Fox, E.; Betrabet, S.; Koushik, M.; Lee, W.: Extended Boolean models (1992)
0.03
0.034131795 = product of:
0.08532949 = sum of:
0.032140747 = weight(_text_:u in 3512) [ClassicSimilarity], result of:
0.032140747 = score(doc=3512,freq=2.0), product of:
0.1480683 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.045219366 = queryNorm
0.21706703 = fieldWeight in 3512, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.046875 = fieldNorm(doc=3512)
0.053188737 = product of:
0.106377475 = sum of:
0.106377475 = weight(_text_:lee in 3512) [ClassicSimilarity], result of:
0.106377475 = score(doc=3512,freq=2.0), product of:
0.269376 = queryWeight, product of:
5.957094 = idf(docFreq=310, maxDocs=44218)
0.045219366 = queryNorm
0.3949033 = fieldWeight in 3512, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.957094 = idf(docFreq=310, maxDocs=44218)
0.046875 = fieldNorm(doc=3512)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Source
- Information retrieval: data structures and algorithms. Ed.: W.B. Frakes u. R. Baeza-Yates