-
Lancaster, F.W.: MEDLARS : report on the evaluation of its operating effiency (1961)
0.03
0.033921964 = product of:
0.0932854 = sum of:
0.0046860883 = weight(_text_:a in 1931) [ClassicSimilarity], result of:
0.0046860883 = score(doc=1931,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.15287387 = fieldWeight in 1931, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=1931)
0.00589224 = weight(_text_:s in 1931) [ClassicSimilarity], result of:
0.00589224 = score(doc=1931,freq=4.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.20385705 = fieldWeight in 1931, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.09375 = fieldNorm(doc=1931)
0.03779129 = weight(_text_:u in 1931) [ClassicSimilarity], result of:
0.03779129 = score(doc=1931,freq=2.0), product of:
0.08704981 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.026584605 = queryNorm
0.43413407 = fieldWeight in 1931, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.09375 = fieldNorm(doc=1931)
0.044915777 = weight(_text_:k in 1931) [ClassicSimilarity], result of:
0.044915777 = score(doc=1931,freq=2.0), product of:
0.09490114 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.026584605 = queryNorm
0.47329018 = fieldWeight in 1931, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.09375 = fieldNorm(doc=1931)
0.36363637 = coord(4/11)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.223-246.
- Source
- American documentation. 20(1969), S.119-142
- Type
- a
-
Lancaster, F.W.: Evaluation within the environment of an operating information service (1981)
0.02
0.0171081 = product of:
0.062729694 = sum of:
0.005467103 = weight(_text_:a in 3150) [ClassicSimilarity], result of:
0.005467103 = score(doc=3150,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.17835285 = fieldWeight in 3150, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=3150)
0.0048608496 = weight(_text_:s in 3150) [ClassicSimilarity], result of:
0.0048608496 = score(doc=3150,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.16817348 = fieldWeight in 3150, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.109375 = fieldNorm(doc=3150)
0.05240174 = weight(_text_:k in 3150) [ClassicSimilarity], result of:
0.05240174 = score(doc=3150,freq=2.0), product of:
0.09490114 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.026584605 = queryNorm
0.5521719 = fieldWeight in 3150, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.109375 = fieldNorm(doc=3150)
0.27272728 = coord(3/11)
- Pages
- S.105-127
- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
- Type
- a
-
Lancaster, F.W.: Evaluation in the context of the digital library (1996)
0.01
0.009332711 = product of:
0.03421994 = sum of:
0.0062481174 = weight(_text_:a in 7886) [ClassicSimilarity], result of:
0.0062481174 = score(doc=7886,freq=8.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.20383182 = fieldWeight in 7886, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=7886)
0.0027776284 = weight(_text_:s in 7886) [ClassicSimilarity], result of:
0.0027776284 = score(doc=7886,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.09609913 = fieldWeight in 7886, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=7886)
0.025194194 = weight(_text_:u in 7886) [ClassicSimilarity], result of:
0.025194194 = score(doc=7886,freq=2.0), product of:
0.08704981 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.026584605 = queryNorm
0.28942272 = fieldWeight in 7886, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.0625 = fieldNorm(doc=7886)
0.27272728 = coord(3/11)
- Abstract
- Digital libraries are sufficiently differnt from more traditional print on paper libraries to present a new set of parameters relating to the evaluation of its use. Discusses evaluation criteria, problems and methods relevant to the digital library environment
- Pages
- S.156-167
- Source
- Towards a worldwide library: a ten year forecast. Proceedings of the 19th International Essen Symposium, 23-26 Sept 1996. Ed.: A.H. Helal u. J.W. Weiss
- Type
- a
-
Xu, H.; Lancaster, F.W.: Redundancy and uniqueness of subject access points in online catalogs (1998)
0.00
0.002690519 = product of:
0.009865236 = sum of:
0.0054389704 = product of:
0.010877941 = sum of:
0.010877941 = weight(_text_:h in 1788) [ClassicSimilarity], result of:
0.010877941 = score(doc=1788,freq=2.0), product of:
0.0660481 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.026584605 = queryNorm
0.16469726 = fieldWeight in 1788, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=1788)
0.5 = coord(1/2)
0.0023430442 = weight(_text_:a in 1788) [ClassicSimilarity], result of:
