-
Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.01
0.008491532 = product of:
0.033966128 = sum of:
0.033966128 = product of:
0.067932256 = sum of:
0.067932256 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.067932256 = score(doc=2134,freq=2.0), product of:
0.12541457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03581401 = 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)
0.25 = coord(1/4)
- Date
- 30. 3.2001 13:32:22
-
Rijsbergen, C.J. van: Retrieval effectiveness (1981)
0.01
0.0067232484 = product of:
0.026892994 = sum of:
0.026892994 = product of:
0.08067898 = sum of:
0.08067898 = weight(_text_:k in 3147) [ClassicSimilarity], result of:
0.08067898 = score(doc=3147,freq=2.0), product of:
0.12784806 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.03581401 = queryNorm
0.63105357 = fieldWeight in 3147, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.125 = fieldNorm(doc=3147)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
-
Rijsbergen, C.J. van: ¬A non-classical logic for information retrieval (1986)
0.01
0.005042436 = product of:
0.020169744 = sum of:
0.020169744 = product of:
0.06050923 = sum of:
0.06050923 = weight(_text_:k in 1933) [ClassicSimilarity], result of:
0.06050923 = score(doc=1933,freq=2.0), product of:
0.12784806 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.03581401 = queryNorm
0.47329018 = fieldWeight in 1933, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.09375 = fieldNorm(doc=1933)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann. 1997. S.268-272.
-
Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973)
0.00
0.0048523042 = product of:
0.019409217 = sum of:
0.019409217 = product of:
0.038818434 = sum of:
0.038818434 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
0.038818434 = score(doc=5002,freq=2.0), product of:
0.12541457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03581401 = queryNorm
0.30952093 = fieldWeight in 5002, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=5002)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 19. 3.1996 11:22:12
-
Crestani, F.; Ruthven, I.; Sanderson, M.; Rijsbergen, C.J. van: ¬The troubles with using a logical model of IR on a large collection of documents : experimenting retrieval by logical imaging on TREC (1996)
0.00
0.0042020297 = product of:
0.016808119 = sum of:
0.016808119 = product of:
0.050424356 = sum of:
0.050424356 = weight(_text_:k in 7522) [ClassicSimilarity], result of:
0.050424356 = score(doc=7522,freq=2.0), product of:
0.12784806 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.03581401 = queryNorm
0.39440846 = fieldWeight in 7522, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.078125 = fieldNorm(doc=7522)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- The Fourth Text Retrieval Conference (TREC-4). Ed.: K. Harman
-
Crestani, F.; Rijsbergen, C.J. van: Information retrieval by imaging (1996)
0.00
0.003639228 = product of:
0.014556912 = sum of:
0.014556912 = product of:
0.029113824 = sum of:
0.029113824 = weight(_text_:22 in 6967) [ClassicSimilarity], result of:
0.029113824 = score(doc=6967,freq=2.0), product of:
0.12541457 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03581401 = queryNorm
0.23214069 = fieldWeight in 6967, 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=6967)
0.5 = coord(1/2)
0.25 = coord(1/4)
- 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
-
Sparck Jones, K.; Rijsbergen, C.J. van: Progress in documentation : Information retrieval test collection (1976)
0.00
0.002941421 = product of:
0.011765684 = sum of:
0.011765684 = product of:
0.03529705 = sum of:
0.03529705 = weight(_text_:k in 4161) [ClassicSimilarity], result of:
0.03529705 = score(doc=4161,freq=2.0), product of:
0.12784806 = queryWeight, product of:
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.03581401 = queryNorm
0.27608594 = fieldWeight in 4161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.569778 = idf(docFreq=3384, maxDocs=44218)
0.0546875 = fieldNorm(doc=4161)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
