = queryWeight, product of:
                1.4855372 = boost
                5.086191 = idf(docFreq=742, maxDocs=44218)
                0.013391771 = queryNorm
              0.44956002 = fieldWeight in 1239, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.086191 = idf(docFreq=742, maxDocs=44218)
                0.0625 = fieldNorm(doc=1239)
          0.16290961 = weight(abstract_txt:mathematics in 1239) [ClassicSimilarity], result of:
            0.16290961 = score(doc=1239,freq=5.0), product of:
              0.17451419 = queryWeight, product of:
                1.9509305 = boost
                6.6796074 = idf(docFreq=150, maxDocs=44218)
                0.013391771 = queryNorm
              0.9335035 = fieldWeight in 1239, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.6796074 = idf(docFreq=150, maxDocs=44218)
                0.0625 = fieldNorm(doc=1239)
          0.033369195 = weight(abstract_txt:level in 1239) [ClassicSimilarity], result of:
            0.033369195 = score(doc=1239,freq=1.0), product of:
              0.11869995 = queryWeight, product of:
                1.9705948 = boost
                4.497956 = idf(docFreq=1337, maxDocs=44218)
                0.013391771 = queryNorm
              0.28112224 = fieldWeight in 1239, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.497956 = idf(docFreq=1337, maxDocs=44218)
                0.0625 = fieldNorm(doc=1239)
          0.25034842 = weight(abstract_txt:mathematical in 1239) [ClassicSimilarity], result of:
            0.25034842 = score(doc=1239,freq=4.0), product of:
              0.31541052 = queryWeight, product of:
                3.7091937 = boost
                6.3497796 = idf(docFreq=209, maxDocs=44218)
                0.013391771 = queryNorm
              0.79372245 = fieldWeight in 1239, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.3497796 = idf(docFreq=209, maxDocs=44218)
                0.0625 = fieldNorm(doc=1239)
        0.2 = coord(5/25)
    
  3. Xu, H.; Lancaster, F.W.: Redundancy and uniqueness of subject access points in online catalogs (1998) 0.09
    0.09489289 = sum of:
      0.09489289 = product of:
        0.47446445 = sum of:
          0.02575772 = weight(abstract_txt:access in 1788) [ClassicSimilarity], result of:
            0.02575772 = score(doc=1788,freq=3.0), product of:
              0.052137174 = queryWeight, product of:
                1.0663509 = boost
                3.6509786 = idf(docFreq=3120, maxDocs=44218)
                0.013391771 = queryNorm
              0.49403754 = fieldWeight in 1788, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6509786 = idf(docFreq=3120, maxDocs=44218)
                0.078125 = fieldNorm(doc=1788)
          0.06433557 = weight(abstract_txt:might in 1788) [ClassicSimilarity], result of:
            0.06433557 = score(doc=1788,freq=2.0), product of:
              0.10986863 = queryWeight, product of:
                1.5479726 = boost
                5.2999578 = idf(docFreq=599, maxDocs=44218)
                0.013391771 = queryNorm
              0.58556813 = fieldWeight in 1788, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.2999578 = idf(docFreq=599, maxDocs=44218)
                0.078125 = fieldNorm(doc=1788)
          0.041240253 = weight(abstract_txt:classification in 1788) [ClassicSimilarity], result of:
            0.041240253 = score(doc=1788,freq=2.0), product of:
              0.093501285 = queryWeight, product of:
                1.7489638 = boost
                3.9920752 = idf(docFreq=2218, maxDocs=44218)
                0.013391771 = queryNorm
              0.44106615 = fieldWeight in 1788, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9920752 = idf(docFreq=2218, maxDocs=44218)
                0.078125 = fieldNorm(doc=1788)
          0.050991133 = weight(abstract_txt:searching in 1788) [ClassicSimilarity], result of:
            0.050991133 = score(doc=1788,freq=2.0), product of:
              0.10771259 = queryWeight, product of:
                1.8771772 = boost
                4.284727 = idf(docFreq=1655, maxDocs=44218)
                0.013391771 = queryNorm
              0.47339994 = fieldWeight in 1788, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.284727 = idf(docFreq=1655, maxDocs=44218)
                0.078125 = fieldNorm(doc=1788)
          0.29213977 = weight(abstract_txt:specifity in 1788) [ClassicSimilarity], result of:
            0.29213977 = score(doc=1788,freq=1.0), product of:
              0.43451738 = queryWeight, product of:
                3.7702975 = boost
                8.6058445 = idf(docFreq=21, maxDocs=44218)
                0.013391771 = queryNorm
              0.6723316 = fieldWeight in 1788, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.6058445 = idf(docFreq=21, maxDocs=44218)
                0.078125 = fieldNorm(doc=1788)
        0.2 = coord(5/25)
    