0.0023430442 = score(doc=1788,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.07643694 = fieldWeight in 1788, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=1788)
0.0020832212 = weight(_text_:s in 1788) [ClassicSimilarity], result of:
0.0020832212 = score(doc=1788,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.072074346 = fieldWeight in 1788, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=1788)
0.27272728 = coord(3/11)
- Source
- Library resources and technical services. 42(1998) no.1, S.61-66
- Type
- a
-
Lancaster, F.W.; Zeter, M.J.; Metzler, L.: Ranganathan's influence examined bibliometrically (1992)
0.00
0.002146068 = product of:
0.011803374 = sum of:
0.0062481174 = weight(_text_:a in 1379) [ClassicSimilarity], result of:
0.0062481174 = score(doc=1379,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.20383182 = fieldWeight in 1379, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=1379)
0.0055552567 = weight(_text_:s in 1379) [ClassicSimilarity], result of:
0.0055552567 = score(doc=1379,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.19219826 = fieldWeight in 1379, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=1379)
0.18181819 = coord(2/11)
- Source
- Libri. 42(1992) no.3, S.268-281
- Type
- a
-
Lancaster, F.W.: Vocabulary control in information retrieval systems (1977)
0.00
0.002146068 = product of:
0.011803374 = sum of:
0.0062481174 = weight(_text_:a in 1774) [ClassicSimilarity], result of:
0.0062481174 = score(doc=1774,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.20383182 = fieldWeight in 1774, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=1774)
0.0055552567 = weight(_text_:s in 1774) [ClassicSimilarity], result of:
0.0055552567 = score(doc=1774,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.19219826 = fieldWeight in 1774, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=1774)
0.18181819 = coord(2/11)
- Source
- Advances in librarianship. 7(1977), S.1-40
- Type
- a
-
Lancaster, F.W.; Mills, J.: Testing indexes and index language devices : the ASLIB Cranfield project (1964)
0.00
0.002146068 = product of:
0.011803374 = sum of:
0.0062481174 = weight(_text_:a in 2261) [ClassicSimilarity], result of:
0.0062481174 = score(doc=2261,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.20383182 = fieldWeight in 2261, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=2261)
0.0055552567 = weight(_text_:s in 2261) [ClassicSimilarity], result of:
0.0055552567 = score(doc=2261,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.19219826 = fieldWeight in 2261, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=2261)
0.18181819 = coord(2/11)
- Source
- American documentation. 15(1964), S.4-13
- Type
- a
-
Lancaster, F.W.; Gillespie, C.J.: Design and evaluation of information systems (1970)
0.00
0.002146068 = product of:
0.011803374 = sum of:
0.0062481174 = weight(_text_:a in 243) [ClassicSimilarity], result of:
0.0062481174 = score(doc=243,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.20383182 = fieldWeight in 243, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=243)
0.0055552567 = weight(_text_:s in 243) [ClassicSimilarity], result of:
0.0055552567 = score(doc=243,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.19219826 = fieldWeight in 243, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=243)
0.18181819 = coord(2/11)
- Source
- Annual review of information science and technology. 5(1970), S.33-70
- Type
- a
-
Lancaster, F.W.; Elliker, C.; Connell, T.H.: Subject analysis (1989)
0.00
0.002146068 = product of:
0.011803374 = sum of:
0.0062481174 = weight(_text_:a in 338) [ClassicSimilarity], result of:
0.0062481174 = score(doc=338,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.20383182 = fieldWeight in 338, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=338)
0.0055552567 = weight(_text_:s in 338) [ClassicSimilarity], result of:
0.0055552567 = score(doc=338,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.19219826 = fieldWeight in 338, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=338)
0.18181819 = coord(2/11)
- Source
- Annual review of information science and technology. 24(1989), S.35-84
- Type
- a
-
Lancaster, F.W.: Do indexing and abstracting have a future? (2003)
0.00
0.0019624678 = product of:
0.010793572 = sum of:
0.0066271294 = weight(_text_:a in 3761) [ClassicSimilarity], result of:
0.0066271294 = score(doc=3761,freq=4.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.2161963 = fieldWeight in 3761, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=3761)
