Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.04
0.041399103 = product of:
0.062098652 = sum of:
0.014573721 = weight(_text_:a in 2134) [ClassicSimilarity], result of:
0.014573721 = score(doc=2134,freq=4.0), product of:
0.057779714 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.05011046 = queryNorm
0.25222903 = fieldWeight in 2134, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=2134)
0.04752493 = product of:
0.09504986 = sum of:
0.09504986 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.09504986 = score(doc=2134,freq=2.0), product of:
0.1754783 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05011046 = queryNorm
0.5416616 = fieldWeight in 2134, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=2134)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Date
- 30. 3.2001 13:32:22
- Type
- a
