Lancaster, F.W.; Gillespie, C.J.: Design and evaluation of information systems (1970)
0.02
0.019857228 = product of:
0.089357525 = sum of:
0.023950063 = weight(_text_:of in 243) [ClassicSimilarity], result of:
0.023950063 = score(doc=243,freq=4.0), product of:
0.061262865 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.03917671 = queryNorm
0.39093933 = fieldWeight in 243, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.125 = fieldNorm(doc=243)
0.06540746 = weight(_text_:systems in 243) [ClassicSimilarity], result of:
0.06540746 = score(doc=243,freq=2.0), product of:
0.12039685 = queryWeight, product of:
3.0731742 = idf(docFreq=5561, maxDocs=44218)
0.03917671 = queryNorm
0.5432656 = fieldWeight in 243, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0731742 = idf(docFreq=5561, maxDocs=44218)
0.125 = fieldNorm(doc=243)
0.22222222 = coord(2/9)
- Source
- Annual review of information science and technology. 5(1970), S.33-70