Leung, C.-H.; Kan, W.-K.: ¬A statistical learning approach to automatic indexing of controlled index terms (1997)
0.01
0.008520709 = product of:
0.017041419 = sum of:
0.017041419 = product of:
0.034082837 = sum of:
0.034082837 = weight(_text_:c in 6497) [ClassicSimilarity], result of:
0.034082837 = score(doc=6497,freq=2.0), product of:
0.14905113 = queryWeight, product of:
3.4494052 = idf(docFreq=3817, maxDocs=44218)
0.043210678 = queryNorm
0.22866541 = fieldWeight in 6497, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.4494052 = idf(docFreq=3817, maxDocs=44218)
0.046875 = fieldNorm(doc=6497)
0.5 = coord(1/2)
0.5 = coord(1/2)