Fagan, J.L.: ¬The effectiveness of a nonsyntactic approach to automatic phrase indexing for document retrieval (1989)
0.00
8.3789177E-4 = product of:
0.0016757835 = sum of:
0.0016757835 = product of:
0.003351567 = sum of:
0.003351567 = weight(_text_:s in 1845) [ClassicSimilarity], result of:
0.003351567 = score(doc=1845,freq=2.0), product of:
0.055801827 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.05132441 = queryNorm
0.060061958 = fieldWeight in 1845, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=1845)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science. 40(1989) no.2, S.115-132