-
Robertson, S.E.: ¬The methodology of information retrieval experiment (1981)
0.00
0.004273816 = product of:
0.008547632 = sum of:
0.008547632 = product of:
0.017095264 = sum of:
0.017095264 = weight(_text_:e in 3146) [ClassicSimilarity], result of:
0.017095264 = score(doc=3146,freq=2.0), product of:
0.06727942 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.046807308 = queryNorm
0.2540935 = fieldWeight in 3146, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.125 = fieldNorm(doc=3146)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Language
- e
-
Robertson, S.E.; Thompson, C.L.: ¬An operational evaluation of weighting, ranking and relevance feedback via a front-end system (1987)
0.00
0.003739589 = product of:
0.007479178 = sum of:
0.007479178 = product of:
0.014958356 = sum of:
0.014958356 = weight(_text_:e in 3858) [ClassicSimilarity], result of:
0.014958356 = score(doc=3858,freq=2.0), product of:
0.06727942 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.046807308 = queryNorm
0.2223318 = fieldWeight in 3858, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.109375 = fieldNorm(doc=3858)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Language
- e
-
Bovey, J.D.; Robertson, S.E.: ¬An algorithm for weighted searching on a Boolean system (1984)
0.00
0.003739589 = product of:
0.007479178 = sum of:
0.007479178 = product of:
0.014958356 = sum of:
0.014958356 = weight(_text_:e in 788) [ClassicSimilarity], result of:
0.014958356 = score(doc=788,freq=2.0), product of:
0.06727942 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.046807308 = queryNorm
0.2223318 = fieldWeight in 788, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.109375 = fieldNorm(doc=788)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Language
- e
-
Robertson, S.E.: Some recent theories and models in information retrieval (1980)
0.00
0.0032053618 = product of:
0.0064107236 = sum of:
0.0064107236 = product of:
0.012821447 = sum of:
0.012821447 = weight(_text_:e in 1326) [ClassicSimilarity], result of:
0.012821447 = score(doc=1326,freq=2.0), product of:
0.06727942 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.046807308 = queryNorm
0.19057012 = fieldWeight in 1326, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.09375 = fieldNorm(doc=1326)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Language
- e
-
Robertson, S.E.: On relevance weight estimation and query expansion (1986)
0.00
0.002671135 = product of:
0.00534227 = sum of:
0.00534227 = product of:
0.01068454 = sum of:
0.01068454 = weight(_text_:e in 3875) [ClassicSimilarity], result of:
0.01068454 = score(doc=3875,freq=2.0), product of:
0.06727942 = queryWeight, product of:
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.046807308 = queryNorm
0.15880844 = fieldWeight in 3875, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.43737 = idf(docFreq=28552, maxDocs=44218)
0.078125 = fieldNorm(doc=3875)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Language
- e