Belkin, N.J.; Croft, W.B.: Retrieval techniques (1987)
0.03
0.030693183 = product of:
0.076732956 = sum of:
0.025666492 = weight(_text_:information in 334) [ClassicSimilarity], result of:
0.025666492 = score(doc=334,freq=2.0), product of:
0.08270773 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.047114085 = queryNorm
0.3103276 = fieldWeight in 334, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.125 = fieldNorm(doc=334)
0.051066462 = product of:
0.102132924 = sum of:
0.102132924 = weight(_text_:22 in 334) [ClassicSimilarity], result of:
0.102132924 = score(doc=334,freq=2.0), product of:
0.1649855 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.047114085 = queryNorm
0.61904186 = fieldWeight in 334, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=334)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Source
- Annual review of information science and technology. 22(1987), S.109-145