-
Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.02
0.017460171 = product of:
0.034920342 = sum of:
0.034920342 = product of:
0.069840685 = sum of:
0.069840685 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.069840685 = score(doc=2134,freq=2.0), product of:
0.12893786 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03682014 = 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)
0.5 = coord(1/2)
- Date
- 30. 3.2001 13:32:22
-
Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973)
0.01
0.009977241 = product of:
0.019954482 = sum of:
0.019954482 = product of:
0.039908964 = sum of:
0.039908964 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
0.039908964 = score(doc=5002,freq=2.0), product of:
0.12893786 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03682014 = 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)
0.5 = coord(1/2)
- Date
- 19. 3.1996 11:22:12
-
Crestani, F.; Rijsbergen, C.J. van: Information retrieval by imaging (1996)
0.01
0.0074829306 = product of:
0.014965861 = sum of:
0.014965861 = product of:
0.029931722 = sum of:
0.029931722 = weight(_text_:22 in 6967) [ClassicSimilarity], result of:
0.029931722 = score(doc=6967,freq=2.0), product of:
0.12893786 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03682014 = 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)
0.5 = coord(1/2)
- 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
-
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)
0.01
0.0062977853 = product of:
0.012595571 = sum of:
0.012595571 = product of:
0.025191141 = sum of:
0.025191141 = weight(_text_:m in 7522) [ClassicSimilarity], result of:
0.025191141 = score(doc=7522,freq=2.0), product of:
0.09162503 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.03682014 = queryNorm
0.27493733 = fieldWeight in 7522, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.078125 = fieldNorm(doc=7522)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Rijsbergen, C.J. van: Information retrieval (1979)
0.00
0.0044084494 = product of:
0.008816899 = sum of:
0.008816899 = product of:
0.017633798 = sum of:
0.017633798 = weight(_text_:m in 856) [ClassicSimilarity], result of:
0.017633798 = score(doc=856,freq=2.0), product of:
0.09162503 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.03682014 = queryNorm
0.19245613 = fieldWeight in 856, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.0546875 = fieldNorm(doc=856)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- m
-
Rijsbergen, C.J. van; Lalmas, M.: Information calculus for information retrieval (1996)
0.00
0.0031488927 = product of:
0.0062977853 = sum of:
0.0062977853 = product of:
0.012595571 = sum of:
0.012595571 = weight(_text_:m in 4201) [ClassicSimilarity], result of:
0.012595571 = score(doc=4201,freq=2.0), product of:
0.09162503 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.03682014 = queryNorm
0.13746867 = fieldWeight in 4201, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.0390625 = fieldNorm(doc=4201)
0.5 = coord(1/2)
0.5 = coord(1/2)