-
Sparck Jones, K.; Walker, S.; Robertson, S.E.: ¬A probabilistic model of information retrieval : development and comparative experiments - part 1 (2000)
0.07
0.07157157 = product of:
0.14314315 = sum of:
0.14314315 = product of:
0.2862863 = sum of:
0.2862863 = weight(_text_:s.e in 4181) [ClassicSimilarity], result of:
0.2862863 = score(doc=4181,freq=2.0), product of:
0.30782345 = queryWeight, product of:
7.014756 = idf(docFreq=107, maxDocs=44218)
0.043882273 = queryNorm
0.93003404 = fieldWeight in 4181, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.014756 = idf(docFreq=107, maxDocs=44218)
0.09375 = fieldNorm(doc=4181)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Sparck Jones, K.; Walker, S.; Robertson, S.E.: ¬A probabilistic model of information retrieval : development and comparative experiments - part 2 (2000)
0.07
0.07157157 = product of:
0.14314315 = sum of:
0.14314315 = product of:
0.2862863 = sum of:
0.2862863 = weight(_text_:s.e in 4286) [ClassicSimilarity], result of:
0.2862863 = score(doc=4286,freq=2.0), product of:
0.30782345 = queryWeight, product of:
7.014756 = idf(docFreq=107, maxDocs=44218)
0.043882273 = queryNorm
0.93003404 = fieldWeight in 4286, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.014756 = idf(docFreq=107, maxDocs=44218)
0.09375 = fieldNorm(doc=4286)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Robertson, S.E.; Walker, S.; Beaulieu, M.: Experimentation as a way of life : Okapi at TREC (2000)
0.07
0.07157157 = product of:
0.14314315 = sum of:
0.14314315 = product of:
0.2862863 = sum of:
0.2862863 = weight(_text_:s.e in 6030) [ClassicSimilarity], result of:
0.2862863 = score(doc=6030,freq=2.0), product of:
0.30782345 = queryWeight, product of:
7.014756 = idf(docFreq=107, maxDocs=44218)
0.043882273 = queryNorm
0.93003404 = fieldWeight in 6030, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.014756 = idf(docFreq=107, maxDocs=44218)
0.09375 = fieldNorm(doc=6030)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Robertson, S.E.; Walker, S.; Beaulieu, M.M.; Gatford, M.; Payne, A.: Okapi at TREC-4 (1996)
0.07
0.07157157 = product of:
0.14314315 = sum of:
0.14314315 = product of:
0.2862863 = sum of:
0.2862863 = weight(_text_:s.e in 7546) [ClassicSimilarity], result of:
0.2862863 = score(doc=7546,freq=2.0), product of:
0.30782345 = queryWeight, product of:
7.014756 = idf(docFreq=107, maxDocs=44218)
0.043882273 = queryNorm
0.93003404 = fieldWeight in 7546, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.014756 = idf(docFreq=107, maxDocs=44218)
0.09375 = fieldNorm(doc=7546)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Beaulieu, M.M.; Gatford, M.; Huang, X.; Robertson, S.E.; Walker, S.; Williams, P.: Okapi an TREC-5 (1997)
0.07
0.07157157 = product of:
0.14314315 = sum of:
0.14314315 = product of:
0.2862863 = sum of:
0.2862863 = weight(_text_:s.e in 3097) [ClassicSimilarity], result of:
0.2862863 = score(doc=3097,freq=2.0), product of:
0.30782345 = queryWeight, product of:
7.014756 = idf(docFreq=107, maxDocs=44218)
0.043882273 = queryNorm
0.93003404 = fieldWeight in 3097, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.014756 = idf(docFreq=107, maxDocs=44218)
0.09375 = fieldNorm(doc=3097)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Robertson, S.E.; Walker, S.: Some simple effective approximations to the 2-Poisson molde for probabilisitc weighted retrieval (1979)
0.06
0.059642978 = product of:
0.119285956 = sum of:
0.119285956 = product of:
0.23857191 = sum of:
0.23857191 = weight(_text_:s.e in 1940) [ClassicSimilarity], result of:
0.23857191 = score(doc=1940,freq=2.0), product of:
0.30782345 = queryWeight, product of:
7.014756 = idf(docFreq=107, maxDocs=44218)
0.043882273 = queryNorm
0.7750284 = fieldWeight in 1940, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.014756 = idf(docFreq=107, maxDocs=44218)
0.078125 = fieldNorm(doc=1940)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Robertson, S.E.; Walker, S.; Beaulieu, M.: Laboratory experiments with Okapi : participation in the TREC programme (1997)
0.04
0.041750085 = product of:
0.08350017 = sum of:
0.08350017 = product of:
0.16700034 = sum of:
0.16700034 = weight(_text_:s.e in 2216) [ClassicSimilarity], result of:
0.16700034 = score(doc=2216,freq=2.0), product of:
0.30782345 = queryWeight, product of:
7.014756 = idf(docFreq=107, maxDocs=44218)
0.043882273 = queryNorm
0.54251987 = fieldWeight in 2216, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.014756 = idf(docFreq=107, maxDocs=44218)
0.0546875 = fieldNorm(doc=2216)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Robertson, S.E.; Walker, S.; Hancock-Beaulieu, M.M.: Large test collection experiments of an operational, interactive system : OKAPI at TREC (1995)
0.04
0.041750085 = product of:
0.08350017 = sum of:
0.08350017 = product of:
0.16700034 = sum of:
0.16700034 = weight(_text_:s.e in 6964) [ClassicSimilarity], result of:
0.16700034 = score(doc=6964,freq=2.0), product of:
0.30782345 = queryWeight, product of:
7.014756 = idf(docFreq=107, maxDocs=44218)
0.043882273 = queryNorm
0.54251987 = fieldWeight in 6964, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.014756 = idf(docFreq=107, maxDocs=44218)
0.0546875 = fieldNorm(doc=6964)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Walker, S.: Improving subject access painlessly : recent work on the Okapi online catalogue projects (1988)
0.02
0.023781769 = product of:
0.047563538 = sum of:
0.047563538 = product of:
0.095127076 = sum of:
0.095127076 = weight(_text_:22 in 7403) [ClassicSimilarity], result of:
0.095127076 = score(doc=7403,freq=2.0), product of:
0.15366824 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043882273 = queryNorm
0.61904186 = fieldWeight in 7403, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=7403)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Program. 22(1988), S.21-31
-
Walker, S.: ¬The Okapi online catalogue research projects (1989)
0.01
0.014863606 = product of:
0.029727211 = sum of:
0.029727211 = product of:
0.059454422 = sum of:
0.059454422 = weight(_text_:22 in 1942) [ClassicSimilarity], result of:
0.059454422 = score(doc=1942,freq=2.0), product of:
0.15366824 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.043882273 = queryNorm
0.38690117 = fieldWeight in 1942, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=1942)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 16. 8.1998 11:22:08
