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)
0.06
0.06257732 = product of:
0.12515464 = sum of:
0.12515464 = sum of:
0.054452434 = weight(_text_:systems in 891) [ClassicSimilarity], result of:
0.054452434 = score(doc=891,freq=2.0), product of:
0.16037072 = queryWeight, product of:
3.0731742 = idf(docFreq=5561, maxDocs=44218)
0.052184064 = queryNorm
0.339541 = fieldWeight in 891, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0731742 = idf(docFreq=5561, maxDocs=44218)
0.078125 = fieldNorm(doc=891)
0.0707022 = weight(_text_:22 in 891) [ClassicSimilarity], result of:
0.0707022 = score(doc=891,freq=2.0), product of:
0.1827397 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052184064 = 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
- Footnote
- Übers. des Titels: Classification systems of Chemical Abstracts and of corresponding parts of the database of VINITI
