Kristensen, J.; Järvelin, K.: ¬The effectiveness of a searching thesaurus in free-text searching in a full-text database (1990)
0.02
0.015380906 = product of:
0.107666336 = sum of:
0.053833168 = weight(_text_:classification in 2043) [ClassicSimilarity], result of:
0.053833168 = score(doc=2043,freq=2.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.5629819 = fieldWeight in 2043, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.125 = fieldNorm(doc=2043)
0.053833168 = weight(_text_:classification in 2043) [ClassicSimilarity], result of:
0.053833168 = score(doc=2043,freq=2.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.5629819 = fieldWeight in 2043, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.125 = fieldNorm(doc=2043)
0.14285715 = coord(2/14)
- Source
- International classification. 17(1990), S.77-84