Belkin, N.J.; Croft, W.B.: Retrieval techniques (1987)
0.01
0.0136640305 = product of:
0.054656122 = sum of:
0.054656122 = product of:
0.109312244 = sum of:
0.109312244 = weight(_text_:22 in 334) [ClassicSimilarity], result of:
0.109312244 = score(doc=334,freq=2.0), product of:
0.17658296 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.050425917 = 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)
0.25 = coord(1/4)
- Source
- Annual review of information science and technology. 22(1987), S.109-145