Robertson, S.E.; Walker, S.; Beaulieu, M.: Laboratory experiments with Okapi : participation in the TREC programme (1997)
0.00
0.0014889077 = product of:
0.0029778155 = sum of:
0.0029778155 = product of:
0.005955631 = sum of:
0.005955631 = weight(_text_:s in 2216) [ClassicSimilarity], result of:
0.005955631 = score(doc=2216,freq=4.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.118916616 = fieldWeight in 2216, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0546875 = fieldNorm(doc=2216)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of documentation. 53(1997) no.1, S.20-34