Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.05
0.045048542 = product of:
0.11262135 = sum of:
0.07164876 = weight(_text_:u in 2134) [ClassicSimilarity], result of:
0.07164876 = score(doc=2134,freq=2.0), product of:
0.14146142 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.043201655 = queryNorm
0.50648975 = fieldWeight in 2134, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.109375 = fieldNorm(doc=2134)
0.040972594 = product of:
0.08194519 = sum of:
0.08194519 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.08194519 = score(doc=2134,freq=2.0), product of:
0.15128483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043201655 = 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)
0.4 = coord(2/5)
- Date
- 30. 3.2001 13:32:22
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval