-
Egghe, L.; Rousseau, R.: Topological aspects of information retrieval (1998)
0.05
0.04597169 = product of:
0.09194338 = sum of:
0.09194338 = product of:
0.18388677 = sum of:
0.18388677 = weight(_text_:d.m in 2157) [ClassicSimilarity], result of:
0.18388677 = score(doc=2157,freq=2.0), product of:
0.32220066 = queryWeight, product of:
7.3793993 = idf(docFreq=74, maxDocs=44218)
0.04366218 = queryNorm
0.57072127 = fieldWeight in 2157, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.3793993 = idf(docFreq=74, maxDocs=44218)
0.0546875 = fieldNorm(doc=2157)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Let (DS, DQ, sim) be a retrieval system consisting of a document space DS, a query space QS, and a function sim, expressing the similarity between a document and a query. Following D.M. Everett and S.C. Cater (1992), we introduce topologies on the document space. These topologies are generated by the similarity function sim and the query space QS. 3 topologies will be studied: the retrieval topology, the similarity topology and the (pseudo-)metric one. It is shown that the retrieval topology is the coarsest of the three, while the (pseudo-)metric is the strongest. These 3 topologies are generally different, reflecting distinct topological aspects of information retrieval. We present necessary and sufficient conditions for these topological aspects to be equal
-
Egghe, L.; Guns, R.; Rousseau, R.; Leuven, K.U.: Erratum (2012)
0.01
0.014789056 = product of:
0.029578112 = sum of:
0.029578112 = product of:
0.059156224 = sum of:
0.059156224 = weight(_text_:22 in 4992) [ClassicSimilarity], result of:
0.059156224 = score(doc=4992,freq=2.0), product of:
0.1528975 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04366218 = queryNorm
0.38690117 = fieldWeight in 4992, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=4992)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 14. 2.2012 12:53:22
-
Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996)
0.01
0.008873433 = product of:
0.017746866 = sum of:
0.017746866 = product of:
0.03549373 = sum of:
0.03549373 = weight(_text_:22 in 7659) [ClassicSimilarity], result of:
0.03549373 = score(doc=7659,freq=2.0), product of:
0.1528975 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04366218 = queryNorm
0.23214069 = fieldWeight in 7659, 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=7659)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of information science. 22(1996) no.3, S.165-170
-
Asonuma, A.; Fang, Y.; Rousseau, R.: Reflections on the age distribution of Japanese scientists (2006)
0.01
0.008873433 = product of:
0.017746866 = sum of:
0.017746866 = product of:
0.03549373 = sum of:
0.03549373 = weight(_text_:22 in 5270) [ClassicSimilarity], result of:
0.03549373 = score(doc=5270,freq=2.0), product of:
0.1528975 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04366218 = queryNorm
0.23214069 = fieldWeight in 5270, 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=5270)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 7.2006 15:26:24
-
Ahlgren, P.; Jarneving, B.; Rousseau, R.: Requirements for a cocitation similarity measure, with special reference to Pearson's correlation coefficient (2003)
0.01
0.005915622 = product of:
0.011831244 = sum of:
0.011831244 = product of:
0.023662489 = sum of:
0.023662489 = weight(_text_:22 in 5171) [ClassicSimilarity], result of:
0.023662489 = score(doc=5171,freq=2.0), product of:
0.1528975 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04366218 = queryNorm
0.15476047 = fieldWeight in 5171, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03125 = fieldNorm(doc=5171)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 9. 7.2006 10:22:35