Ernest, D.J.; Lange, H.R.; Herring, D.: ¬An online comparison of three library science databases (1988)
0.02
0.01605686 = product of:
0.03211372 = sum of:
0.03211372 = product of:
0.06422744 = sum of:
0.06422744 = weight(_text_:science in 8304) [ClassicSimilarity], result of:
0.06422744 = score(doc=8304,freq=2.0), product of:
0.13793045 = queryWeight, product of:
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.052363027 = queryNorm
0.4656509 = fieldWeight in 8304, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.6341193 = idf(docFreq=8627, maxDocs=44218)
0.125 = fieldNorm(doc=8304)
0.5 = coord(1/2)
0.5 = coord(1/2)