-
Egghe, L.: ¬A universal method of information retrieval evaluation : the "missing" link M and the universal IR surface (2004)
0.02
0.021077333 = product of:
0.042154666 = sum of:
0.031000827 = weight(_text_:management in 2558) [ClassicSimilarity], result of:
0.031000827 = score(doc=2558,freq=2.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.22344214 = fieldWeight in 2558, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.046875 = fieldNorm(doc=2558)
0.0111538395 = product of:
0.03346152 = sum of:
0.03346152 = weight(_text_:22 in 2558) [ClassicSimilarity], result of:
0.03346152 = score(doc=2558,freq=2.0), product of:
0.14414327 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.041162275 = queryNorm
0.23214069 = fieldWeight in 2558, 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=2558)
0.33333334 = coord(1/3)
0.5 = coord(2/4)
- Date
- 14. 8.2004 19:17:22
- Source
- Information processing and management. 40(2004) no.1, S.21-30
-
Egghe, L.: Expansion of the field of informetrics : the second special issue (2006)
0.02
0.015500413 = product of:
0.062001653 = sum of:
0.062001653 = weight(_text_:management in 7119) [ClassicSimilarity], result of:
0.062001653 = score(doc=7119,freq=2.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.44688427 = fieldWeight in 7119, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.09375 = fieldNorm(doc=7119)
0.25 = coord(1/4)
- Source
- Information processing and management. 42(2006) no.6, S.1405-1407
-
Egghe, L.: Expansion of the field of informetrics : origins and consequences (2005)
0.02
0.015500413 = product of:
0.062001653 = sum of:
0.062001653 = weight(_text_:management in 1910) [ClassicSimilarity], result of:
0.062001653 = score(doc=1910,freq=2.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.44688427 = fieldWeight in 1910, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.09375 = fieldNorm(doc=1910)
0.25 = coord(1/4)
- Source
- Information processing and management. 41(2005) no.6, S.1311-1316
-
Egghe, L.: Existence theorem of the quadruple (P, R, F, M) : precision, recall, fallout and miss (2007)
0.01
0.010960448 = product of:
0.04384179 = sum of:
0.04384179 = weight(_text_:management in 2011) [ClassicSimilarity], result of:
0.04384179 = score(doc=2011,freq=4.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.31599492 = fieldWeight in 2011, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.046875 = fieldNorm(doc=2011)
0.25 = coord(1/4)
- Abstract
- In an earlier paper [Egghe, L. (2004). A universal method of information retrieval evaluation: the "missing" link M and the universal IR surface. Information Processing and Management, 40, 21-30] we showed that, given an IR system, and if P denotes precision, R recall, F fallout and M miss (re-introduced in the paper mentioned above), we have the following relationship between P, R, F and M: P/(1-P)*(1-R)/R*F/(1-F)*(1-M)/M = 1. In this paper we prove the (more difficult) converse: given any four rational numbers in the interval ]0, 1[ satisfying the above equation, then there exists an IR system such that these four numbers (in any order) are the precision, recall, fallout and miss of this IR system. As a consequence we show that any three rational numbers in ]0, 1[ represent any three measures taken from precision, recall, fallout and miss of a certain IR system. We also show that this result is also true for two numbers instead of three.
- Source
- Information processing and management. 43(2007) no.1, S.265-272
-
Egghe, L.: ¬The amount of actions needed for shelving and reshelving (1996)
0.01
0.010333609 = product of:
0.041334435 = sum of:
0.041334435 = weight(_text_:management in 4394) [ClassicSimilarity], result of:
0.041334435 = score(doc=4394,freq=2.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.29792285 = fieldWeight in 4394, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0625 = fieldNorm(doc=4394)
0.25 = coord(1/4)
- Source
- Library management. 17(1996) no.1, S.18-24
-
Egghe, L.; Rousseau, R.: ¬A theoretical study of recall and precision using a topological approach to information retrieval (1998)
0.01
0.010333609 = product of:
0.041334435 = sum of:
0.041334435 = weight(_text_:management in 3267) [ClassicSimilarity], result of:
0.041334435 = score(doc=3267,freq=2.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.29792285 = fieldWeight in 3267, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0625 = fieldNorm(doc=3267)
0.25 = coord(1/4)
- Source
- Information processing and management. 34(1998) nos.2/3, S.191-218
-
Egghe, L.; Rousseau, R.: ¬An h-index weighted by citation impact (2008)
0.01
0.010333609 = product of:
0.041334435 = sum of:
0.041334435 = weight(_text_:management in 695) [ClassicSimilarity], result of:
0.041334435 = score(doc=695,freq=2.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.29792285 = fieldWeight in 695, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0625 = fieldNorm(doc=695)
0.25 = coord(1/4)
- Source
- Information processing and management. 44(2008) no.2, S.770-780
-
Egghe, L.: Vector retrieval, fuzzy retrieval and the universal fuzzy IR surface for IR evaluation (2004)
0.01
0.009041907 = product of:
0.03616763 = sum of:
0.03616763 = weight(_text_:management in 2531) [ClassicSimilarity], result of:
0.03616763 = score(doc=2531,freq=2.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.2606825 = fieldWeight in 2531, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0546875 = fieldNorm(doc=2531)
