-
Wu, Z.; Li, R.; Zhou, Z.; Guo, J.; Jiang, J.; Su, X.: ¬A user sensitive subject protection approach for book search service (2020)
0.04
0.04213868 = sum of:
0.026192958 = product of:
0.10477183 = sum of:
0.10477183 = weight(_text_:z in 5617) [ClassicSimilarity], result of:
0.10477183 = score(doc=5617,freq=4.0), product of:
0.2512649 = queryWeight, product of:
5.337313 = idf(docFreq=577, maxDocs=44218)
0.04707704 = queryNorm
0.41697758 = fieldWeight in 5617, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
5.337313 = idf(docFreq=577, maxDocs=44218)
0.0390625 = fieldNorm(doc=5617)
0.25 = coord(1/4)
0.015945723 = product of:
0.031891447 = sum of:
0.031891447 = weight(_text_:22 in 5617) [ClassicSimilarity], result of:
0.031891447 = score(doc=5617,freq=2.0), product of:
0.16485578 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04707704 = queryNorm
0.19345059 = fieldWeight in 5617, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=5617)
0.5 = coord(1/2)
- Date
- 6. 1.2020 17:22:25
-
Collier, M.W.; Ramsden, A.; Wu, Z.: ¬The electronic library : virtually a reality? (1993)
0.01
0.012964853 = product of:
0.025929706 = sum of:
0.025929706 = product of:
0.103718825 = sum of:
0.103718825 = weight(_text_:z in 8456) [ClassicSimilarity], result of:
0.103718825 = score(doc=8456,freq=2.0), product of:
0.2512649 = queryWeight, product of:
5.337313 = idf(docFreq=577, maxDocs=44218)
0.04707704 = queryNorm
0.41278675 = fieldWeight in 8456, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.337313 = idf(docFreq=577, maxDocs=44218)
0.0546875 = fieldNorm(doc=8456)
0.25 = coord(1/4)
0.5 = coord(1/2)
-
Wu, Z.; Zhao, D.; Ramsden, A.: From automated library to electronic library : challeneges for infromation retrieval (1994)
0.01
0.012964853 = product of:
0.025929706 = sum of:
0.025929706 = product of:
0.103718825 = sum of:
0.103718825 = weight(_text_:z in 1083) [ClassicSimilarity], result of:
0.103718825 = score(doc=1083,freq=2.0), product of:
0.2512649 = queryWeight, product of:
5.337313 = idf(docFreq=577, maxDocs=44218)
0.04707704 = queryNorm
0.41278675 = fieldWeight in 1083, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.337313 = idf(docFreq=577, maxDocs=44218)
0.0546875 = fieldNorm(doc=1083)
0.25 = coord(1/4)
0.5 = coord(1/2)
-
Morris, S.A.; Yen, G.; Wu, Z.; Asnake, B.: Time line visualization of research fronts (2003)
0.01
0.012964853 = product of:
0.025929706 = sum of:
0.025929706 = product of:
0.103718825 = sum of:
0.103718825 = weight(_text_:z in 1452) [ClassicSimilarity], result of:
0.103718825 = score(doc=1452,freq=2.0), product of:
0.2512649 = queryWeight, product of:
5.337313 = idf(docFreq=577, maxDocs=44218)
0.04707704 = queryNorm
0.41278675 = fieldWeight in 1452, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.337313 = idf(docFreq=577, maxDocs=44218)
0.0546875 = fieldNorm(doc=1452)
0.25 = coord(1/4)
0.5 = coord(1/2)
-
Ramsden, A.; Wu, Z.; Zhao, D.G.: ¬The pilot phase of the ELINOR Electronic Library Project, March 1992-April 1994 (1994)
0.01
0.011112731 = product of:
0.022225462 = sum of:
0.022225462 = product of:
0.08890185 = sum of:
0.08890185 = weight(_text_:z in 2618) [ClassicSimilarity], result of:
0.08890185 = score(doc=2618,freq=2.0), product of:
0.2512649 = queryWeight, product of:
5.337313 = idf(docFreq=577, maxDocs=44218)
0.04707704 = queryNorm
0.35381722 = fieldWeight in 2618, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.337313 = idf(docFreq=577, maxDocs=44218)
0.046875 = fieldNorm(doc=2618)
0.25 = coord(1/4)
0.5 = coord(1/2)
-
Wu, Z.; Xie, J.; Pan, J.; Su, X.: ¬An effective approach for the protection of user privacy in a digital library (2019)
0.01
0.009260609 = product of:
0.018521218 = sum of:
0.018521218 = product of:
0.07408487 = sum of:
0.07408487 = weight(_text_:z in 5782) [ClassicSimilarity], result of:
0.07408487 = score(doc=5782,freq=2.0), product of:
0.2512649 = queryWeight, product of:
5.337313 = idf(docFreq=577, maxDocs=44218)
0.04707704 = queryNorm
0.29484767 = fieldWeight in 5782, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.337313 = idf(docFreq=577, maxDocs=44218)
0.0390625 = fieldNorm(doc=5782)
0.25 = coord(1/4)
0.5 = coord(1/2)
-
Wu, Z.; Lu, C.; Zhao, Y.; Xie, J.; Zou, D.; Su, X.: ¬The protection of user preference privacy in personalized information retrieval : challenges and overviews (2021)
0.01
0.009260609 = product of:
0.018521218 = sum of:
0.018521218 = product of:
0.07408487 = sum of:
0.07408487 = weight(_text_:z in 520) [ClassicSimilarity], result of:
0.07408487 = score(doc=520,freq=2.0), product of:
0.2512649 = queryWeight, product of:
5.337313 = idf(docFreq=577, maxDocs=44218)
0.04707704 = queryNorm
0.29484767 = fieldWeight in 520, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.337313 = idf(docFreq=577, maxDocs=44218)
0.0390625 = fieldNorm(doc=520)
0.25 = coord(1/4)
0.5 = coord(1/2)