-
Robertson, S.E.; Walker, S.; Beaulieu, M.M.; Gatford, M.; Payne, A.: Okapi at TREC-4 (1996)
0.07
0.067431234 = product of:
0.13486247 = sum of:
0.13486247 = product of:
0.26972494 = sum of:
0.26972494 = weight(_text_:m.m in 7546) [ClassicSimilarity], result of:
0.26972494 = score(doc=7546,freq=2.0), product of:
0.29921734 = queryWeight, product of:
6.7990475 = idf(docFreq=133, maxDocs=44218)
0.044008717 = queryNorm
0.90143484 = fieldWeight in 7546, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.7990475 = idf(docFreq=133, 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
0.067431234 = product of:
0.13486247 = sum of:
0.13486247 = product of:
0.26972494 = sum of:
0.26972494 = weight(_text_:m.m in 3097) [ClassicSimilarity], result of:
0.26972494 = score(doc=3097,freq=2.0), product of:
0.29921734 = queryWeight, product of:
6.7990475 = idf(docFreq=133, maxDocs=44218)
0.044008717 = queryNorm
0.90143484 = fieldWeight in 3097, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.7990475 = idf(docFreq=133, maxDocs=44218)
0.09375 = fieldNorm(doc=3097)
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
0.03933489 = product of:
0.07866978 = sum of:
0.07866978 = product of:
0.15733956 = sum of:
0.15733956 = weight(_text_:m.m in 6964) [ClassicSimilarity], result of:
0.15733956 = score(doc=6964,freq=2.0), product of:
0.29921734 = queryWeight, product of:
6.7990475 = idf(docFreq=133, maxDocs=44218)
0.044008717 = queryNorm
0.525837 = fieldWeight in 6964, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.7990475 = idf(docFreq=133, 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
0.023850294 = product of:
0.047700588 = sum of:
0.047700588 = product of:
0.095401175 = sum of:
0.095401175 = weight(_text_:22 in 7403) [ClassicSimilarity], result of:
0.095401175 = score(doc=7403,freq=2.0), product of:
0.15411103 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044008717 = 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
0.014906434 = product of:
0.029812869 = sum of:
0.029812869 = product of:
0.059625737 = sum of:
0.059625737 = weight(_text_:22 in 1942) [ClassicSimilarity], result of:
0.059625737 = score(doc=1942,freq=2.0), product of:
0.15411103 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044008717 = 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