Document (#8543)

Author
Tenopir, C.
Title
Online databases : overcoming the 'black box' syndrome
Source
Library journal. 119(1994) no.10, S.38-40
Year
1994
Abstract
Knowing the inner workings of an online or CD-ROM system may help to explain strange results, improve search strategies and aid trouble shooting. Discusses search strategies for Boolean and for statistical search engines; how DIALOG's Boolean system treats blank spaces; default settings for searches; how DIALOG defines words; stop words; automatioc truncation and automatic substitute features

Similar documents (author)

  1. Tenopir, C.: Full text databases (1984) 4.76
    4.7620935 = sum of:
      4.7620935 = weight(author_txt:tenopir in 398) [ClassicSimilarity], result of:
        4.7620935 = fieldWeight in 398, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.61935 = idf(docFreq=58, maxDocs=44218)
          0.625 = fieldNorm(doc=398)
    
  2. Tenopir, C.: Full text database retrieval performance (1985) 4.76
    4.7620935 = sum of:
      4.7620935 = weight(author_txt:tenopir in 406) [ClassicSimilarity], result of:
        4.7620935 = fieldWeight in 406, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.61935 = idf(docFreq=58, maxDocs=44218)
          0.625 = fieldNorm(doc=406)
    
  3. Tenopir, C.: ¬The user-system interface (1989) 4.76
    4.7620935 = sum of:
      4.7620935 = weight(author_txt:tenopir in 1047) [ClassicSimilarity], result of:
        4.7620935 = fieldWeight in 1047, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.61935 = idf(docFreq=58, maxDocs=44218)
          0.625 = fieldNorm(doc=1047)
    
  4. Tenopir, C.: Searching by controlled vocabulary or free text (1987) 4.76
    4.7620935 = sum of:
      4.7620935 = weight(author_txt:tenopir in 1350) [ClassicSimilarity], result of:
        4.7620935 = fieldWeight in 1350, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.61935 = idf(docFreq=58, maxDocs=44218)
          0.625 = fieldNorm(doc=1350)
    
  5. Tenopir, C.: Evaluation criteria for online, CD-ROM (1992) 4.76
    4.7620935 = sum of:
      4.7620935 = weight(author_txt:tenopir in 6367) [ClassicSimilarity], result of:
        4.7620935 = fieldWeight in 6367, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.61935 = idf(docFreq=58, maxDocs=44218)
          0.625 = fieldNorm(doc=6367)
    

Similar documents (content)

  1. Marner, J.C.: Measuring the success of keyword search strategy in an online catalog (1993) 0.12
    0.12305273 = sum of:
      0.12305273 = product of:
        0.43947405 = sum of:
          0.02129218 = weight(abstract_txt:system in 7163) [ClassicSimilarity], result of:
            0.02129218 = score(doc=7163,freq=2.0), product of:
              0.07143282 = queryWeight, product of:
                1.1039306 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.019187957 = queryNorm
              0.2980728 = fieldWeight in 7163, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.0625 = fieldNorm(doc=7163)
          0.019344375 = weight(abstract_txt:online in 7163) [ClassicSimilarity], result of:
            0.019344375 = score(doc=7163,freq=1.0), product of:
              0.08442366 = queryWeight, product of:
                1.2001208 = boost
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.019187957 = queryNorm
              0.22913451 = fieldWeight in 7163, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.0625 = fieldNorm(doc=7163)
          0.101760514 = weight(abstract_txt:substitute in 7163) [ClassicSimilarity], result of:
            0.101760514 = score(doc=7163,freq=1.0), product of:
              0.20267674 = queryWeight, product of:
                1.3148609 = boost
                8.033325 = idf(docFreq=38, maxDocs=44218)
                0.019187957 = queryNorm
              0.5020828 = fieldWeight in 7163, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.033325 = idf(docFreq=38, maxDocs=44218)
                0.0625 = fieldNorm(doc=7163)
          0.11961212 = weight(abstract_txt:truncation in 7163) [ClassicSimilarity], result of:
            0.11961212 = score(doc=7163,freq=1.0), product of:
              0.22573619 = queryWeight, product of:
                1.3876452 = boost
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.019187957 = queryNorm
              0.5298757 = fieldWeight in 7163, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.0625 = fieldNorm(doc=7163)
          0.05278967 = weight(abstract_txt:strategies in 7163) [ClassicSimilarity], result of:
            0.05278967 = score(doc=7163,freq=1.0), product of:
              0.16486445 = queryWeight, product of:
                1.67709 = boost
                5.123207 = idf(docFreq=715, maxDocs=44218)
                0.019187957 = queryNorm
              0.32020044 = fieldWeight in 7163, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.123207 = idf(docFreq=715, maxDocs=44218)
                0.0625 = fieldNorm(doc=7163)
          0.028824665 = weight(abstract_txt:search in 7163) [ClassicSimilarity], result of:
            0.028824665 = score(doc=7163,freq=1.0), product of:
              0.12607655 = queryWeight, product of:
                1.796204 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.019187957 = queryNorm
              0.22862828 = fieldWeight in 7163, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=7163)
          0.09585052 = weight(abstract_txt:boolean in 7163) [ClassicSimilarity], result of:
            0.09585052 = score(doc=7163,freq=1.0), product of:
              0.24537145 = queryWeight, product of:
                2.0459964 = boost
                6.2501497 = idf(docFreq=231, maxDocs=44218)
                0.019187957 = queryNorm
              0.39063436 = fieldWeight in 7163, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.2501497 = idf(docFreq=231, maxDocs=44218)
                0.0625 = fieldNorm(doc=7163)
        0.28 = coord(7/25)
    