0.25 = coord(1/4)
- Source
- Information processing and management. 40(2004) no.4, S.603-618
-
Egghe, L.: ¬The measures precision, recall, fallout and miss as a function of the number of retrieved documents and their mutual interrelations (2008)
0.01
0.0064585055 = product of:
0.025834022 = sum of:
0.025834022 = weight(_text_:management in 2067) [ClassicSimilarity], result of:
0.025834022 = score(doc=2067,freq=2.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.18620178 = fieldWeight in 2067, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0390625 = fieldNorm(doc=2067)
0.25 = coord(1/4)
- Source
- Information processing and management. 44(2008) no.2, S.856-876
-
Egghe, L.: Mathematical study of h-index sequences (2009)
0.01
0.0064585055 = product of:
0.025834022 = sum of:
0.025834022 = weight(_text_:management in 4217) [ClassicSimilarity], result of:
0.025834022 = score(doc=4217,freq=2.0), product of:
0.13874207 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.041162275 = queryNorm
0.18620178 = fieldWeight in 4217, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0390625 = fieldNorm(doc=4217)
0.25 = coord(1/4)
- Source
- Information processing and management. 45(2009) no.2, S.288-297
-
Egghe, L.; Guns, R.; Rousseau, R.; Leuven, K.U.: Erratum (2012)
0.00
0.0046474333 = product of:
0.018589733 = sum of:
0.018589733 = product of:
0.055769198 = sum of:
0.055769198 = weight(_text_:22 in 4992) [ClassicSimilarity], result of:
0.055769198 = score(doc=4992,freq=2.0), product of:
0.14414327 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.041162275 = 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)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Date
- 14. 2.2012 12:53:22
-
Egghe, L.; Rousseau, R.: Introduction to informetrics : quantitative methods in library, documentation and information science (1990)
0.00
0.0032827337 = product of:
0.013130935 = sum of:
0.013130935 = product of:
0.039392803 = sum of:
0.039392803 = weight(_text_:29 in 1515) [ClassicSimilarity], result of:
0.039392803 = score(doc=1515,freq=2.0), product of:
0.14479601 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.041162275 = queryNorm
0.27205724 = fieldWeight in 1515, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0546875 = fieldNorm(doc=1515)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Date
- 29. 2.2008 19:02:46
-
Egghe, L.: ¬A noninformetric analysis of the relationship between citation age and journal productivity (2001)
0.00
0.0028137718 = product of:
0.011255087 = sum of:
0.011255087 = product of:
0.03376526 = sum of:
0.03376526 = weight(_text_:29 in 5685) [ClassicSimilarity], result of:
0.03376526 = score(doc=5685,freq=2.0), product of:
0.14479601 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.041162275 = queryNorm
0.23319192 = fieldWeight in 5685, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.046875 = fieldNorm(doc=5685)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Date
- 29. 9.2001 13:59:34
-
Egghe, L.: Influence of adding or deleting items and sources on the h-index (2010)
0.00
0.0028137718 = product of:
0.011255087 = sum of:
0.011255087 = product of:
0.03376526 = sum of:
0.03376526 = weight(_text_:29 in 3336) [ClassicSimilarity], result of:
0.03376526 = score(doc=3336,freq=2.0), product of:
0.14479601 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.041162275 = queryNorm
0.23319192 = fieldWeight in 3336, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.046875 = fieldNorm(doc=3336)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Date
- 31. 5.2010 15:02:29
-
Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996)
0.00
0.0027884599 = product of:
0.0111538395 = sum of:
0.0111538395 = product of:
0.03346152 = sum of:
0.03346152 = weight(_text_:22 in 7659) [ClassicSimilarity], result of:
0.03346152 = score(doc=7659,freq=2.0), product of:
0.14414327 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.041162275 = 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)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Source
- Journal of information science. 22(1996) no.3, S.165-170
-
Egghe, L.: Properties of the n-overlap vector and n-overlap similarity theory (2006)
0.00
0.00234481 = product of:
0.00937924 = sum of:
0.00937924 = product of:
0.02813772 = sum of:
0.02813772 = weight(_text_:29 in 194) [ClassicSimilarity], result of:
0.02813772 = score(doc=194,freq=2.0), product of:
0.14479601 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.041162275 = queryNorm
0.19432661 = fieldWeight in 194, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0390625 = fieldNorm(doc=194)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Date
- 3. 1.2007 14:26:29
-
Egghe, L.: Untangling Herdan's law and Heaps' law : mathematical and informetric arguments (2007)
0.00
0.00234481 = product of:
0.00937924 = sum of:
0.00937924 = product of:
0.02813772 = sum of:
0.02813772 = weight(_text_:29 in 271) [ClassicSimilarity], result of:
0.02813772 = score(doc=271,freq=2.0), product of:
0.14479601 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.041162275 = queryNorm
0.19432661 = fieldWeight in 271, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0390625 = fieldNorm(doc=271)
0.33333334 = coord(1/3)
0.25 = coord(1/4)
- Date
- 29. 4.2007 19:51:08