Alberico, R.; Micco, M.: Expert systems for reference and information retrieval (1990)
0.01
0.01367109 = product of:
0.06835545 = sum of:
0.06835545 = weight(_text_:r in 8875) [ClassicSimilarity], result of:
0.06835545 = score(doc=8875,freq=2.0), product of:
0.15574889 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.04705037 = queryNorm
0.4388824 = fieldWeight in 8875, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.09375 = fieldNorm(doc=8875)
0.2 = coord(1/5)