  2. Vickery, B.C.; Vickery, A.: ¬An application of language processing for a search interface (1992) 0.10
    0.09797753 = sum of:
      0.09797753 = product of:
        0.48988762 = sum of:
          0.026347727 = weight(abstract_txt:system in 2757) [ClassicSimilarity], result of:
            0.026347727 = score(doc=2757,freq=1.0), product of:
              0.07143282 = queryWeight, product of:
                1.1039306 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.019187957 = queryNorm
              0.36884624 = fieldWeight in 2757, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.109375 = fieldNorm(doc=2757)
          0.033852655 = weight(abstract_txt:online in 2757) [ClassicSimilarity], result of:
            0.033852655 = score(doc=2757,freq=1.0), product of:
              0.08442366 = queryWeight, product of:
                1.2001208 = boost
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.019187957 = queryNorm
              0.4009854 = fieldWeight in 2757, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.109375 = fieldNorm(doc=2757)
          0.2093212 = weight(abstract_txt:truncation in 2757) [ClassicSimilarity], result of:
            0.2093212 = score(doc=2757,freq=1.0), product of:
              0.22573619 = queryWeight, product of:
                1.3876452 = boost
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.019187957 = queryNorm
              0.92728245 = fieldWeight in 2757, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.109375 = fieldNorm(doc=2757)
          0.14902863 = weight(abstract_txt:words in 2757) [ClassicSimilarity], result of:
            0.14902863 = score(doc=2757,freq=2.0), product of:
              0.17998604 = queryWeight, product of:
                1.7523154 = boost
                5.353007 = idf(docFreq=568, maxDocs=44218)
                0.019187957 = queryNorm
              0.828001 = fieldWeight in 2757, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.353007 = idf(docFreq=568, maxDocs=44218)
                0.109375 = fieldNorm(doc=2757)
          0.0713374 = weight(abstract_txt:search in 2757) [ClassicSimilarity], result of:
            0.0713374 = score(doc=2757,freq=2.0), product of:
              0.12607655 = queryWeight, product of:
                1.796204 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.019187957 = queryNorm
              0.5658261 = fieldWeight in 2757, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.109375 = fieldNorm(doc=2757)
        0.2 = coord(5/25)
    
  3. Bell, S.S.: Librarian's guide to online searching (2006) 0.08
    0.08438062 = sum of:
      0.08438062 = product of:
        0.42190307 = sum of:
          0.024180468 = weight(abstract_txt:online in 420) [ClassicSimilarity], result of:
            0.024180468 = score(doc=420,freq=1.0), product of:
              0.08442366 = queryWeight, product of:
                1.2001208 = boost
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.019187957 = queryNorm
              0.28641814 = fieldWeight in 420, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.078125 = fieldNorm(doc=420)
          0.14951515 = weight(abstract_txt:truncation in 420) [ClassicSimilarity], result of:
            0.14951515 = score(doc=420,freq=1.0), product of:
              0.22573619 = queryWeight, product of:
                1.3876452 = boost
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.019187957 = queryNorm
              0.66234463 = fieldWeight in 420, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.478011 = idf(docFreq=24, maxDocs=44218)
                0.078125 = fieldNorm(doc=420)
          0.06598709 = weight(abstract_txt:strategies in 420) [ClassicSimilarity], result of:
            0.06598709 = score(doc=420,freq=1.0), product of:
              0.16486445 = queryWeight, product of:
                1.67709 = boost
                5.123207 = idf(docFreq=715, maxDocs=44218)
                0.019187957 = queryNorm
              0.40025055 = fieldWeight in 420, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.123207 = idf(docFreq=715, maxDocs=44218)
                0.078125 = fieldNorm(doc=420)
          0.062407233 = weight(abstract_txt:search in 420) [ClassicSimilarity], result of:
            0.062407233 = score(doc=420,freq=3.0), product of:
              0.12607655 = queryWeight, product of:
                1.796204 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.019187957 = queryNorm
              0.49499476 = fieldWeight in 420, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.078125 = fieldNorm(doc=420)
          0.119813144 = weight(abstract_txt:boolean in 420) [ClassicSimilarity], result of:
            0.119813144 = score(doc=420,freq=1.0), product of:
              0.24537145 = queryWeight, product of:
                2.0459964 = boost
                6.2501497 = idf(docFreq=231, maxDocs=44218)
                0.019187957 = queryNorm
              0.48829293 = fieldWeight in 420, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.2501497 = idf(docFreq=231, maxDocs=44218)
                0.078125 = fieldNorm(doc=420)
        0.2 = coord(5/25)
    
