Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.02
0.017715551 = product of:
0.053146653 = sum of:
0.012320292 = weight(_text_:in in 2134) [ClassicSimilarity], result of:
0.012320292 = score(doc=2134,freq=2.0), product of:
0.058555514 = queryWeight, product of:
1.3602545 = idf(docFreq=30841, maxDocs=44218)
0.04304747 = queryNorm
0.21040362 = fieldWeight in 2134, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.3602545 = idf(docFreq=30841, maxDocs=44218)
0.109375 = fieldNorm(doc=2134)
0.04082636 = product of:
0.08165272 = sum of:
0.08165272 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.08165272 = score(doc=2134,freq=2.0), product of:
0.1507449 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04304747 = 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)
0.33333334 = coord(2/6)
- Date
- 30. 3.2001 13:32:22
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval