Dong, X.; Su, L.T.: Search engines on the World Wide Web and information retrieval from the Internet : a review and evaluation (1997)
0.02
0.017837493 = product of:
0.035674985 = sum of:
0.035674985 = product of:
0.07134997 = sum of:
0.07134997 = weight(_text_:x in 155) [ClassicSimilarity], result of:
0.07134997 = score(doc=155,freq=2.0), product of:
0.19116588 = queryWeight, product of:
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.045271195 = queryNorm
0.3732359 = fieldWeight in 155, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.2226825 = idf(docFreq=1761, maxDocs=44218)
0.0625 = fieldNorm(doc=155)
0.5 = coord(1/2)
0.5 = coord(1/2)