0.0041664424 = weight(_text_:s in 3761) [ClassicSimilarity], result of:
0.0041664424 = score(doc=3761,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.14414869 = fieldWeight in 3761, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.09375 = fieldNorm(doc=3761)
0.18181819 = coord(2/11)
- Source
- Anales de documentación. 6(2003), S.277-288
- Type
- a
-
Lancaster, F.W.; Li, J.: ¬The law of constant accessibility of information (1988/89)
0.00
0.0018778095 = product of:
0.010327952 = sum of:
0.005467103 = weight(_text_:a in 1565) [ClassicSimilarity], result of:
0.005467103 = score(doc=1565,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.17835285 = fieldWeight in 1565, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=1565)
0.0048608496 = weight(_text_:s in 1565) [ClassicSimilarity], result of:
0.0048608496 = score(doc=1565,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.16817348 = fieldWeight in 1565, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.109375 = fieldNorm(doc=1565)
0.18181819 = coord(2/11)
- Source
- Bulletin of the American Society for Information Science. 15(1988/89), S.24-25
- Type
- a
-
Lancaster, F.W.: Evaluation of expert systems in information service applications (1994)
0.00
0.0018778095 = product of:
0.010327952 = sum of:
0.005467103 = weight(_text_:a in 8905) [ClassicSimilarity], result of:
0.005467103 = score(doc=8905,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.17835285 = fieldWeight in 8905, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=8905)
0.0048608496 = weight(_text_:s in 8905) [ClassicSimilarity], result of:
0.0048608496 = score(doc=8905,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.16817348 = fieldWeight in 8905, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.109375 = fieldNorm(doc=8905)
0.18181819 = coord(2/11)
- Pages
- S. -
- Type
- a
-
Pinto, M.; Lancaster, F.W.: Abstracts and abstracting in knowledge discovery (1999)
0.00
0.0018778095 = product of:
0.010327952 = sum of:
0.005467103 = weight(_text_:a in 6233) [ClassicSimilarity], result of:
0.005467103 = score(doc=6233,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.17835285 = fieldWeight in 6233, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=6233)
0.0048608496 = weight(_text_:s in 6233) [ClassicSimilarity], result of:
0.0048608496 = score(doc=6233,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.16817348 = fieldWeight in 6233, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.109375 = fieldNorm(doc=6233)
0.18181819 = coord(2/11)
- Source
- Library trends. 48(1999) no.1, S.234-248
- Type
- a
-
Lancaster, F.W.: Artificial intelligence, expert systems and the digital library (1996)
0.00
0.0017751341 = product of:
0.009763237 = sum of:
0.0069856085 = weight(_text_:a in 839) [ClassicSimilarity], result of:
0.0069856085 = score(doc=839,freq=10.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.22789092 = fieldWeight in 839, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=839)
0.0027776284 = weight(_text_:s in 839) [ClassicSimilarity], result of:
0.0027776284 = score(doc=839,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.09609913 = fieldWeight in 839, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=839)
0.18181819 = coord(2/11)
- Abstract
- Based partly on chapters in a forthcoming book 'Technology and Management in Library and Information Sciences' by F.W. Lancaster and B. Sandore. Some inportant functions of a research library operating largely in a networked digital environment are illustrated. The ability of artificial intelligence and expert system technologies to contribute to these functions is discussed, in the light of a report from the American Association for Artificial Intelligence, as well as experiences with these technologies in the library world and elsewhere
- Source
- Journal of information; communication; and library science. 3(1996) no.2, S.3-14
- Type
- a
-
Lancaster, F.W.: From custodian to knowledge engineer : the evolution of librarianship as a profession (1995)
0.00
0.0017568587 = product of:
0.009662722 = sum of:
0.0072322977 = weight(_text_:a in 3058) [ClassicSimilarity], result of:
0.0072322977 = score(doc=3058,freq=14.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.23593865 = fieldWeight in 3058, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=3058)
0.0024304248 = weight(_text_:s in 3058) [ClassicSimilarity], result of:
0.0024304248 = score(doc=3058,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.08408674 = fieldWeight in 3058, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0546875 = fieldNorm(doc=3058)
