Croft, W.B.: Knowledge-based and statistical approaches to text retrieval (1993)
0.02
0.021780973 = product of:
0.043561947 = sum of:
0.043561947 = product of:
0.08712389 = sum of:
0.08712389 = weight(_text_:systems in 7863) [ClassicSimilarity], result of:
0.08712389 = score(doc=7863,freq=2.0), product of:
0.16037072 = queryWeight, product of:
3.0731742 = idf(docFreq=5561, maxDocs=44218)
0.052184064 = queryNorm
0.5432656 = fieldWeight in 7863, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0731742 = idf(docFreq=5561, maxDocs=44218)
0.125 = fieldNorm(doc=7863)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- IEEE expert intelligent systems and their applications. 8(1993) no.2, S.8-12