  4. Tibbo, H.R.: ¬The epic struggle : subject retrieval from large bibliographic databases (1994) 0.09
    0.09297993 = sum of:
      0.09297993 = product of:
        0.3874164 = sum of:
          0.0098115215 = weight(abstract_txt:study in 2179) [ClassicSimilarity], result of:
            0.0098115215 = score(doc=2179,freq=1.0), product of:
              0.04585083 = queryWeight, product of:
                3.423806 = idf(docFreq=3916, maxDocs=44218)
                0.013391771 = queryNorm
              0.21398787 = fieldWeight in 2179, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.423806 = idf(docFreq=3916, maxDocs=44218)
                0.0625 = fieldNorm(doc=2179)
          0.015777083 = weight(abstract_txt:through in 2179) [ClassicSimilarity], result of:
            0.015777083 = score(doc=2179,freq=1.0), product of:
              0.06293237 = queryWeight, product of:
                1.1715571 = boost
                4.011184 = idf(docFreq=2176, maxDocs=44218)
                0.013391771 = queryNorm
              0.250699 = fieldWeight in 2179, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.011184 = idf(docFreq=2176, maxDocs=44218)
                0.0625 = fieldNorm(doc=2179)
          0.03254354 = weight(abstract_txt:problem in 2179) [ClassicSimilarity], result of:
            0.03254354 = score(doc=2179,freq=1.0), product of:
              0.11673378 = queryWeight, product of:
                1.9542059 = boost
                4.460548 = idf(docFreq=1388, maxDocs=44218)
                0.013391771 = queryNorm
              0.27878425 = fieldWeight in 2179, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.460548 = idf(docFreq=1388, maxDocs=44218)
                0.0625 = fieldNorm(doc=2179)
          0.033369195 = weight(abstract_txt:level in 2179) [ClassicSimilarity], result of:
            0.033369195 = score(doc=2179,freq=1.0), product of:
              0.11869995 = queryWeight, product of:
                1.9705948 = boost
                4.497956 = idf(docFreq=1337, maxDocs=44218)
                0.013391771 = queryNorm
              0.28112224 = fieldWeight in 2179, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.497956 = idf(docFreq=1337, maxDocs=44218)
                0.0625 = fieldNorm(doc=2179)
          0.06220325 = weight(abstract_txt:opac in 2179) [ClassicSimilarity], result of:
            0.06220325 = score(doc=2179,freq=1.0), product of:
              0.17978857 = queryWeight, product of:
                2.425231 = boost
                5.53568 = idf(docFreq=473, maxDocs=44218)
                0.013391771 = queryNorm
              0.34598 = fieldWeight in 2179, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.53568 = idf(docFreq=473, maxDocs=44218)
                0.0625 = fieldNorm(doc=2179)
          0.23371181 = weight(abstract_txt:specifity in 2179) [ClassicSimilarity], result of:
            0.23371181 = score(doc=2179,freq=1.0), product of:
              0.43451738 = queryWeight, product of:
                3.7702975 = boost
                8.6058445 = idf(docFreq=21, maxDocs=44218)
                0.013391771 = queryNorm
              0.5378653 = fieldWeight in 2179, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.6058445 = idf(docFreq=21, maxDocs=44218)
                0.0625 = fieldNorm(doc=2179)
        0.24 = coord(6/25)
    
  5. Gomez, I.: Coping with the problem of subject classification diversity (1996) 0.09
    0.09291661 = sum of:
      0.09291661 = product of:
        0.5807288 = sum of:
          0.0494883 = weight(abstract_txt:classification in 5074) [ClassicSimilarity], result of:
            0.0494883 = score(doc=5074,freq=2.0), product of:
              0.093501285 = queryWeight, product of:
                1.7489638 = boost
                3.9920752 = idf(docFreq=2218, maxDocs=44218)
                0.013391771 = queryNorm
              0.52927935 = fieldWeight in 5074, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.9920752 = idf(docFreq=2218, maxDocs=44218)
                0.09375 = fieldNorm(doc=5074)
          0.048815306 = weight(abstract_txt:problem in 5074) [ClassicSimilarity], result of:
            0.048815306 = score(doc=5074,freq=1.0), product of:
              0.11673378 = queryWeight, product of:
                1.9542059 = boost
                4.460548 = idf(docFreq=1388, maxDocs=44218)
                0.013391771 = queryNorm
              0.41817635 = fieldWeight in 5074, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.460548 = idf(docFreq=1388, maxDocs=44218)
                0.09375 = fieldNorm(doc=5074)
          0.1318575 = weight(abstract_txt:codes in 5074) [ClassicSimilarity], result of:
            0.1318575 = score(doc=5074,freq=1.0), product of:
              0.22641008 = queryWeight, product of:
                2.7215726 = boost
                6.2120905 = idf(docFreq=240, maxDocs=44218)
                0.013391771 = queryNorm
              0.5823835 = fieldWeight in 5074, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.2120905 = idf(docFreq=240, maxDocs=44218)
                0.09375 = fieldNorm(doc=5074)
          0.35056773 = weight(abstract_txt:specifity in 5074) [ClassicSimilarity], result of:
            0.35056773 = score(doc=5074,freq=1.0), product of:
              0.43451738 = queryWeight, product of:
                3.7702975 = boost
                8.6058445 = idf(docFreq=21, maxDocs=44218)
                0.013391771 = queryNorm
              0.8067979 = fieldWeight in 5074, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.6058445 = idf(docFreq=21, maxDocs=44218)
                0.09375 = fieldNorm(doc=5074)
        0.16 = coord(4/25)