Haykin, D.J.: Book classification and the problem of change (1955)
0.04
0.044333804 = product of:
0.08866761 = sum of:
0.08866761 = product of:
0.17733522 = sum of:
0.17733522 = weight(_text_:book in 6231) [ClassicSimilarity], result of:
0.17733522 = score(doc=6231,freq=2.0), product of:
0.2272612 = queryWeight, product of:
4.414126 = idf(docFreq=1454, maxDocs=44218)
0.051484983 = queryNorm
0.78031456 = fieldWeight in 6231, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.414126 = idf(docFreq=1454, maxDocs=44218)
0.125 = fieldNorm(doc=6231)
0.5 = coord(1/2)
0.5 = coord(1/2)