-
Cleverdon, C.W.: ASLIB Cranfield Research Project : Report on the first stage of an investigation into the comparative efficiency of indexing systems (1960)
0.04
0.039153337 = product of:
0.09788334 = sum of:
0.062763974 = weight(_text_:r in 6158) [ClassicSimilarity], result of:
0.062763974 = score(doc=6158,freq=2.0), product of:
0.14300863 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.043201655 = queryNorm
0.4388824 = fieldWeight in 6158, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.09375 = fieldNorm(doc=6158)
0.035119366 = product of:
0.07023873 = sum of:
0.07023873 = weight(_text_:22 in 6158) [ClassicSimilarity], result of:
0.07023873 = score(doc=6158,freq=2.0), product of:
0.15128483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043201655 = queryNorm
0.46428138 = fieldWeight in 6158, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=6158)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Footnote
- Rez. in: College and research libraries 22(1961) no.3, S.228 (G. Jahoda)
- Type
- r
-
Cleverdon, C.W.: Aslib Cranfield research project : report on the testing and analysis of an investigation into the comparative efficiency of indexing systems (1962)
0.02
0.016737059 = product of:
0.083685294 = sum of:
0.083685294 = weight(_text_:r in 2741) [ClassicSimilarity], result of:
0.083685294 = score(doc=2741,freq=2.0), product of:
0.14300863 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.043201655 = queryNorm
0.5851765 = fieldWeight in 2741, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.125 = fieldNorm(doc=2741)
0.2 = coord(1/5)
- Type
- r
-
Cleverdon, C.W.; Mills, J.; Keen, M.: Factors determining the performance of indexing systems : ASLIB Cranfield research project (1966)
0.01
0.014644927 = product of:
0.073224634 = sum of:
0.073224634 = weight(_text_:r in 5363) [ClassicSimilarity], result of:
0.073224634 = score(doc=5363,freq=2.0), product of:
0.14300863 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.043201655 = queryNorm
0.51202947 = fieldWeight in 5363, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.109375 = fieldNorm(doc=5363)
0.2 = coord(1/5)
- Type
- r
-
Cleverdon, C.W.: ¬The Cranfield tests on index language devices (1967)
0.01
0.012282644 = product of:
0.06141322 = sum of:
0.06141322 = weight(_text_:u in 1957) [ClassicSimilarity], result of:
0.06141322 = score(doc=1957,freq=2.0), product of:
0.14146142 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.043201655 = queryNorm
0.43413407 = fieldWeight in 1957, 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=1957)
0.2 = coord(1/5)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.47-58.