-
Robertson, S.E.: ¬The methodology of information retrieval experiment (1981)
0.01
0.013683792 = product of:
0.09578654 = sum of:
0.024132615 = weight(_text_:information in 3146) [ClassicSimilarity], result of:
0.024132615 = score(doc=3146,freq=4.0), product of:
0.05498814 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.031323742 = queryNorm
0.43886948 = fieldWeight in 3146, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.125 = fieldNorm(doc=3146)
0.071653925 = weight(_text_:retrieval in 3146) [ClassicSimilarity], result of:
0.071653925 = score(doc=3146,freq=4.0), product of:
0.094751656 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.031323742 = queryNorm
0.75622874 = fieldWeight in 3146, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.125 = fieldNorm(doc=3146)
0.14285715 = coord(2/14)
- Source
- Information retrieval experiment. Ed.: K. Sparck Jones
-
Robertson, S.E.: Some recent theories and models in information retrieval (1980)
0.01
0.008595351 = product of:
0.060167458 = sum of:
0.022167224 = weight(_text_:information in 1326) [ClassicSimilarity], result of:
0.022167224 = score(doc=1326,freq=6.0), product of:
0.05498814 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.031323742 = queryNorm
0.40312737 = fieldWeight in 1326, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=1326)
0.038000233 = weight(_text_:retrieval in 1326) [ClassicSimilarity], result of:
0.038000233 = score(doc=1326,freq=2.0), product of:
0.094751656 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.031323742 = queryNorm
0.40105087 = fieldWeight in 1326, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=1326)
0.14285715 = coord(2/14)
- Source
- Theory and application of information research. Proc. of the 2nd Int. Research Forum on Information Science, 3.-6.8.1977, Copenhagen. Ed.: O. Harbo u. L. Kajberg
-
Robertson, S.E.: On relevance weight estimation and query expansion (1986)
0.00
0.0022619187 = product of:
0.03166686 = sum of:
0.03166686 = weight(_text_:retrieval in 3875) [ClassicSimilarity], result of:
0.03166686 = score(doc=3875,freq=2.0), product of:
0.094751656 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.031323742 = queryNorm
0.33420905 = fieldWeight in 3875, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=3875)
0.071428575 = coord(1/14)
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Bovey, J.D.; Robertson, S.E.: ¬An algorithm for weighted searching on a Boolean system (1984)
0.00
0.0010665212 = product of:
0.014931295 = sum of:
0.014931295 = weight(_text_:information in 788) [ClassicSimilarity], result of:
0.014931295 = score(doc=788,freq=2.0), product of:
0.05498814 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.031323742 = queryNorm
0.27153665 = fieldWeight in 788, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.109375 = fieldNorm(doc=788)
0.071428575 = coord(1/14)
- Source
- Information technology: research and development. 3(1984) no.1, S.84-87