Khytoretskii, V.M.; Efremenkova, V.M.; Tartakovskii, V.A.: Sootnoshenie klassifikatsionykh skhem bazy dannykh Chemical Abstracts i sootvetstvuyushchikh ei chastei sistemy baz dannykh VINITI (2000)
0.03
0.028009143 = product of:
0.056018285 = sum of:
0.056018285 = sum of:
0.0049251704 = weight(_text_:s in 891) [ClassicSimilarity], result of:
0.0049251704 = score(doc=891,freq=2.0), product of:
0.04100075 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.03771094 = queryNorm
0.120123915 = fieldWeight in 891, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=891)
0.051093116 = weight(_text_:22 in 891) [ClassicSimilarity], result of:
0.051093116 = score(doc=891,freq=2.0), product of:
0.13205728 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03771094 = queryNorm
0.38690117 = fieldWeight in 891, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=891)
0.5 = coord(1/2)
- Date
- 1. 4.2002 13:36:22
- Source
- Nauchno- Tekhnicheskaya Informatsiya; Series 1. 2000, no.1, S.26-34