-
Al-Hawamdeh, S.; Smith, G.; Willett, P.; Vere, R. de: Using nearest-neighbour searching techniques to access full-text documents (1991)
0.00
0.001119373 = product of:
0.002238746 = sum of:
0.002238746 = product of:
0.006716238 = sum of:
0.006716238 = weight(_text_:s in 2300) [ClassicSimilarity], result of:
0.006716238 = score(doc=2300,freq=4.0), product of:
0.049418733 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04545348 = queryNorm
0.1359047 = fieldWeight in 2300, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=2300)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Online review. 15(1991) nos.3/4, S.173-190
-
Willett, P.: Best-match text retrieval (1993)
0.00
9.893953E-4 = product of:
0.0019787906 = sum of:
0.0019787906 = product of:
0.0059363716 = sum of:
0.0059363716 = weight(_text_:s in 7818) [ClassicSimilarity], result of:
0.0059363716 = score(doc=7818,freq=2.0), product of:
0.049418733 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04545348 = queryNorm
0.120123915 = fieldWeight in 7818, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=7818)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Library and information briefings. 1993, no.49, S.1-11
-
Jones, G.; Robertson, A.M.; Willett, P.: ¬An introduction to genetic algorithms and to their use in information retrieval (1994)
0.00
7.915163E-4 = product of:
0.0015830325 = sum of:
0.0015830325 = product of:
0.0047490974 = sum of:
0.0047490974 = weight(_text_:s in 7415) [ClassicSimilarity], result of:
0.0047490974 = score(doc=7415,freq=2.0), product of:
0.049418733 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04545348 = queryNorm
0.09609913 = fieldWeight in 7415, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=7415)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Online and CD-ROM review. 18(1994) no.1, S.3-12
-
Robertson, M.; Willett, P.: ¬An upperbound to the performance of ranked output searching : optimal weighting of query terms using a genetic algorithms (1996)
0.00
7.915163E-4 = product of:
0.0015830325 = sum of:
0.0015830325 = product of:
0.0047490974 = sum of:
0.0047490974 = weight(_text_:s in 6977) [ClassicSimilarity], result of:
0.0047490974 = score(doc=6977,freq=2.0), product of:
0.049418733 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04545348 = queryNorm
0.09609913 = fieldWeight in 6977, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=6977)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Journal of documentation. 52(1996) no.4, S.405-420