Nakkouzi, Z.S.; Eastman, C.M.: Query formulation for handling negation in information retrieval systems (1990)
0.05
0.0457174 = product of:
0.0914348 = sum of:
0.0914348 = product of:
0.1828696 = sum of:
0.1828696 = weight(_text_:182 in 3531) [ClassicSimilarity], result of:
0.1828696 = score(doc=3531,freq=2.0), product of:
0.32181117 = queryWeight, product of:
6.429029 = idf(docFreq=193, maxDocs=44218)
0.050055955 = queryNorm
0.56825125 = fieldWeight in 3531, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.429029 = idf(docFreq=193, maxDocs=44218)
0.0625 = fieldNorm(doc=3531)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science. 41(1990) no.3, S.171-182