0.18181819 = coord(2/11)
- Abstract
- In the monastic library of the Middle Ages, the librarian was essentially a curator, a preserver of collections. For most of history libarians were little more than custodians. The idea of a librarian as a provider of services rather than a collector or preserver of materials, did not emerge until late in the 19th century. Computer and telecommunications technologies have revolutionized the library and greatly expanded the horizons of the librarian. Discusses the ways in which technology has affected the library profession and discusses the role of the librarian in the future. The librarian will increasingly become an information intermediary or information consultant and some will be knowledge engineers involved in the design and construction of information systems and in electronic publishing
- Source
- Journal of information; communication; and library science. 1(1995) no.4, S.3-8
- Type
- a
-
Lancaster, F.W.; Ulvila, J.W.; Humphrey, S.M.; Smith, L.C.; Allen, B.; Herner, S.: Evaluation of interactive knowledge-based systems : overview and design for empirical testing (1996)
0.00
0.0017362813 = product of:
0.009549547 = sum of:
0.006112407 = weight(_text_:a in 3000) [ClassicSimilarity], result of:
0.006112407 = score(doc=3000,freq=10.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.19940455 = fieldWeight in 3000, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=3000)
0.00343714 = weight(_text_:s in 3000) [ClassicSimilarity], result of:
0.00343714 = score(doc=3000,freq=4.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.118916616 = fieldWeight in 3000, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0546875 = fieldNorm(doc=3000)
0.18181819 = coord(2/11)
- Abstract
- An overview of levels and approaches in the evalution of knowledge-based systems is presented. There is a need for empirical studies using objective criteria in advance of completing the technical evaluation of such systems. A methodology for this type of evaluation developed for a particular knowledge-based indexing system is presented. It is suggested that the proposed study may serve as a model for the design of any evaluation in which the results of existing intellectual procedures are compared with results achieved when these procedures are aided by use of an appropriate expert system
- Source
- Journal of the American Society for Information Science. 47(1996) no.1, S.57-69
- Type
- a
-
Lancaster, F.W.: Librarians, technology and mediocrity (1993)
0.00
0.0016980345 = product of:
0.009339189 = sum of:
0.005411029 = weight(_text_:a in 7006) [ClassicSimilarity], result of:
0.005411029 = score(doc=7006,freq=6.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.17652355 = fieldWeight in 7006, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=7006)
0.00392816 = weight(_text_:s in 7006) [ClassicSimilarity], result of:
0.00392816 = score(doc=7006,freq=4.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.1359047 = fieldWeight in 7006, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=7006)
0.18181819 = coord(2/11)
- Abstract
- Two years ago the author gave a keynote talk at the Essen Symposium that suggested that technology has lulled librarians into a false sense of security and that there is no real evidence that the increasing use of technology has improved library services at all. This talk carries this theme one stage further, suggesting that technology may actually encourage mediocrity in library and information services
- Pages
- S.99-113
- Source
- Opportunity 2000: understanding and serving users in an electronic library; 15th Int. Symp., 12.-15.10.1992; Festschrift in honour of Herbert S. White. Ed.: A.H. Helal
- Type
- a
-
Lancaster, F.W.: Networked electronic publishing of the results of scholarly research (1995)
0.00
0.0016593148 = product of:
0.009126231 = sum of:
0.006695806 = weight(_text_:a in 1675) [ClassicSimilarity], result of:
0.006695806 = score(doc=1675,freq=12.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.21843673 = fieldWeight in 1675, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=1675)
0.0024304248 = weight(_text_:s in 1675) [ClassicSimilarity], result of:
0.0024304248 = score(doc=1675,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.08408674 = fieldWeight in 1675, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0546875 = fieldNorm(doc=1675)
0.18181819 = coord(2/11)
- Abstract
