Search (2 results, page 1 of 1)
- Did you mean:
- author's%3a%22Clough%2c P.%22 2
- authors%3a%22Clough%2c P.%22 2
-
Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.02
0.021576365 = product of: 0.04315273 = sum of: 0.04315273 = product of: 0.08630546 = sum of: 0.08630546 = weight(_text_:22 in 2134) [ClassicSimilarity], result of: 0.08630546 = score(doc=2134,freq=2.0), product of: 0.15933464 = queryWeight, product of: 3.5018296 = idf(docFreq=3622, maxDocs=44218) 0.045500398 = 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) 0.5 = coord(1/2)
- Date
- 30. 3.2001 13:32:22
-
Rijsbergen, C.J. van: ¬A non-classical logic for information retrieval (1986)
0.02
0.01949679 = product of: 0.03899358 = sum of: 0.03899358 = product of: 0.07798716 = sum of: 0.07798716 = weight(_text_:p in 1933) [ClassicSimilarity], result of: 0.07798716 = score(doc=1933,freq=2.0), product of: 0.16359726 = queryWeight, product of: 3.5955126 = idf(docFreq=3298, maxDocs=44218) 0.045500398 = queryNorm 0.47670212 = fieldWeight in 1933, product of: 1.4142135 = tf(freq=2.0), with freq of: 2.0 = termFreq=2.0 3.5955126 = idf(docFreq=3298, 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.