  4. Tenopir, C.: Online databases : standardization across databases (1994) 0.07
    0.07358798 = sum of:
      0.07358798 = product of:
        0.45992485 = sum of:
          0.100017376 = weight(abstract_txt:dialog in 8359) [ClassicSimilarity], result of:
            0.100017376 = score(doc=8359,freq=1.0), product of:
              0.13796724 = queryWeight, product of:
                1.0848404 = boost
                6.627983 = idf(docFreq=158, maxDocs=44218)
                0.019187957 = queryNorm
              0.72493565 = fieldWeight in 8359, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.627983 = idf(docFreq=158, maxDocs=44218)
                0.109375 = fieldNorm(doc=8359)
          0.047874883 = weight(abstract_txt:online in 8359) [ClassicSimilarity], result of:
            0.047874883 = score(doc=8359,freq=2.0), product of:
              0.08442366 = queryWeight, product of:
                1.2001208 = boost
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.019187957 = queryNorm
              0.56707895 = fieldWeight in 8359, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.109375 = fieldNorm(doc=8359)
          0.2615894 = weight(abstract_txt:dialog's in 8359) [ClassicSimilarity], result of:
            0.2615894 = score(doc=8359,freq=1.0), product of:
              0.26190218 = queryWeight, product of:
                1.4946773 = boost
                9.131938 = idf(docFreq=12, maxDocs=44218)
                0.019187957 = queryNorm
              0.9988057 = fieldWeight in 8359, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.131938 = idf(docFreq=12, maxDocs=44218)
                0.109375 = fieldNorm(doc=8359)
          0.05044316 = weight(abstract_txt:search in 8359) [ClassicSimilarity], result of:
            0.05044316 = score(doc=8359,freq=1.0), product of:
              0.12607655 = queryWeight, product of:
                1.796204 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.019187957 = queryNorm
              0.4000995 = fieldWeight in 8359, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.109375 = fieldNorm(doc=8359)
        0.16 = coord(4/25)
    
  5. Feldman, S.: Testing natural language : comparing DIALOG, TARGET, and DR-LINK (1996) 0.07
    0.07175682 = sum of:
      0.07175682 = product of:
        0.35878408 = sum of:
          0.085729174 = weight(abstract_txt:dialog in 7463) [ClassicSimilarity], result of:
            0.085729174 = score(doc=7463,freq=1.0), product of:
              0.13796724 = queryWeight, product of:
                1.0848404 = boost
                6.627983 = idf(docFreq=158, maxDocs=44218)
                0.019187957 = queryNorm
              0.6213734 = fieldWeight in 7463, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.627983 = idf(docFreq=158, maxDocs=44218)
                0.09375 = fieldNorm(doc=7463)
          0.039116234 = weight(abstract_txt:system in 7463) [ClassicSimilarity], result of:
            0.039116234 = score(doc=7463,freq=3.0), product of:
              0.07143282 = queryWeight, product of:
                1.1039306 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.019187957 = queryNorm
              0.54759467 = fieldWeight in 7463, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.09375 = fieldNorm(doc=7463)
          0.029016562 = weight(abstract_txt:online in 7463) [ClassicSimilarity], result of:
            0.029016562 = score(doc=7463,freq=1.0), product of:
              0.08442366 = queryWeight, product of:
                1.2001208 = boost
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.019187957 = queryNorm
              0.34370178 = fieldWeight in 7463, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.09375 = fieldNorm(doc=7463)
          0.061146345 = weight(abstract_txt:search in 7463) [ClassicSimilarity], result of:
            0.061146345 = score(doc=7463,freq=2.0), product of:
              0.12607655 = queryWeight, product of:
                1.796204 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.019187957 = queryNorm
              0.48499382 = fieldWeight in 7463, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.09375 = fieldNorm(doc=7463)
          0.14377578 = weight(abstract_txt:boolean in 7463) [ClassicSimilarity], result of:
            0.14377578 = score(doc=7463,freq=1.0), product of:
              0.24537145 = queryWeight, product of:
                2.0459964 = boost
                6.2501497 = idf(docFreq=231, maxDocs=44218)
                0.019187957 = queryNorm
              0.58595157 = fieldWeight in 7463, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.2501497 = idf(docFreq=231, maxDocs=44218)
                0.09375 = fieldNorm(doc=7463)
        0.2 = coord(5/25)