Search (7 results, page 1 of 1)

Tenopir, C.: Online systems for information access and retrieval (2008) 0.02
```
0.022434268 = product of:
  0.11217134 = sum of:
    0.11217134 = weight(_text_:books in 5587) [ClassicSimilarity], result of:
      0.11217134 = score(doc=5587,freq=4.0), product of:
        0.24756333 = queryWeight, product of:
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.051222645 = queryNorm
        0.45310158 = fieldWeight in 5587, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.046875 = fieldNorm(doc=5587)
  0.2 = coord(1/5)
```
Abstract

In 1973 F. W. Lancaster published the first textbook about online information retrieval (with E. G. Fayen). That text and his later writings and books on the topics relating to online searching set the precedent for many books to follow. His early work also advocated many changes to the state-of-the-art systems and anticipated many of the characteristics of modern online information retrieval systems. Although the basic underlying structure of modern systems is still similar to what Lancaster wrote about thirty years ago, many of the changes he advocated have occurred. From an era of bibliographic databases on command-driven systems searched by library professionals, online systems have evolved to have friendlier interfaces, include full texts or links to full texts, and are targeted to the end users of the information. The information industry has evolved, as have the online search systems and tools that are so commonplace today.

Tenopir, C.: ASCII full texts (1995) 0.02

0.021151232 = product of:
  0.105756156 = sum of:
    0.105756156 = weight(_text_:books in 3188) [ClassicSimilarity], result of:
      0.105756156 = score(doc=3188,freq=2.0), product of:
        0.24756333 = queryWeight, product of:
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.051222645 = queryNorm
        0.42718828 = fieldWeight in 3188, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.8330836 = idf(docFreq=956, maxDocs=44218)
          0.0625 = fieldNorm(doc=3188)
  0.2 = coord(1/5)

Abstract: Discusses the rapid increase in the availability of the full text of journals, newspapers, documents and books, online and in CD-ROM, in the recent past, noting that full text now makes up 49% of word oriented databases. Explains the differences between image files, ASCII fullt text which is searchable, and ASCII full text which is displayable and downloadable but not searchable, and gives examples of these. Highlights the full text databases which are being introduced by the H.W. Wilson Company

Tenopir, C.; Ennis, L.: ¬The digital reference work of academic libraries (1998) 0.01

0.013740423 = product of:
  0.06870212 = sum of:
    0.06870212 = weight(_text_:22 in 5170) [ClassicSimilarity], result of:
      0.06870212 = score(doc=5170,freq=4.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.38301262 = fieldWeight in 5170, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5170)
  0.2 = coord(1/5)

Source: Online. 22(1998) no.4, S.22-28

Tenopir, C.: Reference services from RLG (1995) 0.01

0.011103938 = product of:
  0.055519693 = sum of:
    0.055519693 = weight(_text_:22 in 2612) [ClassicSimilarity], result of:
      0.055519693 = score(doc=2612,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.30952093 = fieldWeight in 2612, 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=2612)
  0.2 = coord(1/5)

Date: 25.11.1995 19:22:01

Tenopir, C.: Integrating electronic reference (1995) 0.01

0.011103938 = product of:
  0.055519693 = sum of:
    0.055519693 = weight(_text_:22 in 2616) [ClassicSimilarity], result of:
      0.055519693 = score(doc=2616,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.30952093 = fieldWeight in 2616, 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=2616)
  0.2 = coord(1/5)

Date: 25.11.1995 19:22:01

Tenopir, C.; Neufang, R.: Electronic reference options : how they stack up in research libraries (1992) 0.01

0.009715946 = product of:
  0.04857973 = sum of:
    0.04857973 = weight(_text_:22 in 2343) [ClassicSimilarity], result of:
      0.04857973 = score(doc=2343,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.2708308 = fieldWeight in 2343, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2343)
  0.2 = coord(1/5)

Source: Online. 16(1992) no.2, S.22-28

Allard, S.; Levine, K.J.; Tenopir, C.: Design engineers and technical professionals at work : observing information usage in the workplace (2009) 0.01

0.006939962 = product of:
  0.03469981 = sum of:
    0.03469981 = weight(_text_:22 in 2735) [ClassicSimilarity], result of:
      0.03469981 = score(doc=2735,freq=2.0), product of:
        0.17937298 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051222645 = queryNorm
        0.19345059 = fieldWeight in 2735, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2735)
  0.2 = coord(1/5)

Date: 22. 3.2009 12:43:37

Search (7 results, page 1 of 1)

Authors

Years

Themes