- A review of developments in electronic publishing over the last 25 years is followed by a report on a survey conducted, with directors of university libraries and other academic administrators, to determine attitudes toward a networked electronic approach to the publishing of research articles. A major conclusion is that academic administrators do not now consider the academic community well equipped to undertake an enterprise of this kind and would not give it high priority in the allocation of university resources
- Pages
- S.207-225
- Type
- a
-
Lancaster, F.W.: ¬The evolution of electronic publishing (1995)
0.00
0.001609551 = product of:
0.00885253 = sum of:
0.0046860883 = weight(_text_:a in 2446) [ClassicSimilarity], result of:
0.0046860883 = score(doc=2446,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.15287387 = fieldWeight in 2446, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=2446)
0.0041664424 = weight(_text_:s in 2446) [ClassicSimilarity], result of:
0.0041664424 = score(doc=2446,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.14414869 = fieldWeight in 2446, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.09375 = fieldNorm(doc=2446)
0.18181819 = coord(2/11)
- Source
- Library trends. 43(1995) no.4, S.518-527
- Type
- a
-
Lancaster, F.W.: Evaluating the performance of a large computerized information system (1985)
0.00
0.0014570536 = product of:
0.008013794 = sum of:
0.006049714 = weight(_text_:a in 3649) [ClassicSimilarity], result of:
0.006049714 = score(doc=3649,freq=30.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.19735932 = fieldWeight in 3649, product of:
5.477226 = tf(freq=30.0), with freq of:
30.0 = termFreq=30.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.03125 = fieldNorm(doc=3649)
0.00196408 = weight(_text_:s in 3649) [ClassicSimilarity], result of:
0.00196408 = score(doc=3649,freq=4.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.06795235 = fieldWeight in 3649, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.03125 = fieldNorm(doc=3649)
0.18181819 = coord(2/11)
- Abstract
- F. W. Lancaster is known for his writing an the state of the art in librarylinformation science. His skill in identifying significant contributions and synthesizing literature in fields as diverse as online systems, vocabulary control, measurement and evaluation, and the paperless society have earned him esteem as a chronicler of information science. Equally deserving of repute is his own contribution to research in the discipline-his evaluation of the MEDLARS operating system. The MEDLARS study is notable for several reasons. It was the first large-scale application of retrieval experiment methodology to the evaluation of an actual operating system. As such, problems had to be faced that do not arise in laboratory-like conditions. One example is the problem of recall: how to determine, for a very large and dynamic database, the number of documents relevant to a given search request. By solving this problem and others attendant upon transferring an experimental methodology to the real world, Lancaster created a constructive procedure that could be used to improve the design and functioning of retrieval systems. The MEDLARS study is notable also for its contribution to our understanding of what constitutes a good index language and good indexing. The ideal retrieval system would be one that retrieves all and only relevant documents. The failures that occur in real operating systems, when a relevant document is not retrieved (a recall failure) or an irrelevant document is retrieved (a precision failure), can be analysed to assess the impact of various factors an the performance of the system. This is exactly what Lancaster did. He found both the MEDLARS indexing and the McSH index language to be significant factors affecting retrieval performance. The indexing, primarily because it was insufficiently exhaustive, explained a large number of recall failures. The index language, largely because of its insufficient specificity, accounted for a large number of precision failures. The purpose of identifying factors responsible for a system's failures is ultimately to improve the system. Unlike many user studies, the MEDLARS evaluation yielded recommendations that were eventually implemented.* Indexing exhaustivity was increased and the McSH index language was enriched with more specific terms and a larger entry vocabulary.
- Footnote
- Original in: Journal of the American Medical Association 207(1969) S.114-120.
- Pages
- S.326-339
- Source
- Theory of subject analysis: a sourcebook. Ed.: L.M. Chan, et al
- Type
- a
