Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.05
0.0466302 = product of:
0.1165755 = sum of:
0.07416435 = weight(_text_:u in 2134) [ClassicSimilarity], result of:
0.07416435 = score(doc=2134,freq=2.0), product of:
0.14642814 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.04471847 = 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)
0.04241115 = product of:
0.0848223 = sum of:
0.0848223 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.0848223 = score(doc=2134,freq=2.0), product of:
0.15659647 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04471847 = 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
Kelledy, F.; Smeaton, A.F.: Signature files and beyond (1996)
0.02
0.020264007 = product of:
0.050660018 = sum of:
0.032483812 = weight(_text_:r in 6973) [ClassicSimilarity], result of:
0.032483812 = score(doc=6973,freq=2.0), product of:
0.14802969 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.04471847 = queryNorm
0.2194412 = fieldWeight in 6973, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.046875 = fieldNorm(doc=6973)
0.018176205 = product of:
0.03635241 = sum of:
0.03635241 = weight(_text_:22 in 6973) [ClassicSimilarity], result of:
0.03635241 = score(doc=6973,freq=2.0), product of:
0.15659647 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04471847 = queryNorm
0.23214069 = fieldWeight in 6973, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=6973)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon