Chu, C.M.; O'Brien, A.: Subject analysis : the critical first stage in indexing (1993)
0.02
0.0177509 = product of:
0.0355018 = sum of:
0.0355018 = product of:
0.0710036 = sum of:
0.0710036 = weight(_text_:1993 in 6472) [ClassicSimilarity], result of:
0.0710036 = score(doc=6472,freq=5.0), product of:
0.17458819 = queryWeight, product of:
3.8800673 = idf(docFreq=2481, maxDocs=44218)
0.044996176 = queryNorm
0.4066919 = fieldWeight in 6472, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
3.8800673 = idf(docFreq=2481, maxDocs=44218)
0.046875 = fieldNorm(doc=6472)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of information science. 19(1993), S.439-454
- Year
- 1993