-
Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.05
0.053368434 = product of:
0.10673687 = sum of:
0.10673687 = sum of:
0.009384387 = weight(_text_:s in 2134) [ClassicSimilarity], result of:
0.009384387 = score(doc=2134,freq=2.0), product of:
0.055801827 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.05132441 = queryNorm
0.16817348 = fieldWeight in 2134, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.109375 = fieldNorm(doc=2134)
0.09735248 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.09735248 = score(doc=2134,freq=2.0), product of:
0.17972933 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05132441 = 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)
- Date
- 30. 3.2001 13:32:22
- Source
- Computer journal. 26(1983), S.239-246
-
Rijsbergen, C.J. van: ¬A non-classical logic for information retrieval (1986)
0.00
0.002843899 = product of:
0.005687798 = sum of:
0.005687798 = product of:
0.011375596 = sum of:
0.011375596 = weight(_text_:s in 1933) [ClassicSimilarity], result of:
0.011375596 = score(doc=1933,freq=4.0), product of:
0.055801827 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.05132441 = queryNorm
0.20385705 = fieldWeight in 1933, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.09375 = fieldNorm(doc=1933)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann. 1997. S.268-272.
- Source
- Computer journal. 29(1986), S.481-485
-
Rijsbergen, C.J. van: Retrieval effectiveness (1981)
0.00
0.0026812535 = product of:
0.005362507 = sum of:
0.005362507 = product of:
0.010725014 = sum of:
0.010725014 = weight(_text_:s in 3147) [ClassicSimilarity], result of:
0.010725014 = score(doc=3147,freq=2.0), product of:
0.055801827 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.05132441 = queryNorm
0.19219826 = fieldWeight in 3147, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=3147)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Pages
- S.32-43
-
Salton, G.; Rijsbergen, C.J. van; Maron, M.E.: Panel on key issues in information retrieval (1983)
0.00
0.0013406267 = product of:
0.0026812535 = sum of:
0.0026812535 = product of:
0.005362507 = sum of:
0.005362507 = weight(_text_:s in 7410) [ClassicSimilarity], result of:
0.005362507 = score(doc=7410,freq=2.0), product of:
0.055801827 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.05132441 = queryNorm
0.09609913 = fieldWeight in 7410, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=7410)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- SIGIR forum. 17(1983) no.4, S.251-267